Document:

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                                                                    Exhibit 4.11

                                 $1,147,000,000

                     MIDWEST GENERATION PASS THROUGH TRUSTS

                Pass Through Certificates, Series A and Series B

                          REGISTRATION RIGHTS AGREEMENT

                                                                 August 17, 2000

CREDIT SUISSE FIRST BOSTON CORPORATION
LEHMAN BROTHERS INC.
      as representatives of the several Purchasers

c/o Credit Suisse First Boston Corporation
     Eleven Madison Avenue
     New York, New York  10010-3629

c/o Lehman Brothers Inc.
     Three World Financial Center
     New York, NY  10285

Dear Sirs:

                  Edison Mission Energy, a California corporation ("EME"), and
its wholly-owned subsidiary Midwest Generation, LLC, a Delaware limited
liability company (the "COMPANY" and together with EME, the "REGISTRANTS"),
propose, subject to the terms and conditions stated in a purchase agreement
dated August 17, 2000 (the "PURCHASE AGREEMENT"), that United States Trust
Company of New York, acting not in its individual capacity but solely as trustee
(in its individual capacity as such trustee, the "PASS THROUGH TRUSTEE") under
each of the Pass Through Trust Agreements (the "PASS THROUGH TRUST AGREEMENTS")
dated as of August 17, 2000 among the Company and the Pass Through Trustee, will
issue and sell to Credit Suisse First Boston Corporation ("CSFB"), Lehman
Brothers Inc. ("LEHMAN"), Chase Securities Inc. ("CSI"), Salomon Smith Barney
Inc. ("SSB") and SG Cowen Securities Corp. ("COWEN" and together with CSFB,
Lehman, CSI and SSB, the several "PURCHASERS") Midwest Generation Pass Through
Certificates, Series A in the aggregate amount of $333,500,000 and Midwest
Generation Pass Through Certificates, Series B in the aggregate amount of
$813,500,000 (such Pass Through Certificates are herein referred to as the
"INITIAL SECURITIES"). Capitalized terms used herein but not defined herein
shall have the respective meanings specified in the Purchase Agreement whether
expressly set forth therein or by reference to another agreement.

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                  SECTION 1. DEFINITIONS. The definitions set forth in this
Agreement shall equally apply to both the singular and plural forms of the terms
defined. As used in this Agreement, the following terms shall have the following
meanings:

                  "ADVICE" shall have the meaning set forth in the last
paragraph of Section 5 of this Agreement.

                  "AFFILIATE", with respect to any Person, shall mean any other
Person that directly or indirectly through one or more intermediaries, controls,
is controlled by, or is under common control with such first Person. The term
"control" means the possession, directly or indirectly of the power to direct or
cause the direction of the management or policies of a Person, whether through
the ownership of voting securities or by contract or otherwise. For purposes of
Section 2, an "Affiliate" of the Company or EME shall mean and include, in
addition, any Person deemed an affiliate thereof under the Securities Act or the
Exchange Act in connection with the Exchange Offer.

                  "CLOSING DATE" shall have the meaning set forth in the
Purchase Agreement.

                  "COMMISSION" shall mean the United States Securities and
Exchange Commission.

                  "COMPANY" shall have the meaning set forth in the first
paragraph of this Agreement.

                  "CURE DATE" shall have the meaning set forth in Section 4(a)
of this Agreement.

                  "EFFECTIVE DATE" shall mean the date which is 270 days after
the Closing Date.

                  "EFFECTIVE PERIOD" shall have the meaning set forth in Section
3(a) of this Agreement.

                  "EME" shall have the meaning set forth in the first paragraph
of this Agreement.

                  "EXCHANGE ACT" shall mean the Securities Exchange Act of 1934,
as amended, and the rules and regulations of the Commission promulgated
thereunder.

                  "EXCHANGE OFFER" shall have the meaning set forth in Section
2(a) of this Agreement.

                  "EXCHANGE OFFER REGISTRATION STATEMENT" shall have the meaning
set forth in Section 2(a) of this Agreement.

                  "EXCHANGE PERIOD" shall have the meaning set forth in Section
2(a) of this Agreement.

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                  "EXCHANGE SECURITIES" shall have the meaning set forth in
Section 2(a) of this Agreement.

                  A "HOLDER" of Registrable Securities shall mean the registered
holder of such securities or any beneficial owner thereof.

                  "HOLDER INDEMNIFIED PARTY" shall have the meaning set forth in
Section 8(a) of this Agreement.

                  "HOLDER INFORMATION" shall have the meaning set forth in
Section 8(a) of this Agreement.

                  "ILLIQUIDITY EVENT" with respect to the Initial Securities
shall mean any of the following events:

                  (a) as of the Effective Date, both (i) an Exchange Offer
Registration Statement (which, if applicable pursuant to Section 2(a), covers
resales of such Exchange Securities) has not become effective and (ii) the
Registrable Securities are not the subject of an Initial Shelf Registration
Statement which has become effective; or

                  (b) the Exchange Securities offered in exchange for the
Registrable Securities are the subject of an Exchange Offer Registration
Statement which was effective (and which, if applicable pursuant to Section
2(a), covered resales of such Exchange Securities) but which ceased to be
effective for any reason prior to the end of the Exchange Period; or

                  (c) the Registrable Securities are the subject of an Initial
Shelf Registration Statement or Subsequent Shelf Registration Statement which
was effective but which has ceased to be effective for any reason prior to the
end of the Effective Period.

                  An Illiquidity Event shall be deemed to cease to exist on the
date subsequent to the occurrence of such Illiquidity Event on which:

                           (i) in the case of an Illiquidity Event described in
                  clause (a) above, either (i) an Exchange Offer Registration
                  Statement (which, if applicable pursuant to Section 2(a),
                  covers resales of the Exchange Securities exchanged for such
                  Registrable Securities) shall become effective and an Exchange
                  Offer for such Registrable Securities shall have commenced or
                  (ii) an Initial Shelf Registration Statement covering such
                  Registrable Securities shall become effective; or

                           (ii) in the case of an Illiquidity Event described in
                  clause (b) above, either (i) an Exchange Offer Registration
                  Statement (which, if applicable pursuant to Section 2(a)
                  covers resales of the Exchange Securities offered in exchange
                  for such Initial Securities) shall become effective and an
                  Exchange Offer for such Registrable Securities shall have
                  commenced pursuant to an Exchange Offer Registration Statement
                  or

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                           (ii) an Initial Shelf Registration Statement covering
                  such Registrable Securities shall become effective; or

                           (iii) in the case of an Illiquidity Event described
                  in clause (c) above, a Subsequent Shelf Registration Statement
                  covering such Registrable Securities shall become effective.

                   "INITIAL SECURITIES" shall have the meaning set forth in the
first paragraph of this Agreement.

                  "INITIAL SHELF REGISTRATION STATEMENT" shall have the meaning
set forth in Section 3(a) of this Agreement.

                  "INSPECTORS" shall have the meaning set forth in Section 5(m)
of this Agreement.

                  "MANAGING UNDERWRITERS" shall mean the investment banker or
investment bankers and manager or managers that shall administer an Underwritten
Offering.

                  "NASD" shall mean the National Association of Securities
Dealers, Inc.

                  "PASS THROUGH TRUST AGREEMENTS" shall have the meaning set
forth in the first paragraph of this Agreement.

                  "PASS THROUGH TRUSTEE" shall have the meaning set forth in the
first paragraph of this Agreement, including its successors and any successor
trustee under the Pass Through Trust Agreements.

                  "PROSPECTUS" shall mean the prospectus included in any
Registration Statement (including, without limitation, a prospectus that
discloses information previously omitted from a prospectus filed as part of an
effective registration statement in reliance upon Rule 430A promulgated under
the Securities Act), as amended or supplemented by any prospectus supplement,
and all other amendments and supplements to the prospectus included in any
Registration Statement, including post-effective amendments and all material
incorporated by reference into such prospectus.

                  "PURCHASE AGREEMENT" shall have the meaning set forth in the
first paragraph of this Agreement.

                  "PURCHASERS" shall have the meaning set forth in the first
paragraph of this Agreement.

                  "RECORDS" shall have the meaning set forth in Section 5(m) of
this Agreement.

                  "REGISTRABLE SECURITIES" shall mean the Initial Securities
upon original issuance thereof and at all times subsequent thereto until, in the
case of any such Initial Security, (i) a Registration Statement covering such
Initial Security, or the Exchange

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Security to be exchanged for such Initial Security (and, in the case of any
Resale Security, any resale thereof), has been declared effective and such
Initial Security has been disposed of or exchanged (or, in any case where such
Registration Statement covers the resale of Resale Securities, such Initial
Security has been exchanged and the Resale Security received therefor has been
resold), as the case may be, in accordance with such effective Registration
Statement, (ii) such Initial Security is sold in compliance with Rule 144 or
would be permitted to be sold pursuant to Rule 144(k), (iii) such Initial
Security shall have been otherwise transferred and a new certificate therefor
not bearing a legend restricting further transfer shall have been delivered by
or on behalf of the Registrants and such Initial Security shall be tradeable by
each holder thereof without restriction under the Securities Act or the Exchange
Act and without material restriction under the applicable blue sky or state
securities laws or (iv) such Initial Security ceases to be outstanding.

                  "REGISTRANTS" shall have the meaning set forth in the first
paragraph of this Agreement.

                  "REGISTRATION STATEMENT" shall mean any registration statement
(including any Shelf Registration Statement) of the Company or EME that covers
any of the Registrable Securities or the Exchange Securities, as the case may
be, pursuant to the provisions of this Agreement, including the Prospectus which
is part of such Registration Statement, amendments (including post-effective
amendments) and supplements to such Registration Statement and all exhibits and
appendices to any of the foregoing. For purposes of the foregoing, unless the
context requires otherwise, a Registration Statement for an Exchange Offer shall
not be deemed to cover Registrable Securities held by a Restricted Person unless
such Registration Statement covers the resale of Resale Securities to be
received by such Restricted Person pursuant to such Exchange Offer and any such
Initial Securities shall continue to be Registrable Securities.

                  "RESALE PURCHASER" shall have the meaning set forth in Section
8(a) of this Agreement.

                  "RESALE SECURITIES" shall mean any Exchange Security received
by a Restricted Person pursuant to an Exchange Offer, and at all times
subsequent thereto, until, subject to the time periods set forth herein, such
Exchange Security has been resold by such Restricted Person.

                  "RESTRICTED PERSON" shall mean (a) any Affiliate of the
Company or EME, (b) any Purchaser or (c) any Affiliate or any Purchaser (other
than Affiliates of such Purchaser that (i) is acquiring Exchange Securities in
the ordinary course of business and do not have an arrangement with any Person
to distribute Exchange Securities and (ii) may trade such Exchange Securities
without restriction under the Securities Act).

                  "RULE 144" shall mean Rule 144 under the Securities Act, as
such Rule may be amended from time to time, or any similar rule or regulation
hereafter adopted by the Commission.

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                  "RULE 144A" shall mean Rule 144A under the Securities Act, as
such Rule may be amended from time to time, or any similar rule or regulation
hereafter adopted by the Commission.

                  "RULE 415" shall mean Rule 415 under the Securities Act, as
such Rule may be amended from time to time, or any similar rule or regulation
hereafter adopted by the Commission.

                  "SECURITIES ACT" shall mean the Securities Act of 1933, as
amended, and the rules and regulations of the Commission promulgated thereunder.

                  "SHELF NOTICE" shall have the meaning set forth in Section
2(b) of this Agreement.

                  "SHELF REGISTRATION STATEMENT" shall have the meaning set
forth in Section 3(b) of this Agreement.

                  "SPECIAL COUNSEL" shall mean Milbank, Tweed, Hadley & McCloy
LLP, special counsel to the Purchasers, or any other firm acceptable to the
Registrants, acting as special counsel to the holders of Registrable Securities
or Exchange Securities.

                  "SUBSEQUENT SHELF REGISTRATION STATEMENT" shall have the
meaning set forth in Section 3(b) of this Agreement.

                  "TIA" shall mean the Trust Indenture Act of 1939, as amended,
and the rules and regulations of the Commission promulgated thereunder.

                   "UNDERWRITTEN REGISTRATION" or "UNDERWRITTEN OFFERING" shall
mean a registration in which securities are sold to an underwriter or group of
underwriters for reoffering to the public.

                  SECTION 2. EXCHANGE OFFER.

                  (a) Unless the Registrants determine in good faith that the
Exchange Offer shall not be permissible under applicable law or Commission
policy, the Registrants shall prepare and cause to be filed with the Commission
as soon as reasonably practicable after the Closing Date, subject to Sections
2(b) and 2(c) of this Agreement, a Registration Statement (an "EXCHANGE OFFER
REGISTRATION STATEMENT") for an offer to exchange (an "EXCHANGE OFFER") the
Registrable Securities (subject to Section 2(c)) for (x) an EME Guarantee which
is registered under the Securities Act and (y) a like aggregate principal amount
of pass-through certificates otherwise in all material respects substantially
identical to the Initial Securities (the "EXCHANGE SECURITIES") (and which, in
the case of the pass-through certificates, are entitled to the benefits of the
Pass Through Trust Agreements, which shall be qualified under the TIA in
connection with such registration, or agreements which are substantially
identical in all material respects to the Pass Through Trust Agreements), other
than (i) such changes to the Pass Through Trust Agreements or any substantially
identical agreements as the Pass Through Trustee and the Registrants may deem
necessary in connection with the Pass Through Trustee's

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rights and duties or to comply with any requirements of the Commission to effect
or maintain the qualification thereof under the TIA and (ii) such changes
relating to restrictions on transfer set forth in the Pass Through Trust
Agreements. The Exchange Offer shall be registered under the Securities Act on
the appropriate form of Registration Statement and shall comply with all
applicable tender offer rules and regulations under the Exchange Act and with
all other applicable laws. Subject to the terms and limitations of Section 2(c),
such Exchange Offer Registration Statement may also cover any resales of
Exchange Securities by any Restricted Person, in the manner or manners
designated by them which, in any event, is reasonably acceptable to the
Registrants.

                  The Registrants shall use their reasonable best efforts to (i)
cause the Exchange Offer Registration Statement to become effective under the
Securities Act on or prior to the Effective Date, (ii) keep the Exchange Offer
open for a period of not less than the shorter of (A) the period ending when the
last remaining Initial Security is tendered into the Exchange Offer and (B) 30
days from the date notice is mailed to the holders of the Initial Securities
(PROVIDED that in no event shall such period be less than the period required
under applicable Federal and state securities laws), and (iii) maintain such
Exchange Offer Registration Statement continuously effective for a period (the
"EXCHANGE PERIOD") of not less than the longer of (A) the period until the
consummation of the Exchange Offer and (B) 120 days after effectiveness of the
Exchange Offer Registration Statement; PROVIDED, HOWEVER, that in the event that
all resales of Exchange Securities (including, subject to the time periods set
forth herein, any Resale Securities and including, subject to the time periods
set forth herein, any resales by broker-dealers that receive Exchange Securities
for their own account pursuant to the Exchange Offer) covered by such Exchange
Offer Registration Statement have been made, the Exchange Offer Registration
Statement need not remain continuously effective for the period set forth in
clause (B) above. Upon consummation of the Exchange Offer, the Registrants shall
deliver to the Pass Through Trustee under the Pass Through Trust Agreements for
cancellation all Initial Securities tendered by the holders thereof pursuant to
the Exchange Offer and not withdrawn prior to the date of consummation of the
Exchange Offer. Each Restricted Person shall notify the Registrants promptly
after re-selling all Resale Securities held by such Restricted Person which are
covered by any such Registration Statement.

                  Each holder of Registrable Securities to be exchanged in the
Exchange Offer (other than any Restricted Person) shall be required as a
condition to participating in the Exchange Offer to represent that (i) it is not
an Affiliate of the Company or EME, (ii) any Exchange Securities to be received
by it shall be acquired in the ordinary course of its business and (iii) that at
the time of the consummation of the Exchange Offer it shall have no arrangement
with any person to participate in the distribution (within the meaning of the
Securities Act) of the Exchange Securities. Upon consummation of an Exchange
Offer in accordance with this Section 2 and compliance with the other provisions
of this Section 2, the Registrants shall, subject to Sections 2(b) and 2(c),
have no further obligation to register Registrable Securities pursuant to
Section 3(a) of this Agreement; PROVIDED that the other provisions of this
Agreement shall continue to apply as set forth in such provisions.

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                  (b) In the event that the Registrants reasonably determine in
good faith that (i) the Exchange Securities would not, upon receipt in the
Exchange Offer by any holder of Registrable Securities (other than any
Restricted Person and other than any holder who is not acquiring such Exchange
Securities in the ordinary course of business or who has an arrangement with any
person to participate in the distribution of such Exchange Securities), be
tradeable by each holder thereof without restriction under the Securities Act
and the Exchange Act and without restriction under applicable blue sky or state
securities laws, (ii) after conferring with counsel, the Commission is unlikely
to permit the Exchange Offer Registration Statement to become effective prior to
the Effective Date (except in the circumstances set forth in Section 2(c)) or
(iii) the Exchange Offer may not be made in compliance with applicable laws,
then the Registrants shall promptly deliver notice thereof (the "SHELF NOTICE")
to the holders of the Registrable Securities and the Pass Through Trustee and
shall thereafter file an Initial Shelf Registration Statement pursuant to, and
otherwise comply with, the provisions of Section 3(a). Following the delivery of
a Shelf Notice in accordance with this Section 2(b) and compliance with Section
3(a), the Registrants shall not have any further obligation under this Section
2.

                  (c) In the event that the Registrants reasonably determine in
good faith that (i) the Exchange Securities would not, upon consummation of any
resale thereof by a Restricted Person to any Person other than another
Restricted Person, be tradeable by each holder thereof without restriction under
the Securities Act (other than applicable requirements) and the Exchange Act and
without restriction under applicable blue sky or state securities laws or (ii)
the Commission is unlikely to permit the Exchange Offer Registration Statement
to become effective prior to the Effective Date solely because such Registration
Statement covers resales of the Exchange Securities by Restricted Persons, then
the Registrants shall promptly deliver a Shelf Notice to the Restricted Persons
who are holders of Registrable Securities and to the Pass Through Trustee, and
the Registrants shall thereafter file an Initial Shelf Registration Statement
with respect to any such Registrable Securities pursuant to, and otherwise
comply with, the provisions of Section 3(a); PROVIDED that such Initial Shelf
Registration Statement shall only cover resales of Registrable Securities by
Restricted Persons if a Shelf Notice is not then otherwise required to be
delivered pursuant to Section 2(b); and, PROVIDED, FURTHER, that such Initial
Shelf Registration Statement covering Registrable Securities held by Restricted
Persons shall be kept effective for at least a period of 120 days and is not
required to remain effective with respect to Registrable Securities held by
Restricted Persons thereafter. Following the delivery of a Shelf Notice in
accordance with this Section 2(c) and compliance with Section 3(a), the
Registrants shall not have any further obligation under this Section 2 with
respect to the filing of an offer to exchange the Registrable Securities held by
the Restricted Persons (including, without limitation, any obligation to provide
that an Exchange Offer Registration Statement filed pursuant to Section 2(a)
cover resales of Exchange Securities by Restricted Persons); PROVIDED that the
provisions of this Section 2 shall otherwise remain in full force and effect
with respect to Registrable Securities held by any person other than a
Restricted Person.

                  SECTION 3. SHELF REGISTRATION; REGISTRABLE SECURITIES. With
respect to the Registrable Securities, if a Shelf Notice is delivered in
accordance with Section 2(b)

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or 2(c) of this Agreement, then the Registrants shall comply with the following
provisions of this Section 3:

                  (a) INITIAL SHELF REGISTRATION. The Registrants shall prepare
and cause to be filed with the Commission a Registration Statement for an
offering to be made on a continuous basis other than pursuant to an Underwritten
Offer pursuant to Rule 415 covering all of the Registrable Securities (or, if a
Shelf Notice is delivered solely pursuant to Section 2(c), all of the
Registrable Securities held by any Restricted Persons) (the "INITIAL SHELF
REGISTRATION STATEMENT"); PROVIDED, HOWEVER, that no holder shall be entitled to
have its Registrable Securities covered by such Initial Shelf Registration
Statement unless such holder agrees in writing, within 10 Business Days after
actual receipt of a request therefrom, to be bound by all the provisions of this
Agreement applicable to such holder. No holder shall be entitled to the benefits
of Section 4 of this Agreement unless and until such holder shall have provided
all information reasonably requested by the Registrants (after conferring with
counsel), and such holder shall not be entitled to such benefits with respect to
any period during which such information was not provided. Each holder to which
any Shelf Registration Statement is being effected agrees to furnish promptly to
the Registrants all information required to be disclosed in order to make the
information previously furnished to the Registrants by such holder not
materially misleading. The Initial Shelf Registration Statement shall be an
appropriate form permitting registration of such Registrable Securities for such
resale by the holders thereof in the manner or manners reasonably designated by
them (but excluding any Underwritten Offerings). The Registrants shall use their
reasonable best efforts to (A) cause the Initial Shelf Registration Statement to
be declared effective under the Securities Act on or prior to the Effective Date
and (B) keep the Initial Shelf Registration Statement continuously effective
under the Securities Act for a period of two years after the Closing Date
(subject to extension pursuant to the last paragraph of Section 5 and subject,
with respect to Registrable Securities held by Restricted Persons, to the
limitations set forth in Section 2(c)) (such two-year period, as it may be
extended, being the "EFFECTIVE PERIOD"), or such shorter period ending when (1)
all Registrable Securities covered by the Initial Shelf Registration Statement
have been sold or (2) a Subsequent Shelf Registration Statement covering all of
such Registrable Securities remaining unsold has been declared effective under
the Securities Act or (3) all Registrable Securities may be sold pursuant to
subsection (k) of Rule 144.

                  Notwithstanding any other provision hereof, the Registrants
may postpone or suspend the filing or the effectiveness of a Registration
Statement (or any amendments or supplements thereto), if (1) such action is
required by applicable law, or (2) such action is taken by the Registrants in
good faith and for valid business reasons (not including avoidance of such
party's obligations hereunder), including the acquisition or divestiture of
assets, other pending corporate developments, public filings with the Commission
or other similar events, so long as the Registrants promptly thereafter comply
with the requirements of Section 5(b) hereof, if applicable. Notwithstanding the
occurrence of any event referred to in the immediately preceding sentence (a
"SUSPENSION"), such event shall not suspend, postpone or in any other manner
affect the running of the time period after which an Illiquidity Event shall be
deemed to occur and, if the filing or effectiveness of a Registration Statement
is postponed or suspended

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as a result of a Suspension, an Illiquidity Event shall nonetheless exist if all
other requirements set forth for the occurrence of an Illiquidity Event shall be
satisfied, and the provisions of Section 4 requiring the accrual payment of
additional interest, as set forth in such Section, on the Registrable
Securities, shall be applicable.

                  (b) SUBSEQUENT SHELF REGISTRATIONS. If the Initial Shelf
Registration Statement or any Subsequent Shelf Registration Statement ceases to
be effective for any reason at any time during the Effective Period after the
Effective Date, the Registrants may attempt to obtain the withdrawal of any
order suspending the effectiveness thereof, and may amend such Initial Shelf
Registration Statement or Subsequent Shelf Registration Statement in a manner
reasonably expected to obtain the withdrawal of the order suspending the
effectiveness thereof, or file an additional "shelf" Registration Statement
applicable to the Initial Securities pursuant to Rule 415 covering all of such
Registrable Securities remaining unsold (a "SUBSEQUENT SHELF REGISTRATION
Statement"). If a Subsequent Shelf Registration Statement is declared effective,
the Registrants shall use their reasonable best efforts to keep such Shelf
Registration Statement continuously effective for a period after the date of
such effectiveness equal in length to the length of the Effective Period plus
the aggregate number of days from the date of the order suspending the
effectiveness of the Initial Shelf Registration Statement or any Subsequent
Shelf Registration Statement. As used herein, the term "Shelf Registration
Statement" means the Initial Shelf Registration Statement and any Subsequent
Shelf Registration Statement.

                  SECTION 4.  ADDITIONAL INTEREST FOR ILLIQUIDITY.

                  (a) The Registrants acknowledge and agree that the Purchasers
(and any subsequent holders of the Initial Securities) have acquired the Initial
Securities in reliance on the covenant of the Registrants to use their
reasonable best efforts to (i) cause to become effective on or prior to the
Effective Date (A) the Exchange Offer Registration Statement or (B) an Initial
Shelf Registration Statement, and (ii) maintain the respective effectiveness of
such Registration Statements as described herein. The Registrants further
acknowledge and agree that the failure of the Registrants to fulfill such
covenants will have an adverse effect on the holders of the Initial Securities.
Therefore, the Registrants agree that from and after the date on which any
Illiquidity Event occurs, additional interest (in addition to the interest
otherwise payable with respect to the Registrable Securities) shall accrue with
respect to the Initial Securities until but not including the date on which such
Illiquidity Event shall cease to exist (and provided no other Illiquidity Event
with respect to any Initial Securities shall then be continuing), at the rate of
one half of one percent (0.50%) per annum, which additional interest shall be
payable to the holders of all Initial Securities at the times, in the manner and
subject to the same terms and conditions set forth in the Pass Through Trust
Agreements, as nearly as may be, as though the interest rates provided in such
Initial Securities had been increased by one half of one percent (0.50%) per
annum. Subject to the provisions of this Section 4, the Registrants agree that
the holders of all Initial Securities shall be entitled to the payment of any
and all additional interest on the Initial Securities that shall accrue pursuant
to this Section 4.

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                  Any such additional interest accrued on any such Initial
Securities but unpaid on the date on which such interest ceases to accrue (the
"CURE DATE") shall be due and payable on the first interest payment date
following the next record date following such Cure Date (or the record date
occurring on such Cure Day, if such Cure Date is a record date) to the holders
of record of such Initial Securities on such record date.

                  (b) The Registrants shall promptly notify the holders of the
Initial Securities and the Pass Through Trustee of the occurrence of any
Illiquidity Event of which they have knowledge.

                  Notwithstanding the foregoing, no holder shall be entitled to
receive the additional interest described in clause (a) of this Section 4 with
respect to the Registrable Securities held by such holder if the applicable
Illiquidity Event arises by reason of the failure of such holder to provide such
information as (i) the Registrants may reasonably request, with reasonable prior
written notice, for use in the Shelf Registration Statement or any Prospectus
included therein to the extent the Registrants reasonably determine that such
information is required to be included therein by applicable law, (ii) the NASD
or the Commission may request in connection with such Shelf Registration
Statement, or (iii) is required to comply with the agreements of such holder
contained in clause (a) of Section 3 to the extent compliance thereof is
necessary for the Shelf Registration Statement to be declared effective.

                  SECTION 5. REGISTRATION PROCEDURES. In connection with the
registration of any Registrable Securities or Exchange Securities pursuant to
Sections 2 and 3 hereof, the Registrants shall use their reasonable best efforts
to effect such registration to permit the sale of such Registrable Securities or
Exchange Securities in accordance with any permitted intended method or methods
of disposition thereof, and pursuant thereto the Registrants shall:

                  (a) prepare and cause to be filed with the Commission a
Registration Statement or Registration Statements as prescribed by Sections 2
and 3 of this Agreement, and use their reasonable best efforts to cause each
such Registration Statement to become effective and remain effective for the
applicable period as provided herein; PROVIDED, HOWEVER, that (i) during the
period in which the Initial Registration Statement is open for the Restricted
Persons, the Registrants shall afford any Restricted Person which is a holder of
Registrable Securities or Exchange Securities and the Special Counsel, upon such
holder's written request to the Registrants, an opportunity to review copies of
all such documents proposed to be filed, and (ii) if such filing is pursuant to
Section 3, before filing any Registration Statement or Prospectus or any
amendments or supplements thereto (including documents that would be
incorporated therein by reference after the initial filing of the Registration
Statement), the Registrants shall afford the Special Counsel for all holders of
the Registrable Securities covered by such Registration Statement an opportunity
to review copies of all such documents proposed to be filed;

                  (b) prepare and cause to be filed with the Commission such
amendments and post-effective amendments to each Shelf Registration Statement as
may

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be necessary to keep such Registration Statement continuously effective for
the applicable period as provided herein; cause the related Prospectus to be
supplemented by any required Prospectus supplement, and as so supplemented to be
filed pursuant to Rule 424 (or any similar provisions then in force) under the
Securities Act; and comply with the provisions of the Securities Act, the
Exchange Act and the rules and regulations of the Commission promulgated
thereunder with respect to the disposition of all securities covered by such
Registration Statement as so amended or in such Prospectus as so supplemented in
accordance with the intended methods of disposition by the sellers of
Registrable Securities covered thereby set forth therein;

                  (c) if a Shelf Registration Statement is filed pursuant to
Section 3 hereof, notify the selling holders of Registrable Securities promptly
after the Registrants become aware thereof, and confirm such notice in writing,
(i) where a Prospectus or any prospectus supplement or post-effective amendment
has been filed, and, with respect to a Registration Statement or any
post-effective amendment, when the same has become effective, (ii) of any
request by the Commission for amendments or supplements to the Registration
Statement or the Prospectus or for additional information, (iii) of the issuance
by the Commission of any stop order suspending the effectiveness of a
Registration Statement or of any order preventing or suspending the use of any
preliminary prospectus or Prospectus or the initiation of any proceedings for
that purpose, (iv) of the receipt by the Registrants of any notification with
respect to the suspension of the qualification or exemption from qualification
of a Registration Statement or any of the Registrable Securities for offer or
sale in any jurisdiction, or the initiation of any proceeding for such purpose,
(v) of the existence of any fact known to the Registrants which results in such
Registration Statement or related Prospectus or any document incorporated
therein by reference containing any untrue statement of a material fact or
omitting to state any material fact required to be stated therein or necessary
to make the statements therein, in light of the circumstances under which they
were made, not misleading (which notice may be accompanied by an instruction
that such notice constitutes material non-public information and to suspend the
use of the prospectus until the requisite changes have been made, and which
instruction shall require that such holders shall not communicate such material
non-public information to any third party and shall not sell or purchase, or
offer to sell or purchase, any securities of the Registrants after receipt of
such notice) and (vi) if the Registrants reasonably determine that the filing of
a post-effective amendment to such Registration Statement would be appropriate;

                  (d) if a Shelf Registration Statement is filed pursuant to
Section 3, use their reasonable efforts to prevent the issuance of any order
suspending the effectiveness of a Registration Statement or of any order
preventing or suspending the use of a Prospectus or suspending the qualification
(or exemption from qualification) of any of the Registrable Securities for sale
in any jurisdiction and, if any such order is issued, to obtain the withdrawal
of any such order at the earliest possible moment;

                  (e) if a Shelf Registration Statement is filed pursuant to
Section 3, furnish to each selling holder of Registrable Securities who so
requests (at such holder's address set forth in the Securities Register) without
charge, one conformed copy of the Registration Statement or Registration
Statements and each post-effective amendment

                                       12
<PAGE>

thereto, including financial statements and schedules, all documents
incorporated therein by reference and all exhibits (including those incorporated
by reference);

                  (f) if a Shelf Registration Statement is filed pursuant to
Section 3, deliver to each selling holder of Registrable Securities without
charge, as many copies of the Prospectus (including each preliminary prospectus)
and each amendment or supplement thereto as such persons may reasonably request,
and subject to the last paragraph of this Section 5, the Registrants hereby
consent to the use of such Prospectus and each amendment or supplement thereto
by each of the selling holders of Registrable Securities and the underwriters,
if any, in connection with the offering and sale of Registrable Securities
covered by such Prospectus and any amendment or supplement thereto;

                  (g) prior to any public offering of Registrable Securities,
register or qualify, or cooperate with the selling holders of Registrable
Securities, the underwriters, if any, and their respective counsel in connection
with the registration or qualification (or exemption from such registration or
qualification) of such Registrable Securities for offer and sale under the
securities or blue sky laws of such jurisdictions within the United States as
the selling holders reasonably request in writing (PROVIDED that if Registrable
Securities are offered other than through an Underwritten Offering, the
Registrants agree to cause their counsel to perform blue sky investigations and
file registrations and qualifications required to be filed pursuant to this
Section 5(g)); keep each such registration or qualification (or exemption
therefrom) effective during the period such Registration Statement is required
to be kept effective; and do any and all other acts or things necessary or
advisable to enable the disposition in such jurisdiction of the Registrable
Securities covered by the applicable Registration Statement; PROVIDED, HOWEVER,
that neither Registrant will be required to qualify as a foreign corporation or
limited liability company, or to do business, to file a general consent or take
any action which would subject it to service of process in any jurisdiction or
take any action which would subject itself to taxation in any such jurisdiction;

                  (h) if a Shelf Registration Statement is filed pursuant to
Section 3, cooperate with the Pass Through Trustee and the selling holders of
Registrable Securities to facilitate the timely preparation and delivery of
certificates representing Registrable Securities to be sold, which certificates
shall not bear any restrictive legends and shall be in a form eligible for
deposit with The Depository Trust Company, and enable such Registrable
Securities to be in such authorized denominations and Registered in such names
as the holders may reasonably request at least three Business Days prior to any
such sale;

                  (i) if a Shelf Registration Statement is filed pursuant to
Section 3, upon the occurrence of any event contemplated by Section 5(c),
prepare a supplement or post-effective amendment to the Registration Statement
or a supplement to the related Prospectus or any document incorporated therein
by reference or file any other required document so that, as thereafter
delivered to the purchasers of the Registrable Securities, such Prospectus will
not contain an untrue statement of a material fact or omit to state a material
fact necessary to make the statements therein, in light of the circumstances
under

                                       13
<PAGE>

which they were made, not misleading. If the Registrants so notify the holders
to suspend the use of the Prospectus after the occurrence of such an event, the
holders shall suspend use of the Prospectus, and not communicate such material
non-public information to any third party, and not sell or purchase, or offer to
sell or purchase, any securities of the Registrants, until the Registrants have
amended or supplemented the Prospectus to correct such misstatement or omission;

                  (j) use their reasonable best efforts to cause the Registrable
Securities covered by the Registration Statement to continue to be rated by the
rating agencies that initially rated the Initial Securities during the period
that the Registration Statement is required hereunder to remain effective (it
being acknowledged, however, that the foregoing shall not be deemed to require
the Registrants to maintain the rating of such Registrable Securities at the
rating given the Initial Securities);

                  (k) prior to the effective date of the first Registration
Statement relating to the Registrable Securities or the Exchange Securities, as
the case may be, (i) provide the Pass Through Trustee with printed certificates
for such securities in definitive form or in a global form eligible for deposit
with The Depository Trust Company and (ii) provide a CUSIP number for such
Registrable Securities or Exchange Securities represented by such certificates;

                  (l) if a Shelf Registration Statement is filed pursuant to
Section 3, enter into such reasonably required agreements and take all other
appropriate actions in order to expedite or facilitate the registration or the
disposition of such Registrable Securities;

                  (m) in the event of any Underwritten Offering (which shall
only be undertaken at the option of the Registrants), if a Shelf Registration
Statement is filed pursuant to Section 3, make available prior to the filing
thereof for inspection by a representative of the holders of a majority in
aggregate principal amount of the Registrable Securities being sold, and the
Special Counsel, on the one hand, or underwriter on the other hand
(collectively, the "INSPECTORS"), during reasonable business hours, all
financial and other records, pertinent corporate documents and properties of the
Registrants (collectively, the "RECORDS"), and cause the officers, directors and
employees of the Registrants to supply all relevant information as shall be
reasonably necessary to enable them to exercise any applicable due diligence
responsibilities; PROVIDED, HOWEVER, that as a condition to supplying such
information, the Registrants shall receive an agreement in writing from the
Special Counsel agreeing that any information that is designated in writing by
the Registrants, in good faith, as confidential at the time of delivery of such
information shall be kept confidential by such inspector (other than as to
holders of Registrable Securities) and by any holders of Registrable Securities
receiving such information, unless (i) disclosure of such information is
required pursuant to applicable law or by court or administrative order, (ii)
disclosure of such information is, in the reasonable opinion of counsel to the
Registrants, necessary to avoid or correct a misstatement or omission of a
material fact in the Registration Statement, Prospectus or any supplement or
post-effective amendment thereto or disclosure is otherwise required by law,
(iii) such information becomes generally available to the public other than as a

                                       14
<PAGE>

result of a disclosure by any inspector or any such holder of Registrable
Securities in violation of this Section 5(m) or (iv) such information is
approved for release by the Registrants, in writing;

                  (n) use their best efforts to cause the Pass Through Trust
Agreements or the trust indenture provided for in Section 2, as the case may be,
to be qualified under the TIA not later than the effective date of such
Registration Statement; and, in connection therewith, cooperate with the Pass
Through Trustee under the Pass Through Trust Agreements and the holders of the
Registrable Securities to effect such changes to the Pass Through Trust
Agreements as may be required for the Pass Through Trust Agreements to be so
qualified in accordance with the terms of the TIA and execute, and use their
best efforts to cause such Pass Through Trustee to execute, all documents as may
be required to effect such changes, and all other forms and documents required
to be filed with the Commission to enable the Pass Through Trust Agreements or
the trust indenture provided for in Section 2 to be so qualified in a timely
manner;

                  (o) otherwise use their reasonable best efforts to comply with
all applicable rules and regulations of the Commission.

                  For purposes of the covenants set forth in this Section 5,
references to a Shelf Registration Statement, including a Shelf Registration
Statement filed pursuant to Section 3, shall be deemed to include any
Registration Statement, filed pursuant to Section 2, which covers, for the
period set forth therein, resales of Exchange Securities held by Restricted
Persons as provided in Section 2, and, in connection with such Restricted
Persons shall be entitled to exercise all rights, receive all notices and copies
of documents, and otherwise receive all benefits afforded to sellers or holders
of Registrable Securities under this Section 5 in connection with a Shelf
Registration Statement. Without limiting the generality of the foregoing, the
Registrants agree to fulfill their obligations set forth in Sections 5(a), (b),
(c), (d), (e), (f), (h), (j), (l) and (m) with respect to any such Registration
Statement filed pursuant to Section 2 insofar as it covers such resales.

                  The Registrants may require each seller of Registrable
Securities as to which any registration is being effected, as a condition
thereto, to furnish to the Registrants such information regarding the holder and
the distribution of such Registrable Securities as the Registrants may, from
time to time, request in writing, including without limitation stating that (i)
it is not an Affiliate of either Registrant, (ii) the amount of Registrable
Securities held by such holder prior to the Exchange Officer, (iii) the amount
of Registrable Securities owned by such holder to be exchanged in the Exchange
Offer and representing that such holder is not engaged in, and does not intend
to engage in, and has no arrangement or understanding with any Person to
participate in, a distribution of the Exchange Securities to be issued, and (iv)
it is acquiring the Exchange Securities in its ordinary course of business and
to covenant and agree to promptly notify the Registrants if any such information
so provided by such seller ceases to be true and correct and will promptly
thereafter furnish the Registrants with corrected information. The Registrants
may exclude from such registration the Registrable Securities of any

                                       15
<PAGE>

Person who fails to furnish such information within a reasonable time after
receiving such request.

                  Each holder of Registrable Securities agrees by acquisition of
such Registrable Securities that, upon receipt of any notice from the
Registrants of the happening of any event of the kind described in Section
5(c)(ii), 5(c)(iii), 5(c)(v) or 5(c)(vi) hereof, such holder shall forthwith
discontinue disposition of such Registrable Securities covered by such
Registration Statement or Prospectus until such holder is advised in writing
(the "ADVICE") by the Registrants that the use of the applicable Prospectus may
be resumed, and has received copies of any amendments or supplements thereto
and, if so directed by the Registrants, such holder will deliver to the
Registrants (at such holder's expense) all copies in its possession, other than
permanent file copies then in such holder's possession, of the prospectus
covering such Registrable Securities current at the time of receipt of such
notice, or certify in writing as to the destruction thereof. In the event the
Registrants shall give any such notice, the length of the Effective Period shall
be extended by the number of days during such period from and including the date
of the giving of such notice to and including the date when each seller of
Registrable Securities covered by such Registration Statement shall have
received (x) the copies of the supplemented or amended Prospectus contemplated
by Section 5(i) or (y) the Advice.

                  SECTION 6. DELIVERY OF PROSPECTUS; NOTIFICATION UPON RESALE.
The Purchasers acknowledge that it is the position of the staff of the
Commission that any broker-dealer that receives Exchange Securities for its own
account in exchange for Registrable Securities pursuant to the Exchange Offer
must deliver a prospectus in connection with any resale of such Resale
Securities. By so acknowledging, such Purchasers shall not be deemed to admit
that, by delivering a prospectus, it is an underwriter within the meaning of the
Securities Act.

                  Each Purchaser shall notify the Registrants promptly upon the
completion of the resale of the Resale Securities received by such Purchaser
pursuant to the Exchange Offer.

                  SECTION 7. REGISTRATION EXPENSES. EME shall bear all expenses
incurred in connection with the performance of the Registrants' obligations
under Sections 2, 3 and 4; PROVIDED, HOWEVER, that EME shall bear or reimburse
the holders for the reasonable fees and disbursements of only one counsel, the
Special Counsel, in accordance with the terms of the Purchase Agreement;
PROVIDED FURTHER, HOWEVER, that if the Registrants opt for an Underwritten
Offering, the Registrants shall not be responsible for any fees and expenses of
any Underwritten Offering, the Registrants shall not be responsible for any fees
and expenses of any underwriter, including any underwriting discounts and
commissions or any legal fees and expenses of counsel to the underwriters
(except for the reasonable fees and disbursements of counsel in connection with
state securities or blue sky qualification of any of the Registrable Securities
or the Exchange Securities).

                                       16
<PAGE>

                  SECTION 8. INDEMNIFICATION AND CONTRIBUTION.

                  (a) EME agrees to (A) indemnify and hold harmless each holder
of Registrable Securities (including any Purchaser which holds Registrable
Securities, including Resale Securities, for its own account (each, a "RESALE
PURCHASER")) and each Person, if any, who controls any such Person within the
meaning of either the Securities Act or the Exchange Act and each director,
officer, employee or agent of each such Person (each, a "HOLDER INDEMNIFIED
PARTY") against any and all losses, claims, damages or liabilities, joint or
several, to which they or any of them are subject under the Securities Act, the
Exchange Act or otherwise, insofar as such losses, claims, damages or
liabilities (or actions in respect thereof) arise out of or are based upon any
untrue statement or alleged untrue statement of any material fact contained in
any Registration Statement covering Registrable Securities held by such person
or any Prospectus relating to any such Registration Statement, or any amendment
thereof or supplement thereto and all documents incorporated by reference
therein, or arise out of or are based upon the omission or alleged omission to
state therein a material fact necessary in order to make the statements therein,
in light of the circumstances in which they were made, not misleading, and (B)
reimburse each such Holder Indemnified Party for any legal or other expenses
reasonably incurred by them in connection with investigating or defending any
such loss, claim, damage, liability or action as such expenses are incurred;
PROVIDED, HOWEVER, that EME will not be liable in any such case to the extent
that any such loss, claim, damage or liability arises out of or is based upon
any such untrue statement or alleged untrue statement or omission or alleged
omission made in such Registration Statement or Prospectus, or in any amendment
thereof or supplement thereto, in reliance upon and in conformity with written
information relating to such holder provided by such holder to the Registrants
specifically for use therein (collectively, the "HOLDER INFORMATION"); PROVIDED
FURTHER, HOWEVER, that the indemnity obligations arising out of this Section 8
with respect to any untrue statement or alleged untrue statement or omission or
alleged omission made in any preliminary Prospectus shall not inure to the
benefit of any holder or any controlling Person of such holder, to the extent
that a prospectus relating to such Registrable Securities or the Exchange
Securities, as the case may be, was required to be delivered by such holder
under the Securities Act in connection with such sale and any such loss, claim,
damage or liability of such holder results from the fact that such holder failed
to send or deliver to the Person asserting any such losses a copy of the final
Prospectus with or prior to the delivery of the written confirmation of the sale
of the Registrable Securities or the Exchange Securities, as the case may be,
and such final Prospectus would have cured the untrue statement or omission
giving rise to such losses if the Registrants had previously furnished copies
thereof to such holder. This indemnity agreement will be in addition to any
liability which the Registrants may otherwise have.

                  (b) As a condition to the inclusion of a holder's Registrable
Securities in a Registration Statement, such holder shall agree to (i) indemnify
and hold harmless the Registrants and each person who controls either Registrant
within the meaning of either the Securities Act or the Exchange Act, and each
director, officer, employee or agent of each such person, against any and all
losses, claims, damages or liabilities, joint or several, to which they or any
of them are subject under the Securities Act, the

                                       17
<PAGE>

Exchange Act or otherwise, insofar as such losses, claims, damages or
liabilities (or actions in respect thereof) arise out of or are based upon any
untrue statement or alleged untrue statement of any material fact contained in a
Registration Statement covering Registrable Securities held by such holder or
any Prospectus relating to any such Registration Statement or in any amendment
thereof or supplement thereto, or arise out of or are based upon the omission or
alleged omission to state therein a material fact necessary in order to make the
statements therein, in light of the circumstances in which they were made, not
misleading and (ii) reimburse each such indemnified party for any legal or other
expenses reasonably incurred by them in connection with investigating or
defending any such loss, claim, damage, liability or action as such expenses are
incurred; in each and every case under clause (i) and (ii) above to the extent,
but only to the extent, that such untrue statement or alleged untrue statement
or omission or alleged omission was made in such Registration Statement or
Prospectus or in any amendment thereof or supplement thereto, in reliance upon
and in conformity with the Holder Information. This indemnity agreement will be
in addition to any liability which any such holder may otherwise have. In no
event shall the liability of any selling holder of Registrable Securities
hereunder be greater in amount than the dollar amount of the proceeds (net of
payment of all expenses) received by such holder upon the sale (or, in the case
of Resale Securities, the resale) of the Registrable Securities giving rise to
such indemnification obligation.

                  (c) Promptly after receipt by an indemnified party under this
Section 8 of notice of the commencement of any action, such indemnified party
will, if a claim in respect thereof is to be made against the indemnifying party
under this Section 8, notify the indemnifying party in writing of the
commencement thereof (enclosing a copy of all papers served); but the omission
to so notify the indemnifying party (i) shall not relieve it from liability
under paragraph (a) or (b) above unless and to the extent it did not otherwise
learn of such action and such omission results in the forfeiture by the
indemnifying party or material impairment of substantial rights and defenses and
(ii) shall not, in any event, relieve the indemnifying party from any
obligations to any indemnified party other than the indemnification obligations
provided in paragraph (a) or (b) above. In case any such action is brought
against any indemnified party, and it notifies the indemnifying party of the
commencement thereof, the indemnifying party shall be entitled to participate
therein and, to the extent that it may wish, jointly with any other indemnifying
party similarly notified, to assume the defense thereof, with counsel reasonably
satisfactory to such indemnified party. After notice from the indemnifying party
to such indemnified party of its election to so assume the defense of such claim
or action, the indemnifying party will not be liable to such indemnified party
under this Section 8 for any legal or other expenses subsequently incurred by
such indemnified party in connection with the defense thereof other than costs
of investigation; provided that if (i) the defendants in any such action include
both the indemnified party and the indemnifying party, and the indemnified party
shall have received an opinion of counsel reasonably acceptable to the
indemnifying party that representation of both parties by the same counsel would
be inappropriate due to actual or likely conflicts of interest between them, or
(ii) the indemnifying party shall not have employed counsel for the indemnified
party to represent the indemnified party within a reasonable time after notice
of the institution of such action, then the indemnified party or parties shall
have the right to

                                       18
<PAGE>

select one firm of separate counsel (in addition to the fees and expenses of
local counsel) to assert any separate legal defenses and to otherwise defend
such action on behalf of such indemnified party or parties. No indemnifying
party shall be liable for any settlement of any action or claim for monetary
damages which an indemnified party may effect without the written consent of the
indemnifying party, which consent shall not be unreasonably withheld.

                  (d) If the indemnification provided for in Section 8(a) or (b)
hereof is for any reason, other than as specified in such provisions,
unavailable to or insufficient to hold harmless an indemnified party, then such
indemnifying party shall contribute to the aggregate losses, claims, damages or
liabilities (or actions in respect thereof) referred to in Section 8(a) or (b)
hereof in such proportion as is appropriate to reflect the relative fault and
benefits to the Registrants on the one hand and such holders on the other hand
in connection with the statements or omissions which resulted in such losses,
claims, damages or liabilities (or actions in respect thereof) as well as any
other relevant equitable considerations. The relative fault of the Registrants
and such holders shall be determined by reference to, among other things, the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent any untrue statement or omission. The obligations of the
holders in this Section 8(d) are several in proportion to their respective
obligations hereunder and not joint. Notwithstanding the provisions of this
Section 8(d), in no event shall any holder of Registrable Securities be required
to contribute any amount which is in excess of (i) the aggregate principal
amount of Initial Securities sold or exchanged by such holder less (ii) the
amount of any damages that such person has otherwise been required to pay be
reason of such alleged untrue statement or omission. No person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the
Securities Act) shall be entitled to contribution from any person who was not
guilty of such fraudulent misrepresentation. For purposes of this Section 8,
each Holder Indemnified Party shall have the same rights to contribution as a
holder, and each person who controls either Registrant within the meaning of
either the Securities Act or the Exchange Act and each officer, director,
employee and agent of such person, shall have the same rights to contribution as
the Registrants, subject in each case to the applicable terms and conditions of
this Section 8(d). Any party entitled to contribution will, promptly after
receipt of notice of commencement of any action, suit or proceeding against such
party in respect of which a claim for contribution may be made against another
party or parties under this Section 8(d), notify such party or parties from whom
contribution may be sought; but the omission to so notify such party or parties
(x) shall not relieve the party or parties from whom contribution may be sought
from any liability under this paragraph (d) unless and to the extent it did not
otherwise learn of such action and such omission results in the forfeiture by
the party or parties from whom contribution may be sought or material impairment
of substantial rights and defenses and (y) shall not, in any event, relieve such
party or parties from any obligations other than under this Section 8(d).

                  (e) The provisions of this Section 8 will remain in full force
and effect, regardless of any investigation made by or on behalf of any holder
of Registrable Securities, the Purchasers, the Registrants or any of the
officers, directors or controlling

                                       19
<PAGE>

persons referred to in this Section 8 and will survive the sale (or, in the case
of Resale Securities, the resale) by a holder of Registrable Securities of such
Registrable Securities.

                  SECTION 9. UNDERWRITTEN REGISTRATIONS (IF ANY). No holder may
participate in any Underwritten Registration, which Underwritten Registration
shall only be undertaken at the option of the Registrants, unless such holder
(a) agrees to sell such holder's Initial Securities on the basis provided in any
underwriting arrangements approved by the persons entitled hereunder to approve
such arrangements and (b) completes and executes all questionnaires, powers of
attorney, indemnities, underwriting agreements and other documents required
under the terms of such underwriting arrangements.

                  SECTION 10. TERMINATION. In the event that no Initial
Securities are sold to the Purchasers pursuant to the Purchase Agreement, this
Agreement shall automatically terminate, without liability on the part of any
party. Upon the fulfillment of all obligations on the part of the Registrants to
register the Initial Securities as set forth herein (including maintaining the
effectiveness of any applicable Registration Statements), this Agreement shall
terminate; PROVIDED that the provisions of Sections 7 and 8 hereof shall survive
any termination and remain in full force and effect.

                  SECTION 11. MISCELLANEOUS.

                  (a) NO INCONSISTENT AGREEMENTS. The Registrants neither have,
as of the date hereof, entered into, nor shall, on or after the date hereof,
enter into, any agreement with respect to its securities that is inconsistent
with the rights granted to the holders of Registrable Securities herein or
otherwise conflicts with the provisions hereof.

                  (b) AMENDMENTS AND WAIVERS. The provisions of this Agreement,
including the provisions of this sentence, may not be amended, modified or
supplemented, and waivers or consents to departures from the provisions hereof
may not be given, unless the Registrants have obtained the written consent of
holders of at least a majority of the then outstanding aggregate principal
amount of the Registrable Securities (or, after the consummation of any Exchange
Offer in accordance with Section 2, of Exchange Securities); PROVIDED that with
respect to any matter that directly or indirectly affects the rights of any
Restricted Person hereunder occurring within the period in which the Initial
Registration Statement is open for the Restricted Persons, the Registrants shall
obtain the written consent of each such Restricted Person against which such
amendment, modification, supplement, waiver or consent is to be effective.
Notwithstanding the foregoing (except for the foregoing proviso), a waiver or
consent to departure from the provisions hereof with respect to a matter that
relates exclusively to the rights of holders of Registrable Securities whose
securities are being sold or exchanged pursuant to a Registration Statement and
that does not directly or indirectly affect the rights of other holders of
Registrable Securities may be given by holders of at least a majority in
aggregate principal amount of the Registrable Securities being sold or exchanged
by such holders pursuant to such Registration Statement; PROVIDED, HOWEVER, that
the provisions of this sentence may not be amended, modified or supplemented
except in accordance with the provisions of the immediately preceding sentence.
Notwithstanding the

                                       20
<PAGE>

foregoing, a waiver or consent to depart from the provisions hereof with respect
to a matter that relates exclusively to the rights of Resale Purchasers and that
does not directly or indirectly affect the rights of holders of Registrable
Securities or Exchange Securities may be given by each of the Resale Purchasers
affected thereby.

                  (c) NOTICES. All notices and other communications (including,
without limitation, any notices or other communications to the Pass Through
Trustee) provided for or permitted hereunder shall be made in writing and
delivered by hand delivery, registered first-class mail, next-day air courier or
telecopier:

                           (i) if to a holder of Registrable Securities, at the
                  most current address given by such holder to the Registrants
                  in accordance with the provisions of this Section 11(c), which
                  address initially is, with respect to the Purchasers, at the
                  address set forth in the Purchase Agreement and thereafter at
                  the address for such holders of Registrable Securities set
                  forth in the Security Register applicable to such Registrable
                  Securities; and

                           (ii) if to the Registrants, initially at their
                  respective addresses set forth in the Purchase Agreement and
                  thereafter at such other address, notice of which is given in
                  accordance with the provisions of this Section 11(c).

                  All such notices and communications shall be deemed to have
been duly given when delivered by hand, if personally delivered; five Business
Days after being deposited in the mail, postage prepaid, if mailed; one Business
Day after being timely delivered to a next-day air courier; and when received,
if telecopied.

                  Copies of all such notices, demands or other communications
shall be concurrently delivered by the Person giving the same to the Pass
Through Trustee at the address specified in the Pass Through Trust Agreements.

                  (d) SUCCESSORS AND ASSIGNS. This Agreement shall inure to the
benefit of and be binding upon the successors and assigns of each of the parties
hereto, including, without limitation and without the need for an express
assignment or any consent by the Registrants thereto, subsequent holders of
Registrable Securities.

                  (e) COUNTERPARTS. This Agreement may be executed in any number
of counterparts and by the parties hereto in separate counterparts, each of
which when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

                  (f) HEADINGS. The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning hereof.

                  (g) GOVERNING LAW. This Agreement and the rights and duties of
the parties hereunder shall be governed by, and construed in accordance with,
the laws of the State of New York. Each of the parties hereto hereby submits to
the non-exclusive jurisdiction of the Federal and State Courts of the Borough of
Manhattan in the City of

                                       21
<PAGE>

New York in any suit or proceeding arising out of or relating to this Agreement
or the transactions contemplated hereby.

                  (h) SEVERABILITY. In the event that any one or more of the
provisions contained herein, or the application thereof in any circumstances, is
held invalid, illegal or unenforceable in any respect for any reason, the
validity, legality and enforceability of any such provision in every other
respect and of the remaining provisions hereof shall not be in any way impaired
or affected thereby, it being intended that all of the rights and privileges of
the parties shall be enforceable to the fullest extent permitted by law.

                  (i) ENTIRE AGREEMENT. This Agreement, together with the
Purchase Agreement, is intended by the parties as a final expression of their
agreement, and is intended to be a complete and exclusive statement of the
agreement and understanding of the parties hereto in respect of the subject
matter contained herein and therein. There are no restrictions, promises,
warranties or undertakings, other than those set forth or referred to herein and
therein. This Agreement, together with the Purchase Agreement, supersedes all
prior agreements and understandings between the parties with respect to such
subject matter.

                  (j) SECURITIES HELD BY THE REGISTRANTS, ETC. Whenever the
consent or approval of holders of a specified percentage of principal amount of
Registrable Securities is required hereunder, Registrable Securities held by the
Registrants or any of their Affiliates (other than subsequent holders of
Registrable Securities if such subsequent holders are deemed to be Affiliates
solely by reason of their holdings of such Registrable Securities) shall not be
counted in determining whether such consent or approval was given by the holders
of such required percentage.

                                       22
<PAGE>

                  If the foregoing is in accordance with your understanding of
our agreement, please sign and return to the Registrants a counterpart hereof,
whereupon this instrument, along with all counterparts, will become a binding
agreement among the several Purchasers and the Registrants in accordance with
its terms.

                                              Very truly yours,

                                              EDISON MISSION ENERGY

                                              By:  /s/  Sam Henry
                                                 -------------------------------
                                                  Name: Sam Henry
                                                  Title:  Vice President

                                              MIDWEST GENERATION, LLC

                                              By:  /s/  Debbie L. Keller
                                                 -------------------------------
                                                  Name: Debbie L. Keller
                                                  Title: Vice President

The foregoing Registration
Rights Agreement is hereby
confirmed and accepted as of
the date first above written.

CREDIT SUISSE FIRST BOSTON CORPORATION
LEHMAN BROTHERS INC.
acting on behalf of themselves and as
representatives of the several Purchasers

By:  CREDIT SUISSE FIRST BOSTON CORPORATION

     By:  /s/ Jennifer L. Powers
        --------------------------------------
           Name: Jennifer L. Powers
           Title: Director

By:  LEHMAN BROTHERS INC.

     By:  /s/ Joseph Sauvage
        --------------------------------------
           Name:  Joseph Sauvage
           Title: Managing Director

                                       23<PAGE>

                                                                    Exhibit 4.12

--------------------------------------------------------------------------------

                             PARTICIPATION AGREEMENT

                                      (T1)

                           Dated as of August 17, 2000

                                      among

                             MIDWEST GENERATION, LLC

                                POWERTON TRUST I,

                            WILMINGTON TRUST COMPANY,
                     not in its individual capacity, except
                    as expressly provided herein, but solely
                                as Owner Trustee,

                           POWERTON GENERATION I, LLC,

                             EDISON MISSION ENERGY,

                     UNITED STATES TRUST COMPANY OF NEW YORK,
     not in its individual capacity, except as expressly provided herein,
                     but solely as Lease Indenture Trustee,

                                       and

                     UNITED STATES TRUST COMPANY OF NEW YORK,
     not in its individual capacity, except as expressly provided herein,
                      but solely as Pass Through Trustees,

                                POWERTON STATION

                 FOSSIL COAL-FIRED ELECTRIC GENERATING FACILITY

--------------------------------------------------------------------------------
<PAGE>

<TABLE>
<CAPTION>

                                TABLE OF CONTENTS
                                                                                                 Page
                                                                                                 ----
<S>                   <C>                                                                        <C>

SECTION I             DEFINITIONS; INTERPRETATION OF THIS
                      PARTICIPATION AGREEMENT.......................................................3

SECTION II            PARTICIPATION; CLOSING DATE; TRANSACTION
                      COSTS.........................................................................3
Section 2.1           Agreements to Participate.....................................................3
Section 2.2           Closing Date; Procedure for Participation.....................................5
Section 2.3           Transaction Costs.............................................................7

SECTION III           REPRESENTATIONS AND WARRANTIES................................................7
Section 3.1           Representations and Warranties of Midwest.....................................7
Section 3.2           Representations and Warranties of EME........................................14
Section 3.3           Representations and Warranties of the Owner Lessor...........................18
Section 3.4           Representations and Warranties of the Owner Trustee and
                      the Trust Company............................................................20
Section 3.5           Representations and Warranties of the Owner Participant......................22
Section 3.6           Representations and Warranties of Lease Indenture Trustee
                      and the Lease Indenture Company..............................................24
Section 3.7           Representations and Warranties of Pass Through Trustees
                      and the Pass Through Company.................................................26

SECTION IV            CLOSING CONDITIONS...........................................................28
Section 4.1           Operative Documents..........................................................28
Section 4.2           Certificates and the Lessor Notes............................................29
Section 4.3           Purchase Agreement...........................................................29
Section 4.4           Other Documents..............................................................29
Section 4.5           Representations and Warranties...............................................29
Section 4.6           Defaults, Events of Default, Events of Loss..................................29
Section 4.7           Consents.....................................................................29
Section 4.8           Governmental Actions.........................................................30
Section 4.9           Insurance....................................................................30
Section 4.10          Engineering Report...........................................................30
Section 4.11          Appraisal; Condition of the Facility.........................................30
Section 4.12          Opinion with Respect to Certain Tax Aspects..................................30

<PAGE>

                                                                                                 Page
                                                                                                 ----

Section 4.13          Opinions of Counsel..........................................................31
Section 4.14          Recordings and Filings.......................................................31
Section 4.15          Taxes........................................................................31
Section 4.16          No Changes in Requirements of Law............................................31
Section 4.17          Registered Agent for Midwest and EME.........................................32
Section 4.18          FAS 13.......................................................................32
Section 4.19          Rent Adjustments.............................................................32
Section 4.20          Parent Guaranty..............................................................32
Section 4.21          Title Insurance..............................................................32
Section 4.22          EME Guarantees...............................................................32
Section 4.23          Non-consolidation Opinion....................................................32
Section 4.24          Rating of Certificates.......................................................32
Section 4.25          EME Note.....................................................................33
Section 4.26          No Material Adverse Change...................................................33
Section 4.27          Subordination Agreement and Reimbursement Agreement..........................33
Section 4.28          Survey.......................................................................33

SECTION V             AFFIRMATIVE COVENANTS OF MIDWEST.............................................33
Section 5.1           Delivery of Certain Information..............................................33
Section 5.2           Financial Information........................................................34
Section 5.3           Information Concerning the Facility..........................................36
Section 5.4           Maintenance of Existence; Conduct of Business................................36
Section 5.5           Compliance with Requirements of Law and Contractual
                        Obligations................................................................36
Section 5.6           Environmental Covenant with Respect to the Facility and
                      the Facility Site............................................................36
Section 5.7           Further Assurances...........................................................37
Section 5.8           Access.......................................................................37

SECTION VI            NEGATIVE COVENANTS OF MIDWEST................................................38
Section 6.1           Merger and Consolidation.....................................................38
Section 6.2           Changes in Legal Form or Business............................................39

SECTION VII           AFFIRMATIVE COVENANTS OF EME.................................................39
Section 7.1           Financial Information, Reports, Notices......................................39

<PAGE>

                                                                                                 Page
                                                                                                 ----

Section 7.2           Maintenance of Corporate Existence...........................................41
Section 7.3           Further Assurances...........................................................41
Section 7.4           Taxes........................................................................41

SECTION VIII          NEGATIVE COVENANTS OF EME....................................................41
Section 8.1           Liens........................................................................41
Section 8.2           Consolidation, Merger; Asset Disposition.....................................42
Section 8.3           Amendment, Waiver or Assignment of Certain Documents.........................43

SECTION IX            COVENANTS OF THE TRUST COMPANY, THE
                      OWNER TRUSTEE AND THE OWNER LESSOR...........................................43
Section 9.1           Compliance with the Trust Agreement..........................................43
Section 9.2           Owner Lessor's Liens.........................................................43
Section 9.3           Amendments to Operative Documents............................................44
Section 9.4           Transfer of the Owner Lessor's Interest......................................44
Section 9.5           Owner Lessor; Trust Estate...................................................44
Section 9.6           Limitation on Indebtedness and Actions.......................................44
Section 9.7           Change of Location...........................................................44
Section 9.8           Bankruptcy of Trust..........................................................45
Section 9.9           ComEd Consent................................................................45

SECTION X             COVENANTS OF THE OWNER PARTICIPANT...........................................45
Section 10.1          Restrictions on Transfer of Beneficial Interest..............................45
Section 10.2          Owner Participant's Liens....................................................48
Section 10.3          Amendments or Revocation of Trust Agreement..................................48
Section 10.4          Prohibition on Fundamental Changes...........................................48
Section 10.5          Bankruptcy Filings...........................................................48
Section 10.6          Instructions.................................................................48
Section 10.7          Appointment of Successor Owner Trustee.......................................48
Section 10.8          Cooperation..................................................................49

SECTION XI            COVENANTS OF THE LEASE INDENTURE
                      TRUSTEE......................................................................49
Section 11.1          The Indenture Trustee's Liens................................................49

<PAGE>

                                                                                                 Page
                                                                                                 ----

SECTION XII           EME'S INDEMNIFICATIONS.......................................................49
Section 12.1          General Indemnity............................................................49
Section 12.2          General Tax Indemnity........................................................56

SECTION XIII          MIDWEST'S RIGHT OF QUIET ENJOYMENT...........................................67

SECTION XIV           SUPPLEMENTAL FINANCING OF IMPROVEMENTS;
                      OPTIONAL REFINANCINGS........................................................67
Section 14.1          Financing Improvements.......................................................67
Section 14.2          Optional Refinancing of Lessor Notes.........................................70
Section 14.3          Cooperation..................................................................73

SECTION XV            PRE-CLOSING ADJUSTMENTS TO BASIC LEASE
                      RENT AND TERMINATION VALUE...................................................73

SECTION XVI           RIGHT OF FIRST REFUSAL; RIGHT OF FIRST
                      OFFER........................................................................74
Section 16.1          Right of First Offer.........................................................74
Section 16.2          Right of First Refusal.......................................................75

SECTION XVII          SPECIAL LESSEE TRANSFER......................................................76

SECTION XVIII         MISCELLANEOUS................................................................77
Section 18.1          Consents.....................................................................77
Section 18.2          Successor Owner Lessor.......................................................77
Section 18.3          Bankruptcy of Trust Estate...................................................77
Section 18.4          Amendments and Waivers.......................................................78
Section 18.5          Notices......................................................................78
Section 18.6          Survival.....................................................................80
Section 18.7          Successors and Assigns.......................................................80
Section 18.8          Governing Law................................................................80
Section 18.9          Severability.................................................................80
Section 18.10         Counterparts.................................................................80
Section 18.11         Headings and Table of Contents...............................................81
Section 18.12         Limitation of Liability......................................................81

<PAGE>

                                                                                                 Page
                                                                                                 ----

Section 18.13         Consent to Jurisdiction; Waiver of Trial by Jury, Process
                      Agent........................................................................82
Section 18.14         Further Assurances...........................................................83
Section 18.15         Effectiveness................................................................83
Section 18.16         Measuring Life...............................................................83
Section 18.17         No Partnership, Etc..........................................................84
Section 18.18         Restrictions on Transfer of Membership Interest..............................84
Section 18.19         Limitation on Claims Against Midwest; Subordination of
                      Claims Against Midwest.......................................................86
Section 18.20         Guaranteed TV Amount.........................................................87

</TABLE>

<PAGE>

<TABLE>
<CAPTION>

APPENDICES:
<S>                  <C>

Appendix A           Definitions

EXHIBITS:
Exhibit A            Form of Bill of Sale
Exhibit B            Form of Facility Deed
Exhibit C            Form of Facility Lease
                           Exhibit A: Description of Facility Site
                           Exhibit B: Description of Facility
                                    Schedule 1-1: Basic Lease Rent
                                    Schedule 1-2: Allocation of Basic Lease Rent
                                    Schedule 1-3: 467 Rent Allocation
                                    Schedule 2: Termination Values
Exhibit D            Form of Memorandum of the Facility Lease
                           Exhibit A: Description of Facility
                           Exhibit B: Description of Site
                           Exhibit C: Form of Facility Site Lease
Exhibit E            Form of Facility Site Lease
Exhibit F            Form of Facility Site Sublease
Exhibit G            Form of Memorandum of the Facility Site Lease
Exhibit H            Form of Memorandum of the Facility Site Sublease
Exhibit I            Form of Lease Indenture
Exhibit J            Form of Lessor Notes (A&B)
Exhibit K            Form of Pass Through Trust Agreements (A&B)
Exhibit L            Form of Pass Through Certificates (A&B)
Exhibit M            Form of Certificate Purchase Agreement
Exhibit N            Form of (Amended and Restated) Trust Agreement
Exhibit O            Form of OP LLC Agreement
Exhibit P            Form of Tax Indemnity Agreement
Exhibit Q            Form of Purchase Agreement
Exhibit R            Form of EME Guarantee
Exhibit S            Form of EME OP Guarantee
Exhibit T            Form of EME Note
Exhibit U            Form of ComEd Consent
Exhibit V            [Intentionally Omitted]

<PAGE>

Exhibit W            Form of Registration Rights Agreement
Exhibit X            Form of Operation Agreement
Exhibit Y            Form of Owner Participant Guaranty
Exhibit Z            Form of Reimbursement Agreement
Exhibit AA           Form of Subordination Agreement
Exhibit BB           [Intentionally Omitted]
Exhibit CC           Form of Opinion of SASM&F, special counsel to Midwest and
                     EME
Exhibit DD           Form of Opinion of Sonnenschein, Nath and Rosenthal, special
                     Illinois counsel to Midwest and EME
Exhibit EE           Form of Opinion of Hunton & Williams, special New York counsel
                     to the Owner Participant and the Equity Investor
Exhibit FF           Form of Opinion of In-House Counsel to Midwest, EME and the
                     Owner Participant
Exhibit GG           Form of Opinion of Richards, Layton & Finger, P.A., counsel to
                     the Owner Lessor, the Trust Company, and the Owner Trustee,
Exhibit HH           Form of Opinion of Stadtmauer Bailkin LLP, special counsel to the
                     Lease Indenture Trustee and the Lease Indenture Company and
                     counsel to the Pass Through Trustees and the Pass Through
                     Company
Exhibit II           [Intentionally Omitted]
Exhibit JJ           Form of Opinion of Van Ness Feldman, special federal regulatory
                     to Midwest and EME
Exhibit KK           Form of Opinion of In-house counsel to the Owner Participant and
                     Equity Investor
Exhibit LL           Form of Assignment and Assumption Agreement
Exhibit MM           List of Competitors

SCHEDULES:

Schedule 3.1(c)      Midwest Governmental Approvals
                           Part B - Non-final Approvals
                           Part C - Threatened Approvals
Schedule 3.1(y)      Midwest Projections and other "forward looking" information
Schedule 3.2(c)      EME Governmental Approvals

<PAGE>

                           Part B - Non-final Approvals
                           Part C - Threatened Approvals
Schedule 3.2(o)      EME Projections and other "forward looking" information
Schedule 4.14        Recordings and Filings
Schedule 10.1(c)     Pricing Assumptions

</TABLE>

<PAGE>

                             PARTICIPATION AGREEMENT

                                      (T1)

                           This PARTICIPATION AGREEMENT (T1), dated as of August
         17, 2000 (as amended, supplemented or otherwise modified from time to
         time, in accordance with the provisions hereof, this "PARTICIPATION
         AGREEMENT" or this "AGREEMENT"), among, (i) MIDWEST GENERATION, LLC, a
         Delaware limited liability company as the Facility Lessee and as the
         Ground Lessor (herein, together with its successors and permitted
         assigns, called "MIDWEST"), (ii) POWERTON TRUST I, a Delaware business
         trust created for the benefit of Powerton Generation I, LLC, as the
         Facility Lessor and as the Ground Lessee (herein, together with its
         successors and permitted assigns, called the "OWNER LESSOR"), (iii)
         WILMINGTON TRUST COMPANY, a banking corporation organized and existing
         under the laws of the State of Delaware, not in its individual
         capacity, except as expressly provided herein, but solely as trustee
         under the Trust Agreement (herein in its capacity as a trustee under
         the Trust Agreement, together with its successors and permitted
         assigns, called the "OWNER TRUSTEE," and herein in its individual
         capacity, together with its successors and permitted assigns, called
         the "TRUST COMPANY"), (iv) POWERTON GENERATION I, LLC, a Delaware
         limited liability company (herein, together with its successors and
         permitted assigns, called the "OWNER PARTICIPANT"), (v) EDISON MISSION
         ENERGY, a corporation organized under the laws of the State of
         California (herein, together with its successors and permitted assigns,
         called "EME"), (vi) UNITED STATES TRUST COMPANY OF NEW YORK, not in its
         individual capacity, except as expressly provided herein, but solely as
         trustee under the Lease Indenture (herein in its capacity as trustee
         under the Lease Indenture, together with its successors and permitted
         assigns, the "LEASE INDENTURE TRUSTEE," and herein in its individual
         capacity, together with its successors and permitted assigns, the
         "LEASE INDENTURE COMPANY"), and (vii) UNITED STATES TRUST COMPANY OF
         NEW YORK, not in its individual capacity, except as expressly provided
         herein, but solely as trustee under each of the Pass Through Trust
         Agreements (herein in its capacity solely as trustee under the Pass
         Through Trust Agreements, together with its successors and permitted
         assigns, the "PASS THROUGH TRUSTEES," and herein in

                      POWERTON PARTICIPATION AGREEMENT (T1)

<PAGE>

         its individual capacity, together with its successors and permitted
         assigns, called the "PASS THROUGH COMPANY").

                                   WITNESSETH:

                  WHEREAS, Midwest owns certain electric generation and
related assets located in the State of Illinois, including the coal-fired
electric generating facility known as Powerton Station with an aggregate
capacity of approximately 1,538 MW, located in Tazewell County, Illinois;

                  WHEREAS, Midwest desires to (i) sell to the Owner Lessor
the Undivided Interest (which as described in Appendix A is an undivided
ownership interest in such facility) pursuant to the Bill of Sale and the
Deed, (ii) lease to the Owner Lessor the Ground Interest (which is a
corresponding undivided leasehold interest in the land upon which such
facility is located) and grant certain non-exclusive easements to the Owner
Lessor pursuant to the Facility Site Lease, (iii) lease the Undivided
Interest from the Owner Lessor pursuant to the Facility Lease and (iv)
sublease the Ground Interest from the Owner Lessor pursuant to the Facility
Site Sublease;

                  WHEREAS, concurrently with the execution and delivery of
this Agreement, the Equity Investor and Midwest have entered into the
Purchase Agreement pursuant to which the Equity Investor will acquire from
Midwest its membership interest in the Owner Participant;

                  WHEREAS, Midwest will make an intercompany loan to EME in
the aggregate amount equal to the Purchase Price (the "INTERCOMPANY LOAN")
and EME will issue a note to evidence such intercompany loan (the "EME NOTE");

                  WHEREAS, in consideration of the Intercompany Loan, and
concurrently with the execution and delivery of this Agreement, EME will
issue (i) the EME Guarantee in favor of the Owner Trust that, among other
things, guarantees the payment by Midwest of all Rent and (ii) the EME OP
Guarantee in favor of the Owner Participant, the Equity Investor and their
respective affiliates, successors, assigns, agents, members, partners,
directors, officers or employees, but excluding in

                                       2
<PAGE>

all cases the Owner Lessor, that guarantees the payment by Midwest of all
amounts owed by Midwest to the beneficiaries of the EME OP Guarantee;

                  WHEREAS, the Owner Participant has entered into the Trust
Agreement, pursuant to which the Owner Participant has authorized the Owner
Lessor to, among other things and subject to the terms and conditions hereof
and thereof, (i) issue the Lessor Notes and sell such Lessor Notes to the
Pass Through Trusts, (ii) lease the Ground Interest from Midwest pursuant to
the Facility Site Lease, (iii) lease the Undivided Interest to the Facility
Lessee pursuant to the Facility Lease, (iv) sublease the Ground Interest to
the Facility Lessee pursuant to the Facility Site Sublease and (v) grant to
the Lease Indenture Trustee for the benefit of the Holders liens and security
interests in the Indenture Estate to secure the Owner Lessor's obligations
with respect to the Lessor Notes;

                  WHEREAS, in order to provide a portion of the Purchase
Price payable by the Owner Lessor in respect of its acquisition of the
Undivided Interest pursuant to the Bill of Sale and Facility Deed, the Owner
Participant is willing to make an investment in the Owner Trust in an amount
equal to the Equity Investment, all in the manner and subject to the
conditions set forth herein;

                  WHEREAS, in order to provide the Owner Trust with the
balance of the Purchase Price, the Pass Through Trusts are willing to acquire
the Initial Lessor Notes for the amounts, in the manner and subject to the
conditions set forth herein and in the Lease Indenture;

                  WHEREAS, in order to provide funding to the Pass Through
Trusts, the Initial Purchasers are willing to acquire the Certificates for
the amounts, in the manner and subject to the conditions set forth in the
Pass Through Trust Agreements;

                  WHEREAS, the OP Guarantor will guarantee the payment and
performance obligations of the Owner Participant under the Operative
Documents pursuant to the Owner Participant Guaranty; and

                  WHEREAS, the parties hereto desire to consummate the
transactions contemplated hereby.

                                       3
<PAGE>

                  NOW, THEREFORE, in consideration of the foregoing premises,
the mutual agreements herein contained and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,
the parties hereto agree as follows:

SECTION I         DEFINITIONS; INTERPRETATION OF THIS PARTICIPATION
                  AGREEMENT

                  The capitalized terms used in this Agreement, including the
foregoing recitals, and not otherwise defined herein shall have the
respective meanings specified in Appendix A hereto. The general provisions
of Appendix A shall apply to terms used in this Agreement and specifically
defined herein.

SECTION II        PARTICIPATION; CLOSING DATE; TRANSACTION COSTS

         SECTION 2.1       AGREEMENTS TO PARTICIPATE.

                  Subject to the terms and conditions of this Agreement, and
in reliance on the agreements, representations and warranties made herein,
the parties agree to participate in the transactions described in this
SECTION 2.1 on the Closing Date as follows:

                           (a)      The Owner Participant will provide funds
in an amount sufficient to (i) fund the Equity Investment and (ii) pay the
Transaction Costs which the Owner Lessor is responsible to pay pursuant to
SECTION 2.3(a) hereof (collectively, the "OWNER PARTICIPANT'S COMMITMENT");

                           (b)      The Owner Lessor will (i) issue the
Initial Lessor Notes, (ii) sell the Initial Lessor Notes to the relevant Pass
Through Trustee and (iii) grant to the Lease Indenture Trustee, for the
benefit of the Pass Through Trustees, certain liens and security interests in
the Indenture Estate to secure its obligations with respect to the Lessor
Notes;

                           (c)      The Pass Through Trusts will use the
Proceeds to purchase the Initial Lessor Notes from the Owner Lessor;

                                       4
<PAGE>

                           (d)      The Owner Lessor will use the proceeds of
the (i) Owner Participant's Commitment and (ii) sale of the Initial Lessor
Notes to pay (x) the Purchase Price for the Undivided Interest to Midwest and
(y) the Transaction Costs which the Owner Lessor is responsible to pay
pursuant to SECTION 2.3(a) hereof;

                           (e)      Midwest will transfer the Undivided
Interest to the Owner Lessor by issuing the Facility Deed and a Bill of Sale
to the Owner Lessor;

                           (f)      The Owner Lessor and Midwest will enter
into the Facility Lease, pursuant to which the Owner Lessor will lease the
Undivided Interest to Midwest and Midwest will lease the Undivided Interest
from the Owner Lessor;

                           (g)      Midwest will enter into the Facility Site
Lease with the Owner Lessor, pursuant to which Midwest will lease the Ground
Interest to the Owner Lessor and grant to the Owner Lessor certain
non-exclusive easements and the Owner Lessor will lease the Ground Interest
from Midwest;

                           (h)      The Owner Lessor and Midwest will enter
into the Facility Site Sublease, pursuant to which the Owner Lessor will
sublease the Ground Interest to Midwest and Midwest will sublease the Ground
Interest from the Owner Lessor;

                           (i)      Midwest and the Equity Investor will
enter into the Purchase Agreement, pursuant to which Midwest will sell its
membership interest in the Owner Participant to the Equity Investor and the
Equity Investor will purchase Midwest's membership interest in the Owner
Participant from Midwest;

                           (j)      The OP Guarantor will guarantee the
performance and payment obligations of the Owner Participant under the
Operative Documents pursuant to the Owner Participant Guaranty;

                           (k)      The Owner Participant and EME will enter
into the Tax Indemnity Agreement;

                           (l)      EME will issue (i) the EME Guarantee,
(ii) the EME OP Guarantee and the Reimbursement Agreement;

                                       5
<PAGE>

                           (m)      The Owner Lessor will pay all Transaction
Costs which the Owner Lessor is responsible to pay pursuant to SECTION 2.3
hereof; and

                           (n)      the parties will enter into the
agreements referred to above and the other Operative Documents, in each case,
in substantially the form attached hereto.

         SECTION 2.2       CLOSING DATE; PROCEDURE FOR PARTICIPATION.

                           (a)      CLOSING DATE. The closing of the
transactions contemplated hereby (the "CLOSING") shall take place after
10:00 a.m., New York City time, on the Scheduled Closing Date or such other
date as the parties hereto shall mutually agree (the "CLOSING DATE"), at the
offices of SASM&F, Four Times Square, New York, New York 10036.

                           (b)      PROCEDURES FOR FUNDING. Unless the
Closing Date shall have been postponed pursuant to SECTION 2.2(c), subject to
the terms and conditions of this Agreement, the Owner Participant shall make
the Owner Participant's Commitment available not later than 10:00 a.m., New
York City time, on the Scheduled Closing Date, by transferring or delivering
such amount, in funds immediately available on the Scheduled Closing Date to
the Trust Company.

                           (c)      POSTPONEMENT OF THE CLOSING. The
Scheduled Closing Date may be postponed from time to time for any reason if
EME gives the Equity Investor, the Owner Participant, the Owner Lessor, the
Owner Trustee, the Lease Indenture Trustee and the Pass Through Trustees a
telex, telegraphic, facsimile or telephonic (confirmed in writing) notice of
such postponement and notice of the date to which the Closing has been
postponed, such notice of postponement to be received by each party no later
than 10:00 a.m., New York City time, on the Business Day immediately
preceding the Scheduled Closing Date. If, prior to receipt of a postponement
notice under this SECTION 2.2(c), the Owner Participant shall have provided
funds in accordance with SECTION 2.2(b), such funds shall be returned to the
Owner Participant as soon as reasonably practicable, but in no event later
than the Business Day following the Scheduled Closing Date, unless the Owner
Participant shall have otherwise directed. All funds made available pursuant
to SECTION 2.2(b) will be held by the Trust Company in trust for the Owner
Participant and shall not be part of the

                                       6
<PAGE>

Indenture Estate or the Trust Estate, shall be invested by the Trust Company
in accordance with clause (d) below and such funds shall remain the sole
property of the Owner Participant unless and until released by the Owner
Participant and made available to the Owner Trustee and applied to pay the
Purchase Price or Transaction Costs or returned to the Owner Participant, as
provided in this Agreement.

                           (d)      INVESTMENT OF FUNDS. If, on the Scheduled
Closing Date, the Owner Participant has made the Owner Participant's
Commitment available to the Trust Company in accordance with SECTION 2.2(b),
the Closing does not occur on such date and the Trust Company is unable to
return such funds to the Owner Participant, the Trust Company shall, subject
to SECTION 2.2(c) above, use reasonable efforts to invest such funds from
time to time at the written direction of EME, and at EME's sole expense and
risk, in Permitted Investments until such funds can be returned to the Owner
Participant. If, on the Scheduled Closing Date, the Owner Participant has
made the Owner Participant's Commitment available to the Trust Company in
accordance with SECTION 2.2(b), the Closing does not occur on such date and
the Trust Company has not returned such funds to the Owner Participant on or
before 1:00 p.m., New York City time, on such date, then EME shall reimburse
the Owner Participant for loss of the use of such funds at the Applicable
Rate for each day, from and including the day that such funds were made
available to the Trust Company by the Owner Participant to, but excluding the
earlier of (i) the day that such funds have been returned to the Owner
Participant pursuant to SECTION 2.2(c) (funds received by the Owner
Participant after 1:00 p.m., New York City time, of any day shall be deemed
to be returned on the next succeeding Business Day) and (ii) the Closing
Date. Subject to payment for the account of the Owner Participant of any
reimbursement for loss of use of funds due to it at the Applicable Rate, any
net gain realized on the investment of such funds (including interest) shall
be paid to EME by the Trust Company on the earlier of (i) the date such funds
are returned to the Owner Participant pursuant to SECTION 2.2(c) and (ii) the
Closing Date. The Trust Company shall not be liable for any interest on or
loss resulting from such investments and, if such funds are made available
to the Owner Lessor and utilized to pay the Purchase Price or Transaction
Costs on the Closing Date, EME shall reimburse the Trust Company for any net
loss realized on the investment of such funds. If such funds are not so
utilized, EME shall, in addition to its obligation to reimburse the Owner
Participant for loss of use as provided above, reimburse the Owner
Participant on the date such funds are returned to the Owner Participant for
any net loss realized on the investment of such funds. In order to obtain
funds for payment of the Purchase

                                       7
<PAGE>

Price or Transaction Costs or to return funds made available to the Owner
Lessor by the Owner Participant, the Trust Company is authorized to sell any
investments or obligations purchased as aforesaid.

                           (e)      EXPIRATION OF COMMITMENTS. The
obligations of the parties hereto shall expire at 11:59 p.m., New York City
time, on September 30, 2000. If the Closing Date has not occurred on or
before September 30, 2000, the parties hereto shall have no obligation to
consummate the transactions contemplated under this Agreement and, except as
provided in SECTIONS 2.3, 14.1 and 14.2, all obligations of the Lease
Financing Parties shall cease and terminate.

         SECTION 2.3       TRANSACTION COSTS AND OVERDUE RATE.

                           (a)      If the transactions contemplated by this
Agreement are consummated, all Transaction Costs not to exceed the Maximum
Transaction Costs, which shall be substantiated by an appropriate invoice or
otherwise supported in reasonable detail, shall be paid by the Owner Lessor
with the funds provided by the Owner Participant pursuant to SECTION 2.2(b)
above. EME shall be responsible for Transaction Costs in excess of the
Maximum Transaction Costs. All other fees, costs and expenses incurred by the
parties hereto shall be for their respective accounts.

                           (b)      If the transactions contemplated by this
Agreement are not consummated due to the failure of the Equity Investor to
negotiate in good faith or consummate the transactions on the basis of the
Equity Terms and Conditions and Equity Commitment Letter, each dated July 24,
2000, then the Equity Investor and Owner Participant shall pay their own
out-of-pocket expenses and the fees and expenses of their legal counsels and
advisors.

                           (c)      Subject to Section 2.3(b), if the
transactions contemplated by this Agreement are not consummated for any
reason, EME shall pay all Transaction Costs and reimburse each of the other
parties hereto for Transaction Costs of such parties, which shall be
substantiated by a reasonably detailed invoice.

                           (d)      Following the Closing Date, EME will be
responsible for, and will pay at no after-tax cost to the Owner Lessor (i)
the annual administration fees, if any, of the Owner Lessor (ii) fees and
expenses of the Owner Trustee and (iii) other fees and costs (but in no event
(but without derogation of EME's obliga-

                                       8
<PAGE>

tions under the EME Guarantee) interest, Make-Whole Premium, if any, or
principal) payable with respect to the Lessor Notes or Certificates, (other
than costs, fees and expenses associated with or resulting from a Lease
Indenture Event of Default which is not a Lease Event of Default). EME agrees
to pay, from and after the Closing Date, as and when due, to the Persons
entitled thereto, all amounts indicated in the Facility Lease to be paid by
EME.

                           (e)      EME agrees to reimburse Midwest for all
Transaction Costs paid by the Owner Lessor pursuant to SECTION 2.3(a) above.

                           (f)      EME shall pay, from and after the Closing
Date, interest, at the Overdue Rate, on any amounts that it has agreed or is
obligated to pay under the Operative Documents but that are not paid as and
when due.

SECTION III  REPRESENTATIONS AND WARRANTIES

         SECTION 3.1       REPRESENTATIONS AND WARRANTIES OF MIDWEST.
Midwest represents and warrants that, as of the date of execution and
delivery hereof and as of the Closing Date:

                           (a)      ORGANIZATION; POWER. Midwest (i) is a
Delaware limited liability company, duly organized, validly existing and in
good standing under the laws of the State of Delaware, (ii) is duly qualified
to do business and in good standing in each jurisdiction where the nature of
its business requires such qualification, and (iii) has all requisite power
and authority and holds all material requisite Governmental Approvals to
enter into and perform its obligations under this Agreement and each of the
other Operative Documents to which it is or will be a party and to conduct
the business of owning and operating the Facility and the sale and marketing
of wholesale electric power and other products and service related thereto,
except, with respect to clauses (ii) and (iii) above, where failure to be so
qualified or be in good standing or the failure to obtain such Governmental
Approvals would not, individually or in the aggregate, result in a Material
Adverse Effect on Midwest. Midwest is a direct, wholly owned subsidiary of
Holdings, which is, in turn, an indirect wholly owned subsidiary of EME.

                           (b)      DUE AUTHORIZATION; NON-CONTRAVENTION. The
execution, delivery and performance of this Agreement and each of the other
Operative

                                       9
<PAGE>

Documents to which it is or will be a party have been or when executed and
delivered will be duly authorized by all necessary company action and do not
and will not:

                                    (i)      contravene the Organic Documents of
         Midwest;

                                    (ii)    contravene any Requirement of Law or
         Contractual Obligation, binding on or affecting Midwest; or

                                    (iii)    result in, or require the creation
         or imposition of, any Lien (other than pursuant to the Operative Docu-
         ments) on any of the properties of Midwest;

                  except, in case of clauses (ii) and (iii) where such
contravention, creation or imposition would not result in a Material Adverse
Effect on Midwest.

                           (c)      GOVERNMENT APPROVALS. (i) All
Governmental Approvals required in connection with the execution and
delivery of, or performance of the transactions contemplated by, this
Agreement and the other Operative Documents to which Midwest is or will be a
party and the conduct of the business by Midwest are listed on SCHEDULE
3.1(c) and have been duly obtained or made and are in full force and effect,
in each case, other than (A) as may be required under existing Requirements
of Law to be obtained, given, accomplished or renewed at any time after the
date of execution and delivery hereof or from time to time after the Closing
Date in connection with the maintenance or operation of the Facility, (B)
which are routine in nature and which cannot be obtained and such failure to
obtain would not result in a Material Adverse Effect on Midwest, or are not
normally applied for, prior to the time they are required, and which Midwest
has no reason to believe will not be timely obtained, (C) as may be required
in connection with any refinancing of the Lessor Notes or the issuance of
Additional Lessor Notes, (D) as may be required in consequence of any
transfer of the Beneficial Interest or any transfer of ownership of the
Undivided Interest or the Trust Estate by the Owner Lessor or any
relinquishment of the use or operation of the Undivided Interest by Midwest
and (E) filing and recording to perfect the Lien of the Lease Indenture
Trustee and the ownership and leasehold interests conveyed pursuant to this
Agreement to the extent arrangements have been made satisfactory to the Owner
Participant, the Owner Lessor and the Lease Indenture Trustee. Except as
noted in Part B of SCHEDULE 3.1(c), all Govern-

                                       10
<PAGE>

mental Approvals that have been obtained pursuant to the first sentence of
this SECTION 3.1(c) are final and any period for the filing of notice of
rehearing or application for judicial review of the issuance of each such
Governmental Approval has expired without any such notice or application
having been made. No such Governmental Approval is the subject of any
pending or, except as indicated in PART C of SCHEDULE 3.1(c), threatened
judicial or administrative proceeding.

                                    (ii)     All consents and approvals required
         to be obtained from Persons other than Governmental Authorities in
         connections with the transactions contemplated by the Operative
         Documents have been obtained and are in full force and effect, other
         than such consents or approvals the failure of which to obtain, would
         not, individually or in the aggregate, result in a Material Adverse
         Effect on Midwest.

                           (d)      DISCLOSURE; NO MATERIAL OMISSION. The
Offering Circular does not contain any untrue statement of a material fact or
omit to state a material fact necessary in order to make the statements
contained therein, in light of the circumstances under which they were made,
not misleading; PROVIDED, HOWEVER, that no representation is given or made
with regard to (i) any forecasts or projections included therein or omitted
therefrom, or (ii) the descriptions of the Operative Documents or the tax
consequences to beneficial owners of Certificates.

                           (e)      SECURITIES ACT. Neither Midwest nor
anyone authorized by it has directly or indirectly offered or sold any
interest in the Beneficial Interest, the Lessor Notes or the Certificates or
any part thereof, or, except as disclosed in the Offering Circular in any
similar security or lease, or in any security or lease the offering of which
for the purposes of the Securities Act would be deemed to be part of the same
offering as the offering of the Beneficial Interest, the Lessor Notes or the
Certificates or any part thereof or solicited any offer to acquire any of the
same in violation of the registration requirements of Section 5 of the
Securities Act.

                           (f)      VALIDITY. Each of the Operative Documents
to which Midwest is or will be a party constitutes, or, upon the due
execution and delivery thereof by Midwest, will constitute, the legal, valid
and binding obligation of Midwest enforceable in accordance with its terms
(except as may be limited by bankruptcy, insolvency or other similar laws
affecting the enforcement of creditors'

                                       11
<PAGE>

rights generally and general principles of equity and except as indicated in
the legal opinion of SASM&F delivered pursuant to SECTION 4.13 hereof).

                           (g)      COMPLIANCE WITH REQUIREMENTS OF LAW.
Midwest is in compliance with all Requirements of Law (including ERISA and
regulations of the Federal Reserve System) and Contractual Obligations
applicable to it, except to the extent that failure to so comply would not
result or has not resulted in a Material Adverse Effect on Midwest.

                           (h)      MARGIN REGULATION. Midwest is not engaged
in the business of extending credit for the purposes of purchasing or
carrying margin stock, and no proceeds of the Lessor Notes and the Equity
Investment as contemplated by this Agreement and the other Operative
Documents will be used for a purpose which violates, or would be inconsistent
with, the Regulations T, U and X of the Federal Reserve System. Terms for
which meanings are provided in the Regulations T, U and X of the Federal
Reserve System or any regulations substituted therefor, as from time to time
in effect, are used in this SECTION 3.1 with such meanings.

                           (i)      LITIGATION. There is no pending or, to
the knowledge of Midwest, threatened, action, suit, investigation or
proceeding or labor controversy against Midwest or any of its properties,
business, assets or revenues or affecting any Governmental Approval before
any Governmental Authority which, if determined adversely to Midwest (taking
into account any insurance proceeds payable under a policy where the insurer
has accepted coverage without any reservations), would result in a Material
Adverse Effect on Midwest or the Facility Site.

                           (j)      TITLE; LIENS. (i) Midwest has good,
clear, marketable record fee title to the Facility, free and clear of all
Liens, encumbrances or title defects other than Permitted Encumbrances and
Lease Permitted Liens.

                                    (ii)    Midwest has good, clear, marketable
         record fee title in the Facility Site, free and clear of all Liens,
         encumbrances or title defects other than Permitted Encumbrances and
         Lease Permitted Liens.

                                    (iii)   Upon execution and delivery of the
         Operative Documents and recording of the instruments referred to in

                                       12
<PAGE>

         SCHEDULE 4.14, good, clear, record and valid leasehold interest in the
         Ground Interest will be duly, validly and effectively conveyed to the
         Owner Lessor upon the terms and conditions in the Facility Site Lease,
         free and clear of all Liens, encumbrances or title defects other than
         Permitted Encumbrances and Lease Permitted Liens.

                                    (iv)    Upon execution and delivery of the
         Operative Documents, good, clear, record and marketable fee simple
         title to the Undivided Interest will be duly, validly and effectively
         conveyed to the Owner Lessor, free and clear of all Liens, encum-
         brances or title defects other than Permitted Encumbrances and Lease
         Permitted Liens.

                                    (v)     None of the Permitted Encumbrances
         and Lease Permitted Liens will, on and after the date of execution and
         delivery hereof and the Closing, materially interfere with the use,
         operation or possession of the Facility (as contemplated by the Opera-
         tive Documents) or the use of or the exercise by the Owner Lessor of
         its rights under the Facility Site Lease with respect to the Facility.

                           (k)      TAX RETURNS. Midwest has filed all
federal, state and local tax returns and reports required by law to have been
filed by it and has paid all Taxes shown to be due and payable on such
returns or pursuant to any assessment received by it (other than Taxes and
assessments which are being diligently contested in good faith by Midwest and
with respect to which adequate reserves have to the extent required by GAAP
been set aside on its books).

                           (l)      INVESTMENT COMPANY ACT. Midwest is not
subject to any regulation as an "investment company" within the meaning of
the Investment Company Act of 1940, as amended.

                           (m)      HOLDING COMPANY ACT. (i) Midwest is an
"exempt wholesale generator" under PUHCA, is interconnected with the high
voltage network and has access to transmission services and ancillary
services to sell wholesale electric power, and has the authority to sell
wholesale electric power at market-based rates.

                                       13
<PAGE>

                                    (ii)     Midwest is not subject to (i)
         regulation as a "holding company," a "public utility company" or a
         "subsidiary company" or an "affiliate" of a "holding company" required
         to register under PUHCA or (ii) public utility regulation or regulation
         as an alternative retail electric supplier under the laws of the State
         of Illinois.

                           (n)      ENVIRONMENTAL WARRANTIES. Except as has
not or would not, individually or in the aggregate, result in a Material
Adverse Effect on Midwest:

                                    (i)      (A) To the knowledge of Midwest,
         the Facility and the Facility Site have been, and continue to be,
         owned, leased and operated in compliance with all applicable
         Environmental Laws and (B) Midwest is and has been in compliance with
         all applicable Environmental Laws.

                                    (ii)     There are no pending or, to the
         knowledge of Midwest, threatened Environmental Claims involving or
         against Midwest, the Facility or Facility Site.

                                    (iii)    Midwest has obtained and is in
         compliance with all Governmental Approvals required under any
         applicable Environmental Law necessary for its business and, with
         respect to the Governmental Approvals not obtained by the date of
         execution and delivery hereof, (a) Midwest has no reason to believe
         that such approvals will not be timely obtained and (b) the failure to
         have obtained such Governmental Approvals by the date of execution and
         delivery hereof will not result in a Material Adverse Effect on Mid-
         west.

                                    (iv)     Neither the Facility nor the
         Facility Site is listed or, to the knowledge of Midwest, is proposed
         for listing on the National Priorities List pursuant to any
         Environmental Law, on the CERCLIS or on any similar state or local list
         of sites requiring investigation or clean-up.

                                       14
<PAGE>

                                    (v)     To the knowledge of Midwest, no
         Environmental Conditions exist at, on, under or about the Facility or
         the Facility Site which, with the passage of time, or the giving of
         notice or both, would give rise to any Environmental Claim.

                                    (vi)    Other than as provided in the ASA,
         Midwest has not assumed or retained, by contract or operation of law,
         any liabilities of any kind, fixed or contingent, known or unknown,
         under any applicable Environmental Law.

                           (o)      PENSION AND WELFARE PLANS. During the
consecutive twelve-month period prior to each date as of which the following
representations are made or deemed made, no steps have been taken to
terminate any Pension Plan; no contribution failure has occurred with respect
to any Pension Plan sufficient to give rise to a Lien under Section 302(f) of
ERISA or Section 412 of the Code; no condition exists or event or
transaction has occurred with respect to any Pension Plan which could
reasonably be expected to result in the incurrence by Midwest or any member
of the Controlled Group of any material liability (other than liabilities
incurred in the ordinary course of maintaining the Pension Plan), fine or
penalty and none of the following events or conditions, either individually
or in the aggregate, has resulted or is reasonably likely to result in a
material liability to Midwest or any member of the Controlled Group: (i) a
Reportable Event; (ii) a complete or partial withdrawal from any
Multiemployer Plan by Midwest or any member of the Controlled Group; (iii)
any liability of Midwest or any member of the Controlled Group under ERISA if
Midwest or any member of the Controlled Group were to withdraw completely
from all Multiemployer Plans as of the annual valuation date most closely
preceding the date on which this representation is made or deemed made; or
(iv) the Reorganization or Insolvency of any Multiemployer Plan. Neither
Midwest nor any member of the Controlled Group has any contingent liability
with respect to any post-retirement benefit under a Welfare Plan which could
reasonably be expected to have a Material Adverse Effect on Midwest, other
than liability for continuation coverage described in Part 6 of Title I of
ERISA.

                           (p)      LOCATION OF CHIEF EXECUTIVE OFFICE AND
PRINCIPAL PLACE OF BUSINESS, ETC. The chief executive office and principal
place of business of Midwest and the office where Midwest keeps its corporate
records concerning the

                                       15
<PAGE>

Facility, the Facility Site and the other Operative Documents is located at
One Finance Place, 440 South LaSalle Street, Suite 3500, Chicago, Illinois
60605.

                           (q)      ACCESS; EGRESS. Midwest has sufficient
access to public roads, easements of ingress and egress and other rights of
access to permit use and operation of the Facility and the Facility Site as
contemplated by the Operative Documents.

                           (r)      ABILITY TO DELIVER POWER. Midwest has
rights necessary to deliver power to the point of interconnection to the
electricity grid.

                           (s)      POWER SALES AGREEMENTS AND OTHER
CONTRACTS. There are no contracts or agreements providing for sales of power
and ancillary services produced by the Facility or for the use and operation
of the Facility that have a term which extends beyond the expiration of the
Basic Lease Term other than the Interconnection Agreement.

                           (t)      UTILITY SERVICES. The Facility and the
Facility Site have available all necessary public utility services for the
use and operation of the Facility as currently being used and as contemplated
by the Operative Documents.

                           (u)      SUBDIVISION. No subdivision is necessary
in connection with the transaction contemplated by Operative Documents.

                           (v)      ADEQUATE RIGHTS. Based upon Requirements
of Law in effect on the Closing Date, the rights and interests made, or to be
made available to the Owner Lessor or its permitted transferees pursuant to
the Operative Documents, together with the rights of the Owner Lessor as
owner of the Undivided Interest, are sufficient to permit the following
actions by the Owner Lessor or any such permitted transferee following the
expiration or termination of the Facility Lease: (i) the occupation,
interconnection, maintenance and repair of the Facility, (ii) the use,
operation and possession of the Facility, (iii) the construction, use,
operation, possession, maintenance and renewal of all modifications,
additions, improvements, replacements and substitutions thereof and thereto,
(iv) appropriate ingress to and egress from the Facility for any reasonable
purpose in connection with the exercise of rights under the Operation
Agreement and such Person's interest in the Facility, (v) access to the
off-site unloading dock, transportation and storage areas for fuel

                                       16
<PAGE>

handling, storage and transportation and access to the off-site lake for
water-cooling, (vi) transmission of the electric energy and ancillary
services provided by the Facility to the nearest point of interconnection to
the relevant electricity grid and (vii) the disposal of by-products and waste
from the Facility.

                           (w)      RETURN ACCEPTANCE TESTS. Midwest has no
reason to believe that the Facility will not be able to satisfy the return
conditions set forth in SECTION 5 of the Facility Lease as of the expiration
of the Facility Lease Term if the Facility is maintained in accordance with
SECTION 7 of the Facility Lease.

                           (x)      NO DEFAULTS. NO EVENT OF LOSS. No Lease
Event of Default, Material Lease Default or event that with the passage of
time or notice or both would constitute a Lease Event of Default has occurred
or will occur upon execution and delivery of the Operative Documents. No
Event of Loss has occurred or will occur upon the execution and delivery of
the Operative Documents.

                           (y)      ACCURACY OF INFORMATION. (A) All factual
information provided in writing by Midwest or its Affiliates to (i) the
Engineering Consultant, in connection with the preparation of the Engineering
Report and (ii) the Appraiser, in connection with the preparation of the
Closing Date Appraisal (other than projections and "forward-looking"
information) is true and materially accurate in every material respect on the
date as of which such information is dated or certified, and to the knowledge
of Midwest, such information is not incomplete by omitting to state any
material fact necessary in order to make the statements contained therein, in
light of the circumstances under which they are made, not misleading.

                           (B)      All projections and other "forward
looking" information contained in the items specified on SCHEDULE 3.1(y)
were prepared in good faith and are based upon reasonable assumptions.

         SECTION 3.2       REPRESENTATIONS AND WARRANTIES OF EME. EME
represents and warrants that, as of the date of execution and delivery hereof
and as of the Closing Date:

                           (a)      ORGANIZATION; POWER. EME (i) is a
California corporation, duly organized, validly existing and in good
standing under the laws of the State

                                       17
<PAGE>

of California, (ii) is duly qualified to do business and in good standing in
each jurisdiction where the nature of its business requires such
qualification, and (iii) has all requisite power and authority and holds all
material requisite Governmental Approvals to enter into and perform its
obligations under this Agreement and each of the other Operative Documents to
which it is or will be a party and to conduct its business as currently
conducted and currently expected to be conducted, except, with respect to
clauses (ii) and (iii) above, where failure to be so qualified or be in good
standing or the failure to obtain such Governmental Approvals could not,
individually or in the aggregate, reasonably be expected to cause a Material
Adverse Effect on EME.

                           (b)      DUE AUTHORIZATION; NON-CONTRAVENTION. The
execution, delivery and performance of this Agreement and each of the
Operative Documents to which it is or will be a party have been or when
executed and delivered will be duly authorized by all necessary company
action and do not and will not:

                           (i) contravene the Organic Documents of EME;

                           (ii) contravene any Requirement of Law or Contractual
                  Obligation, binding on or affecting EME; or

                           (iii) result in, or require the creation or
                  imposition of, any Lien (other than pursuant to the Operative
                  Documents) on any of the properties of EME;

                  except, in case of clauses (ii) and (iii) where such
contravention, creation or imposition would not result in a Material Adverse
Effect on EME.

                           (c)      GOVERNMENT APPROVALS. (i) All
Governmental Approvals required in connection with the execution and delivery
of, or performance of the transactions contemplated by, this Agreement and
the other Operative Documents to which EME is or will be a party and the
conduct of the business by EME are listed on SCHEDULE 3.2(c) and have been
duly obtained or made and are in full force and effect, in each case, other
than (A) as may be required under existing Requirements of Law to be
obtained, given, accomplished or renewed at any time after the date of
execution and delivery hereof or from time to time after the Closing Date in
connection with the transactions contemplated by the Operative Documents

                                       18
<PAGE>

and (B) which are routine in nature and which cannot be obtained and such
failure to obtain would not result in a Material Adverse Effect on EME, or are
not normally applied for, prior to the time they are required, and which EME
has no reason to believe will not be timely obtained. Except as noted in Part B
of SCHEDULE 3.2(c), all Governmental Approvals that have been obtained pursuant
to the first sentence of this SECTION 3.2(c) are final, and any period for the
filing of notice of rehearing or application for judicial review of the
issuance of each such Governmental Approval has expired without any such notice
or application having been made. No such Governmental Approval is the subject
of any pending or, except as indicated in PART C of SCHEDULE 3.2(c), threatened
judicial or administrative proceeding.

                           (ii)     All consents and approvals required to be
                  obtained from Persons other than Governmental Authorities in
                  connection with the transactions contemplated by the Operative
                  Documents have been obtained and are in full force and effect,
                  other than such consents or approvals the failure of which to
                  obtain, would not, individually or in the aggregate, result in
                  a Material Adverse Effect on EME.

                           (d)      DISCLOSURE; NO MATERIAL OMISSION. The
Offering Circular does not contain any untrue statement of a material fact or
omit to state a material fact necessary in order to make the statements
contained therein, in light of the circumstances under which they were made,
not misleading; PROVIDED, HOWEVER, that no representation is given or made with
regard to (i) any forecasts or projections included therein or omitted
therefrom or (ii) the descriptions of the Operative Documents or the tax
consequences to beneficial owners of Certificates.

                           (e)      VALIDITY. Each of the Operative Documents
to which EME is a party constitutes, or, upon the due execution and delivery
thereof by EME, will constitute, the legal, valid and binding obligation of EME
enforceable in accordance with its terms (except as may be limited by
bankruptcy, insolvency or other similar laws affecting the enforcement of
creditors' rights generally and general principles of equity and except as
indicated in the legal opinion of SASM&F delivered pursuant to SECTION 4.13
hereof).

                           (f)      COMPLIANCE WITH REQUIREMENTS OF LAW. EME is
in compliance with all Requirements of Law (including ERISA and regulations of
the Federal Reserve System) and Contractual Obligations applicable to it,
except to the

                                        19
<PAGE>

extent that failure to so comply would not result or has not resulted in a
Material Adverse Effect on EME.

                           (g)      MARGIN REGULATION. EME is not engaged in
the business of extending credit for the purposes of purchasing or carrying
margin stock, and no proceeds of the Lessor Notes and the Equity Investment as
contemplated by this Agreement and other Operative Documents will be used for a
purpose which violates, or would be inconsistent with, the Regulations T, U and
X of the Federal Reserve System. Terms for which meanings are provided in the
Regulations T, U and X of the Federal Reserve System or any regulations
substituted therefor, as from time to time in effect, are used in this SECTION
3.2 with such meanings.

                           (h)      LITIGATION. There is no pending or, to the
knowledge of EME, threatened, action, suit, Environmental Claim, investigation,
proceeding or labor controversy against EME or any of its properties, business,
assets or revenues or affecting any Governmental Approval before any
Governmental Authority hereto which, if determined adversely to EME (taking
into account any insurance proceeds payable under a policy where the insurer
has accepted coverage without any reservations), would result in a Material
Adverse Effect on EME.

                           (i)      TAX RETURNS. EME has filed all federal,
state and local tax returns and reports required by law to have been filed by
it and has paid all Taxes shown to be due and payable on such returns or
pursuant to any assessment received by it (other than Taxes and assessments
which are being diligently contested in good faith by Holdings by appropriate
proceedings and with respect to which adequate reserves have to the extent
required by GAAP been set aside on its books).

                           (j)      INVESTMENT COMPANY ACT. EME is not subject
to regulation as an "investment company" within the meaning of the Investment
Company Act of 1940, as amended.

                           (k)      HOLDING COMPANY ACT. EME is not subject to
(i) regulation as a "holding company," a "public utility company," or a
"subsidiary company" or an "affiliate" of a "holding company" required to
register under PUHCA except that it is a "subsidiary company" of Edison
International which is a "holding company" that is exempt from all regulation
under PUHCA (except Section 9(a)(2) thereof) pursuant to Section 3(a) thereof.

                                        20
<PAGE>

                           (l)      PENSION AND WELFARE PLANS. During the
consecutive twelve- month period prior to each date as of which the following
representations are made or deemed made, no steps have been taken to terminate
any Pension Plan; no contribution failure has occurred with respect to any
Pension Plan sufficient to give rise to a Lien under Section 302(f) of ERISA or
Section 412 of the Code; no condition exists or event or transaction has
occurred with respect to any Pension Plan which could reasonably be expected to
result in the incurrence by EME or any member of the Controlled Group of any
material liability (other than liabilities incurred in the ordinary course of
maintaining the Pension Plan), fine or penalty which could reasonably be
expected to have a Material Adverse Effect with respect to it. Neither EME nor
any member of the Controlled Group has any contingent liability with respect to
any post-retirement benefit under a Welfare Plan which could reasonably be
expected to have a Material Adverse Effect on EME, other than liability for
continuation coverage described in Part 6 of Title I of ERISA.

                           (m)      LOCATION OF CHIEF EXECUTIVE OFFICE AND
PRINCIPAL PLACE OF BUSINESS, ETC. The chief executive office and principal
place of business of EME and the office where EME keeps its corporate records
is located at 18101 Von Karman Avenue, Suite 1700, Irvine, California 92612.

                           (n)      RANKING OF GUARANTEES. The obligations of
EME under each of the EME Guarantees are senior, unsecured Indebtedness of EME
ranking at least pari passu with all other senior unsecured Indebtedness of EME.

                           (o)      ACCURACY OF INFORMATION. (A) All factual
information provided in writing by EME or its Affiliates to (i) the Engineering
Consultant, in connection with the preparation of the Engineering Report and
(ii) the Appraiser, in connection with the preparation of the Closing Date
Appraisal (other than projections and "forward-looking" information) is true
and materially accurate in every material respect on the date as of which such
information is dated or certified, and to the knowledge of EME, such
information is not incomplete by omitting to state any material fact necessary
in order to make the statements contained therein, in light of the
circumstances under which they are made, not misleading.

                                        21

<PAGE>

                           (B)      All projections and "forward looking"
information contained in items specified on SCHEDULE 3.2(o) were prepared in
good faith and are based on reasonable assumptions.

         SECTION 3.3       REPRESENTATIONS AND WARRANTIES OF THE OWNER LESSOR.
The Owner Lessor represents and warrants that as of the date of execution and
delivery hereof and as of the Closing Date:

                           (a)      DUE ORGANIZATION. The Owner Lessor is a
duly organized and validly existing "business trust" as such term is defined in
12 Del. C. Section 3801 (a) under the laws of the State of Delaware of which
the Owner Participant is the beneficial owner, and has the power and authority
to enter into and perform its obligations under this Agreement and each of the
other Operative Documents to which it is or will be a party.

                           (b)      DUE AUTHORIZATION, ENFORCEABILITY; ETC. (i)
This Agreement and each of the other Operative Documents (other than the Lessor
Notes) to which the Owner Lessor is or will be a party has been or when
executed and delivered will be duly authorized, executed and delivered by the
Owner Lessor, and assuming the due authorization, execution and delivery of
this Agreement by each party hereto other than the Owner Lessor, this Agreement
constitutes, and when executed and delivered each of the other Operative
Documents (other than the Lessor Notes) to which it is or will be a party, will
be the legal, valid and binding obligations of the Owner Lessor, enforceable
against the Owner Lessor in accordance with its terms, except as the same may
be limited by bankruptcy, insolvency, fraudulent conveyance, reorganization,
arrangement, moratorium or other laws relating to or affecting the rights of
creditors generally and by general principles of equity.

                                    (ii)     Upon the execution of the Lessor
         Notes by the Owner Lessor, authentication of the Lessor Notes by the
         Lease Indenture Trustee and delivery of such Lessor Notes against
         payment therefor, the Lessor Notes will constitute legal, valid and
         binding obligations of the Owner Lessor, enforceable against the Owner
         Lessor in accordance with their terms, except as the same may be
         limited by bankruptcy, insolvency, fraudulent conveyance, reorgani-
         zation, arrangement, moratorium or other laws relating to or affecting
         the rights of creditors generally and by general principles of equity.

                                        22
<PAGE>

                           (c)      NON-CONTRAVENTION. The execution and
delivery by the Owner Lessor of this Agreement and the other Operative
Documents to which it is or will be a party, the consummation by the Owner
Lessor of the transactions contemplated hereby and thereby, and the compliance
by the Owner Lessor with the terms and provisions hereof and thereof, do not
and will not contravene (except where such contravention would not result in a
Material Adverse Effect on the Owner Lessor) (i) the Trust Agreement or any of
the Organic Documents of the Owner Lessor or (ii) any Requirement of Law or the
provisions of, or constitute a default by the Owner Lessor under any indenture,
mortgage, deed of trust or other material contract, agreement or instrument to
which the Owner Lessor is a party or by which the Owner Lessor or its property
is bound, or in the creation of any Owner Lessor's Lien upon the Trust Estate;
PROVIDED, HOWEVER, that no representation is made with respect to the right,
power or authority of the Owner Lessor to act as operator of the Facility
following a Lease Event of Default or the expiration or termination of the
Facility Lease.

                           (d)      GOVERNMENTAL ACTIONS. Assuming the
representation and warranties of Midwest contained in paragraphs (c), (g), (l),
(m) and (n) of SECTION 3.1 are true, no authorization or approval or other
action by, and no notice to or filing or registration with, any Governmental
Authority is required for the due execution, delivery or performance by the
Owner Lessor, as the case may be, of the Trust Agreement, the Lessor Notes,
this Agreement or the other Operative Documents to which the Owner Lessor is
or will be a party, other than any such authorization or approval or other
action or notice or filing as has been duly obtained, taken or given; PROVIDED,
HOWEVER, that no representation is made with respect to the right, power or
authority of the Owner Lessor to act as operator of the Facility following a
Lease Event of Default or the expiration or termination of the Facility Lease.

                           (e)      LITIGATION. There is no pending or, to the
knowledge of the Owner Lessor, threatened, action, suit, investigation or
proceeding against the Owner Lessor before any Governmental Authority which, if
determined adversely to it, would materially adversely affect the ability of
the Owner Lessor to perform its obligations under the Trust Agreement, the
Lessor Notes, this Agreement or the other Operative Documents to which it is or
will be a party or would materially adversely affect the Facility, the Facility
Site or any interest therein or part thereof or the Lien of the Lease Indenture
Trustee on the Trust Estate or which questions the validity or

                                        23
<PAGE>

enforceability of any Operative Document to which the Owner Lessor is or will
be a party.

                           (f)      LIENS. The Owner Lessor's right, title and
interest in and to the Trust Estate is free of any Owner Lessor's Liens.

                           (g)      COMPLIANCE WITH REQUIREMENTS OF LAW. The
Owner Lessor is in compliance with all Requirements of Law, rules, regulations,
orders, judgments, writs and decrees (including ERISA and regulations of the
Federal Reserve System), except where failure to so comply, individually or in
the aggregate, would not result or has not resulted in a Material Adverse
Effect on the Owner Lessor.

                           (h)      INVESTMENT COMPANY ACT; PUBLIC UTILITY
HOLDING COMPANY ACT. The Owner Lessor is not (i) an "investment company" or a
company "controlled" by an "investment company," within the meaning of the
Investment Company Act of 1940, as amended, (ii) a "holding company," a "public
utility company" or a "subsidiary company" of a "holding company" within the
meaning of PUHCA, or (iii) subject to any other Requirement of Law which
purports to restrict or regulate its ability to borrow money.

                           (i)      SECURITIES ACT. Neither the Owner Lessor
nor anyone authorized by it has directly or indirectly offered or sold any
interest in the Lessor Notes or any part thereof, or, except as disclosed in
the Offering Circular, in any similar security or lease, the offering of which
for the purposes of the Securities Act would be deemed to be part of the same
offering as the offering of the Lessor Notes or any part thereof or solicited
any offer to acquire any of the same in violation of the registration
requirements of Section 5 of the Securities Act.

                           (j)      LOCATION OF CHIEF EXECUTIVE OFFICE;
PRINCIPAL PLACE OF BUSINESS; SITUS. The chief executive office and principal
place of business of the Owner Lessor where the Owner Lessor will keep its
corporate records concerning the Facility, the Facility Site and the Operative
Documents is located in Wilmington, Delaware. The situs of the Owner Lessor is
in Delaware.

                           (k)      PAYMENT OF TAXES. The Owner Lessor has
filed all federal, state and local tax returns and reports required by law to
have been filed by it

                                        24
<PAGE>

and has paid all Taxes shown to be due and payable on such returns or pursuant
to any assessment received by it (other than Taxes and assessments which are
being diligently contested in good faith by the Owner Lessor and with respect
to which adequate reserve have, to the extent required by GAAP, been set aside
on its books).

         SECTION 3.4       REPRESENTATIONS AND WARRANTIES OF THE OWNER TRUSTEE
AND THE TRUST COMPANY. The Trust Company (only with respect to representations
and warranties relating to the Trust Company) and the Owner Trustee hereby
severally represent and warrant that, as of the date of execution and delivery
hereof and as of the Closing Date:

                           (a)      DUE INCORPORATION; ETC. The Trust Company
is a banking corporation duly organized, validly existing and in good standing
under the laws of the State of Delaware, has the corporate power and authority,
as the Owner Trustee and/or in its individual capacity to the extent expressly
provided herein or in the Trust Agreement, to enter into and perform its
obligations under the Trust Agreement, this Agreement and each of the other
Operative Documents to which it is or will be a party.

                           (b)      DUE AUTHORIZATION, ENFORCEABILITY; ETC. (w)
The Trust Agreement has been duly authorized, executed and delivered by the
Trust Company, and (x) assuming the due authorization, execution and delivery
of the Trust Agreement by the Owner Participant, the Trust Agreement
constitutes the legal, valid and binding obligation of the Trust Company,
enforceable against it in its individual capacity or as Owner Trustee, as the
case may be, in accordance with its terms, except as the same may be limited by
bankruptcy, insolvency, fraudulent conveyance, reorganization, arrangement,
moratorium or other laws relating to or affecting the rights of creditors
generally and by general principles of equity.

                                    (i)     (y) This Agreement has been duly
         authorized, executed and delivered by the Owner Trustee and the Trust
         Company, and (z) assuming the due authorization, execution and delivery
         of this Agreement by each party hereto other than the Owner Trustee and
         the Trust Company, this Agreement constitutes a legal, valid and
         binding obligation of the Owner Trustee and the Trust Company,
         enforceable against the Trust Company or the Owner Trustee, as the case
         may be, in accordance with its terms, except as

                                        25
<PAGE>

         the same may be limited by bankruptcy, insolvency, fraudulent con-
         veyance, reorganization, arrangement, moratorium or other laws relating
         to or affecting the rights of creditors generally and by general
         principles of equity.

                                    (ii)    (x) Each of the other Operative
         Documents to which the Trust Company or the Owner Trustee is or will
         be a party has been or when executed and delivered will be duly author-
         ized, executed and delivered by the Trust Company or the Owner
         Trustee and (y) assuming the due authorization, execution and deliv-
         ery of each of the other Operative Documents by each party thereto
         other than the Trust Company or the Owner Trustee, each of the other
         Operative Documents to which the Trust Company or the Owner Trustee is
         or will be a party constitutes or when executed and delivered will
         constitute a legal, valid and binding obligation of the Trust Company
         or the Owner Trustee, as the case may be, enforceable against the
         Trust Company or the Owner Trustee in accordance with its terms,
         except as the same may be limited by bankruptcy, insolvency,
         fraudulent conveyance, reorganization, arrangement, moratorium or
         other laws relating to or affecting the rights of creditors generally
         and by general principles of equity.

                           (c)      NON-CONTRAVENTION. The execution and
delivery by the Trust Company, in its individual capacity or as Owner Trustee,
as the case may be, of the Trust Agreement, this Agreement and the other
Operative Documents to which it is or will be a party, the consummation by the
Trust Company, in its individual capacity or as Owner Trustee, as the case may
be, of the transactions contemplated hereby and thereby, and the compliance by
the Trust Company, in its individual capacity or as Owner Trustee, as the case
may be, with the terms and provisions hereof and thereof, do not and will not
(i) contravene any Requirement of Law of the State of Delaware or the United
States governing the banking or trust powers of the Trust Company, the Trust
Agreement, or its Organic Documents, or (ii) contravene the provisions of, or
constitute a default by the Trust Company under, or result in the creation of
any Owner Lessor's Lien attributable to it in its individual capacity and
unrelated to the transactions contemplated by the Operative Documents upon the
Trust Estate under any indenture, mortgage or other material contract,
agreement or instrument to which the Trust Company is a party or by which the
Trust Company or

                                        26
<PAGE>

its property is bound; PROVIDED, HOWEVER, that no representation is made with
respect to the right, power or authority of the Trust Company or the Owner
Trustee to act as operator of the Facility following a Lease Event of Default.

                           (d)      GOVERNMENTAL ACTIONS. Assuming the
representations and warranties of Midwest contained in paragraphs (c), (g),
(l), (m) and (n) of SECTION 3.1 are true, no authorization or approval or other
action by, and no notice to or filing or registration with, any Governmental
Authority of the State of Delaware or the United States governing the banking
or trust powers of the Trust Company is required for the due execution,
delivery or performance by the Trust Company or the Owner Trustee, as the case
may be, of the Trust Agreement, this Agreement or the other Operative Documents
to which the Trust Company or the Owner Trustee is or will be a party, other
than any such authorization or approval or other action or notice or filing as
has been duly obtained, taken or given.

                           (e)      LITIGATION. There is no pending or, to the
actual knowledge of the Trust Company, threatened action, suit, investigation
or proceeding against the Trust Company either in its individual capacity or as
the Owner Trustee, as the case may be, before any Governmental Authority of the
State of Delaware or the United States governing its banking and trust powers
which, if determined adversely to it, would materially adversely affect the
ability of the Trust Company, in its individual capacity or as Owner Trustee,
as the case may be, to perform its obligations under the Trust Agreement, this
Agreement or the other Operative Documents to which it is or will be a party or
would materially adversely affect the Facility, the Facility Site or any
interest therein or part thereof or the security interest of the Lease
Indenture Trustee in the Trust Estate or which question the validity or
enforceability of any Operative Document to which the Trust Company, in its
individual capacity or as the Owner Trustee, is or will be a party.

                           (f)      LIENS. The Trust Estate is free of any
Owner Lessor's Liens attributable to the Trust Company or the Owner Trustee.

         SECTION 3.5       REPRESENTATIONS AND WARRANTIES OF THE OWNER
PARTICIPANT. The Owner Participant represents and warrants that, as of the
Closing Date and giving effect to the transactions contemplated by the Purchase
Agreement:

                                        27
<PAGE>

                           (a)      DUE ORGANIZATION. The Owner Participant is
a limited liability company duly organized, validly existing and in good
standing under the laws of the State of Delaware and has the necessary power
and authority to enter into and perform its obligations under this Agreement,
the Trust Agreement, the OP LLC Agreement and the Tax Indemnity Agreement.

                           (b)      DUE AUTHORIZATION, ENFORCEABILITY; ETC.
This Agreement, the Trust Agreement, the Tax Indemnity Agreement and the other
Operative Documents to which it is or will be a party have been or when
executed and delivered will be duly authorized, executed and delivered by the
Owner Participant and assuming the due authorization, execution and delivery by
each other party thereto, this Agreement, the Trust Agreement, the Tax
Indemnity Agreement and the other Operative Documents to which it is or will be
a party constitute or when executed and delivered will constitute the legal,
valid and binding obligations of the Owner Participant, enforceable against the
Owner Participant in accordance with their respective terms, except as the same
may be limited by bankruptcy, insolvency, fraudulent conveyance,
reorganization, arrangement, moratorium or other laws relating to or affecting
the rights of creditors generally and by general principles of equity.

                           (c)      NON-CONTRAVENTION. The execution and
delivery by the Owner Participant of this Agreement, the Trust Agreement, the
OP LLC Agreement and the Tax Indemnity Agreement, the consummation by the Owner
Participant of the transactions contemplated hereby and thereby, and the
compliance by the Owner Participant with the terms and provisions hereof and
thereof, do not and will not contravene any Requirement of Law binding on the
Owner Participant (except where such contravention would not result in a
Material Adverse Effect on the Owner Participant), or its Organic Documents, or
contravene the provisions of, or constitute a default under, or result in the
creation of any Owner Participant's Lien (other than any Lien created under any
Operative Document) upon the Trust Estate under any indenture, mortgage or
other material contract, agreement or instrument to which the Owner Participant
is a party or by which the Owner Participant or its property is bound (it being
understood that no representation or warranty is being made as to any
Requirement of Law relating to the Facility or the Facility Site other than its
representations set forth in SECTION 3.3(g) hereof or Section 4975 of the
Code).

                                        28
<PAGE>

                           (d)      GOVERNMENTAL ACTION. Assuming the
representations and warranties of EME contained in paragraphs (c), (f), (j) and
(k) of SECTION 3.2 and the representation and warranties of Midwest contained
in paragraphs (c), (g), (l), (m) and (n) of SECTION 3.1 are true, no
authorization or approval or other action by, and no notice to or filing or
registration with, any Governmental Authority is required for the due
execution, delivery or performance by the Owner Participant of this Agreement,
the Trust Agreement, the OP LLC Agreement or the Tax Indemnity Agreement, other
than any authorization or approval or other action or notice or filing as has
been duly obtained, taken or given (it being understood that no representation
or warranty is being made as to any Requirements of Law relating to the
ownership or operation of the Facility or the Facility Site).

                           (e)      LITIGATION. There is no pending or, to the
knowledge of the Owner Participant, threatened action, suit, investigation or
proceeding against the Owner Participant before any Governmental Authority
which, if determined adversely to it, would materially adversely affect the
Owner Participant's ability to perform its obligations under this Agreement,
the Trust Agreement, the OP LLC Agreement or the Tax Indemnity Agreement or
would materially adversely affect the Facility, the Facility Site or any
interest therein or part thereof or the Lien of the Lease Indenture Trustee in
the Trust Estate or which questions the validity or enforceability of any
Operative Document to which the Owner Participant is or will be a party.

                           (f)      LIENS. The Trust Estate is free of any
Owner Participant's Liens.

                           (g)      ERISA. No part of the funds to be used by
the Owner Participant to make its investment pursuant to this Agreement,
directly or indirectly, constitutes or is deemed to constitute assets (within
the meaning of ERISA and any applicable rules, regulations and court decisions
thereunder) of any Plan.

                           (h)      REGULATORY EVENT OF LOSS. The Owner
Participant is not aware of any fact or circumstance that would constitute or
cause a Regulatory Event of Loss.

                           (i)      SECURITIES ACT. Neither the Owner
Participant nor anyone authorized by it has directly or indirectly offered or
sold any interest in the

                                      29
<PAGE>

Beneficial Interest, the Lessor Notes or any part thereof, or, except as
disclosed in the Offering Circular, in any similar security or lease, the
offering of which for the purposes of the Securities Act would be deemed to be
part of the same offering as the offering of the Beneficial Interest, the
Lessor Notes or any part thereof or solicited any offer to acquire any of the
same in violation of the registration requirements of Section 5 of the
Securities Act.

                           (j)      HOLDING COMPANY ACT AND FEDERAL POWER ACT.
Immediately prior to executing this Agreement, the Owner Participant is not (i)
an "electric utility," "electric utility company," "public utility,"
"public-utility company," "holding company" under the Federal Power Act or
PUHCA or (ii) a "subsidiary" or "affiliate" of a "holding company" required to
register under PUHCA.

                           (k)      PAYMENT OF TAXES. The Owner Participant has
filed all federal, state and local tax returns and reports required by law to
have been filed by it and has paid all Taxes shown to be due and payable on
such returns or pursuant to any assessment received by it (other than Taxes and
assessments which are being diligently contested in good faith by the Owner
Participant and with respect to which adequate reserves have, to the extent
required by GAAP, been set aside on its books).

         SECTION 3.6       REPRESENTATIONS AND WARRANTIES OF LEASE INDENTURE
TRUSTEE AND THE LEASE INDENTURE COMPANY. The Lease Indenture Company and the
Lease Indenture Trustee hereby severally represents and warrants that, as of
the date of execution hereof and as of the Closing Date:

                           (a)      DUE ORGANIZATION. The Lease Indenture
Company is a banking corporation duly organized, validly existing and in good
standing under the laws of the State of New York, has the corporate power and
authority, as Lease Indenture Trustee and/or in its individual capacity to the
extent expressly provided herein or in the Lease Indenture, to enter into and
perform its obligations under the Lease Indenture, this Agreement and each of
the other Operative Documents to which it is or will be a party.

                           (b)      DUE AUTHORIZATION, ENFORCEABILITY; ETC. (i)
(A) This Agreement has been duly authorized, executed and delivered by the
Lease Indenture Trustee and the Lease Indenture Company, and (B) assuming the
due authorization, execution and delivery of this Agreement by each party
hereto other than the Lease

                                      30
<PAGE>

Indenture Trustee and the Lease Indenture Company, this Agreement constitutes a
legal, valid and binding obligation of the Lease Indenture Company and the
Lease Indenture Trustee, enforceable against the Lease Indenture Company or the
Lease Indenture Trustee, as the case may be, in accordance with its terms,
except as the same may be limited by bankruptcy, insolvency, fraudulent
conveyance, reorganization, arrangement, moratorium or other laws relating to
or affecting the rights of creditors generally and by general principles of
equity.

                                    (ii)     (A) Each of the other Operative
         Documents to which the Lease Indenture Trustee is or will be a party
         has been or when executed and delivered will be duly authorized,
         executed and delivered by the Lease Indenture Trustee, and (B) assuming
         the due authorization, execution and delivery of each of the other
         Operative Documents by each party thereto other than the Lease
         Indenture Trustee, each of the other Operative Documents to which the
         Lease Indenture Trustee is or will be a party constitutes or when
         executed and delivered will be a legal, valid and binding obligation of
         the Lease Indenture Trustee, enforceable against the Lease Indenture
         Trustee in accordance with its terms, except as the same may be limited
         by bankruptcy, insolvency, fraudulent conveyance, reorganization,
         arrangement, moratorium or other laws relating to or affecting the
         rights of creditors generally and by general principles of equity.

                           (c)      NON-CONTRAVENTION. The execution and
delivery by the Lease Indenture Company, in its individual capacity or as Lease
Indenture Trustee, as the case may be, of this Agreement and the other
Operative Documents to which it is or will be a party, the consummation by the
Lease Indenture Company, in its individual capacity or as Lease Indenture
Trustee, as the case may be, of the transactions contemplated hereby and
thereby, and the compliance by the Lease Indenture Company, in its individual
capacity or as Lease Indenture Trustee, as the case may be, with the terms and
provisions hereof and thereof, do not and will not contravene any Requirement
of Law of the United States of America governing the Lease Indenture Company or
the banking or trust powers of the Lease Indenture Company, or its
organizational documents or by-laws, or contravene the provisions of, or
constitute a default by the Lease Indenture Company under, or result in the
creation of any Lien attributable to the Lease Indenture Company upon the
Indenture Estate or any indenture, mortgage or other material contract,
agreement or instrument to which the Lease Indenture Company is a party or by
which the Lease Indenture

                                      31
<PAGE>

Company or its property is bound which would materially adversely affect the
ability of the Lease Indenture Company, in its individual capacity or as Lease
Indenture Trustee, as the case may be, to perform its obligations under this
Agreement or the other Operative Documents to which it is or will be a party or
would materially adversely affect the Facility, the Facility Site or any
interest therein or part thereof or the security interest of the Lease
Indenture Trustee in the Indenture Estate; PROVIDED, HOWEVER, that no
representation is made with respect to the right, power or authority of the
Lease Indenture Company or the Lease Indenture Trustee to act as operator of
the Facility following a Lease Event of Default.

                           (d)      GOVERNMENTAL ACTION. Assuming the
representations and warranties of Midwest contained in paragraphs (c), (g),
(l), (m) and (n) of SECTION 3.1 are true, no authorization or approval or other
action by, and no notice to or filing or registration with, any Governmental
Authority governing its banking or trust powers is required for the due
execution, delivery or performance by the Lease Indenture Company or the Lease
Indenture Trustee, as the case may be, of this Agreement or the other Operative
Documents to which the Lease Indenture Trustee is or will be a party, other
than any such authorization or approval or other action or notice or filing as
has been duly obtained, taken or given.

                           (e)      LITIGATION. There is no pending or, to the
knowledge of the Lease Indenture Company, threatened action, suit,
investigation or proceeding against the Lease Indenture Company either in its
individual capacity or as Lease Indenture Trustee, before any Governmental
Authority which, if determined adversely to it, would materially adversely
affect the ability of the Lease Indenture Company, in its individual capacity
or as Lease Indenture Trustee, as the case may be, to perform its obligations
under this Agreement or the other Operative Documents to which it is or will
be a party or would materially adversely affect the Facility, the Facility Site
or any interest therein or part thereof or the security interest of the Lease
Indenture Trustee in the Indenture Estate.

         SECTION 3.7       REPRESENTATIONS AND WARRANTIES OF PASS THROUGH
TRUSTEES AND THE PASS THROUGH COMPANY. The Pass Through Company and each Pass
Through Trustee hereby severally represents and warrants that, as of the date
of execution hereof and as of the Closing Date:

                                      32
<PAGE>

                           (a)      DUE ORGANIZATION. The Pass Through Company
is a banking corporation duly organized, validly existing and in good standing
under the laws of the State of New York, has the corporate power and authority,
as Pass Through Trustee and/or in its individual capacity to the extent
expressly provided herein or in the Pass Through Trust Agreements, to enter
into and perform its obligations under the Pass Through Trust Agreement, this
Agreement and each of the other Operative Documents to which it is or will be a
party.

                           (b)      DUE AUTHORIZATION, ENFORCEABILITY; ETC. (i)
(A) This Agreement has been duly authorized, executed and delivered by the Pass
Through Trustees and the Pass Through Company and (B) assuming the due
authorization, execution and delivery of this Agreement by each party hereto
other than each Pass Through Trustee and the Pass Through Company, as the case
may be, this Agreement constitutes a legal, valid and binding obligation of
the Pass Through Company and each Pass Through Trustee, enforceable against the
Pass Through Company or each Pass Through Trustee, as the case may be, in
accordance with its terms, except as the same may be limited by bankruptcy,
insolvency, fraudulent conveyance, reorganization, arrangement, moratorium or
other laws relating to or affecting the rights of creditors generally and by
general principles of equity.

                                    (ii)     (A) Each of the other Operative
         Documents to which the Pass Through Company or such Pass Through
         Trustee is or will be a party has been or when executed and delivered
         will be duly authorized, executed and delivered by the Pass Through
         Company or such Pass Through Trustee, as the case may be, and (B)
         assuming the due authorization, execution and delivery of each of the
         other Operative Documents by each party thereto other than the Pass
         Through Company or such Pass Through Trustee, as the case may be, each
         of the other Operative Documents to which the Pass Through Company or
         such Pass Through Trustee is or will be a party constitutes or when
         executed and delivered will constitute a legal, valid and binding
         obligation of the Pass Through Company or such Pass Through Trustee,
         enforceable against the Pass Through Company or such Pass Through
         Trustee, as the case may be, in accordance with its terms, except as
         the same may be limited by bankruptcy, insolvency, fraudulent
         conveyance, reorganization, arrangement, moratorium or other laws
         relating to or affecting the rights of creditors generally and by
         general principles of equity.

                                      33
<PAGE>

                           (c)      NON-CONTRAVENTION. The execution and
delivery by the Pass Through Company, in its individual capacity or as Pass
Through Trustee, as the case may be, of this Agreement and the other Operative
Documents to which it is or will be a party, the consummation by the Pass
Through Company, in its individual capacity or as Pass Through Trustee, as the
case may be, of the transactions contemplated hereby and thereby, and the
compliance by the Pass Through Company, in its individual capacity or as Pass
Through Trustee, as the case may be, with the terms and provisions hereof and
thereof, do not and will not contravene any Requirement of Law of the United
States of America or the State of New York governing the Pass Through Company
or the banking or trust powers of the Pass Through Company, or its
organizational documents or by-laws, or contravene the provisions of, or consti-
tute a default by the Pass Through Company under, or result in the creation of
any Lien attributable to the Pass Through Company upon the Certificates or any
indenture, mortgage or other material contract, agreement or instrument to
which the Pass Through Company is a party or by which the Pass Through Company
or its property is bound which would materially adversely affect the ability of
the Pass Through Company, in its individual capacity or as Pass Through
Trustee, as the case may be, to perform its obligations under this Agreement or
the other Operative Documents to which it is a party or would materially
adversely affect the Facility, the Facility Site or any interest therein or
part thereof or the security interest of any Pass Through Trustee in the
Indenture Estate; PROVIDED, HOWEVER, that no representation is made with
respect to the right, power or authority of the Pass Through Company or any
Pass Through Trustee to act as operator of the Facility following a Lease Event
of Default.

                           (d)      GOVERNMENTAL ACTION. Assuming the
representation and warranties of Midwest contained in paragraphs (c), (g), (1),
(m) and (n) of SECTION 3.1 are true, no authorization or approval or other
action by, and no notice to or filing or registration with, any Governmental
Authority governing its banking or trust powers is required for the due
execution, delivery or performance by the Pass Through Company or any Pass
Through Trustee, as the case may be, of this Agreement or the other Operative
Documents to which such Pass Through Trustee is or will be a party, other than
any such authorization or approval or other action or notice or filing as has
been duly obtained, taken or given.

                           (e)      LITIGATION. There is no pending or, to the
knowledge of the Pass Through Company, threatened action, suit, investigation
or proceeding

                                      34
<PAGE>

against the Pass Through Company either in its individual capacity or as Pass
Through Trustee, before any Governmental Authority which, if determined
adversely to it, would materially adversely affect the ability of the Pass
Through Company, in its individual capacity or as Pass Through Trustee, as the
case may be, to perform its obligations under this Agreement or the other
Operative Documents to which it is a party or would materially adversely affect
the Facility, the Facility Site or any interest therein or part thereof or the
security interest of any Pass Through Trustee in the Indenture Estate.

SECTION IV    CLOSING CONDITIONS

         The obligations of the Owner Participant, the Owner Lessor, the Owner
Trustee, the Lease Indenture Trustee, the Pass Through Trustees, Midwest and
EME to consummate the transactions contemplated hereby on the Closing Date
shall be subject to prior or concurrent satisfaction or waiver of the following
conditions, except that the obligations of any Person shall not be subject to
such Person's own performance or compliance.

         SECTION 4.1       OPERATIVE DOCUMENTS. On or before the Closing Date,
each of the Operative Documents to be delivered at the Closing shall have been
duly authorized, executed and delivered by the parties thereto in substantially
the form attached as an Exhibit hereto, shall each be in full force and effect,
and executed counterparts of each shall have been delivered to each of the
parties hereto.

         SECTION 4.2       CERTIFICATES AND THE LESSOR NOTES. Each of the
conditions precedent contained in the Certificate Purchase Agreement shall have
been satisfied or waived by the Initial Purchasers and such Initial Purchasers
shall have purchased the Certificates pursuant to, and in accordance with, the
terms of the Certificate Purchase Agreement and the Proceeds shall have been
provided to the Owner Lessor through the purchase by the Pass Through Trustees
of the applicable Initial Lessor Notes;

         SECTION 4.3       PURCHASE AGREEMENT. The Equity Investor shall have
purchased Midwest's membership interest in the Owner Participant pursuant to
the Purchase Agreement.

                                      35
<PAGE>

         SECTION 4.4       OTHER DOCUMENTS. Each of the Lease Financing Parties
shall have received certified copies of the Organic Documents of each of the
other parties hereto (except for the Lease Indenture Trustee and the Pass
Through Trustees, who shall not be required to provide such documents) and
resolutions of the board of directors or managers (or managing members), as the
case may be, of each such other Lease Financing Party duly authorizing the
Overall Transaction and such documents and such evidence as each party may
reasonably request in order to establish the authority of each such other party
to consummate the transactions contemplated by this Agreement, the taking of
all corporate and other proceedings in connection therewith and compliance with
the conditions herein or therein set forth and the incumbency of all officers
signing any of the Operative Documents. Each of the foregoing documents shall
be reasonably satisfactory to the recipient.

         SECTION 4.5       REPRESENTATIONS AND WARRANTIES. The representation
and warranties set forth in SECTION 3 hereof shall be true and correct on and
as of the Closing Date with the same effect as though made on and as of the
Closing Date and each of the Lease Financing Parties shall have received a
certificate of each of the parties hereto to such effect.

         SECTION 4.6       DEFAULTS, EVENTS OF DEFAULT, EVENTS OF LOSS. No
Lease Event of Default, Lease Indenture Event of Default or Event of Loss or
event that, with the passage of time or giving of notice or both, would
constitute a Lease Event of Default, Lease Indenture Event of Default or an
Event of Loss shall have occurred and be continuing.

         SECTION 4.7       CONSENTS. All material permits, licenses, approvals
and consents necessary to consummate the Overall Transaction (including any
consent required from ComEd or any lenders to EME, Holdings, Midwest or their
Affiliates) shall have been duly obtained and shall be in full force and effect
and in form and substance satisfactory to each of the Lease Financing Parties.

         SECTION 4.8       GOVERNMENTAL ACTIONS. All actions, if any, required
to have been taken by any Governmental Authority on or prior to the Closing
Date in connection with the transactions contemplated by any Operative
Documents on the Closing Date, including, without limitation, the FERC Orders,
shall have been taken and all orders, permits, waivers, exemptions,
authorizations and approvals of and registrations with such Governmental
Authorities required to be in effect on the

                                      36
<PAGE>

Closing Date in connection with the transactions contemplated by the Operative
Documents on the Closing Date shall have been issued; and all such orders,
permits, waivers, exemptions, authorizations and approvals shall be in full
force and effect on the Closing Date.

         SECTION 4.9       INSURANCE. Insurance (including all related
endorsements) complying with the requirements of SECTION 11 of the Facility
Lease shall be in full force and effect and all premiums thereon shall be
current. The Owner Participant, the Equity Investor, the Owner Trustee, the
Owner Lessor, the Lease Indenture Trustee and the Pass Through Trustees shall
have received a certificate or certificates dated the Closing Date of an
independent insurance broker or carrier reasonably satisfactory to such Persons
stating that such insurance is in full force and effect. The Equity Investor
and the Owner Participant shall have received a report from their insurance
consultant in form and substance satisfactory to them.

         SECTION 4.10      ENGINEERING REPORT. The Owner Participant, the
Equity Investor, the Lease Indenture Trustee and the Pass Through Trustees
shall have received, on or before the Closing Date, a copy of the Engineering
Report and the Owner Participant and the Equity Investor shall have received a
report of R. W. Beck, each such document in form and substance reasonably
satisfactory to the recipients.

         SECTION 4.11      APPRAISAL; CONDITION OF THE FACILITY. The Owner
Participant and the Equity Investor shall have received the Closing Date
Appraisal prepared by the Appraiser addressed and delivered only to the Equity
Investor and the Owner Participant and satisfactory in form and substance to
the recipients. The Owner Participant shall be satisfied that the Facility
shall be in the condition described in the Closing Date Appraisal. The Lease
Indenture Trustee, the Pass Through Trustees and the Initial Purchasers shall
have received a copy of the verification of value, useful life and estimated
residual value prepared by the Appraiser in connection with the appraisal of
assets subject to the Facility Lease, each of which will be reasonably
satisfactory to the recipient.

         SECTION 4.12      OPINION WITH RESPECT TO CERTAIN TAX ASPECTS. The
Owner Participant and the Equity Investor shall have received a satisfactory
tax opinion, dated the Closing Date, of Hunton & Williams addressed and
delivered only to the Owner Participant and the OP Guarantor.

                                      37
<PAGE>

         SECTION 4.13      OPINIONS OF COUNSEL. Each of the relevant Lease
Financing Parties shall have received an opinion or opinions, dated the Closing
Date, of (a) SASM&F, special counsel to Midwest and EME, substantially in the
form of Exhibit CC, (b) Sonnenschein, Nath and Rosenthal, special Illinois
counsel to Midwest and EME, substantially in the form of Exhibit DD, (c) Hunton
& Williams, special New York counsel to the Owner Participant and the Equity
Investor, substantially in the form of Exhibit EE, (d) in-house counsel to
Midwest, EME and the Owner Participant, substantially in the form of Exhibit
FF, (e) Richards, Layton & Finger, P.A., counsel to the Owner Lessor, the Trust
Company, and the Owner Trustee, substantially in the form of Exhibit GG, (f)
Stadtmauer Bailkin LLP, special counsel to the Lease Indenture Trustee and the
Lease Indenture Company, substantially in the form of Exhibit HH addressed to
such Person, (g) Stadtmauer Bailkin LLP, counsel to the Pass Through Trustees
and the Pass Through Company, substantially in the form of Exhibit II, (h) Van
Ness Feldman, special federal regulatory counsel to Midwest and EME,
substantially in the form of Exhibit JJ, and (i) in-house counsel to the Owner
Participant and the Equity Investor, substantially in the form of Exhibit KK.
Each such Person expressly consents to the rendering by its counsel of the
opinion referred to in this SECTION 4.13 and acknowledges that such opinion
shall be deemed to be rendered at the request and upon the instructions of such
Person, each of whom has consulted with and has been advised by its counsel as
to the consequences of such request, instructions and consent. Furthermore,
each such counsel shall, to the extent requested, permit the Rating Agencies
and the Initial Purchasers to rely on their opinion as if such opinion were
addressed to such parties.

         SECTION 4.14      RECORDINGS AND FILINGS. All filings and recordings
listed on Schedule 4.14 hereto shall have been duly made and all filing,
recordation, transfer and other fees payable in connection therewith shall have
been paid; and the filing of all precautionary financing statements under the
Uniform Commercial Code of Illinois and any other mortgages, security
agreements or other documents as may be reasonably requested by counsel to the
Owner Participants, the Lease Indenture Trustee or the Pass Through Trustees to
perfect the right, title and interest of the Owner Lessor in the Owner Lessor's
Interest, or any part thereof or interest therein and the Lien of the Lease
Indenture Trustee in the Indenture Estate, shall have been made.

                                      38
<PAGE>

         SECTION 4.15      TAXES. All Taxes, if any, due and payable on or
before the Closing Date in connection with the execution, delivery, recording
and filing of this Agreement or any other Operative Document, or any document
or instrument contemplated thereby shall have been duly paid in full.

         SECTION 4.16      NO CHANGES IN REQUIREMENTS OF LAW. No change shall
have occurred in Requirements of Law or the interpretation thereof by any
competent court or other Governmental Authority that would make it illegal for
the Equity Investor, the Owner Participant, the Owner Lessor, the Owner Trustee
or Midwest to participate in any of the transactions contemplated by the
Operative Documents or would materially adversely affect the Facility, the
Undivided Interest or the Ground Interest. No change in the Tax law shall have
occurred with respect to which no adjustment has been made pursuant to SECTION
15 hereof.

         SECTION 4.17      REGISTERED AGENT FOR MIDWEST AND EME. CT Corporation
System shall have been appointed by Midwest and EME as registered agent for
service of process in the State of New York as provided in the Operative
Documents and CT Corporation System shall have accepted such appointment.

         SECTION 4.18      FAS 13. The present value of Basic Lease Rent
payable during the Basic Lease Term under the Facility Lease (taking into
account any rent adjustment through or contemplated on the Closing Date),
together with all rent payable under the Facility Site Sublease and all
Transaction Costs financed through the Facility Lease, discounted at the
Discount Rate, shall satisfy the 90 percent test for operating lease treatment
under FAS 13.

         SECTION 4.19      RENT ADJUSTMENTS. No rent adjustment made or
contemplated on the Closing Date (other than adjustments to reflect a change in
Transaction Costs or the actual interest rate on the Initial Lessor Notes)
shall cause either (i) the after-tax present value of Basic Lease Rent
discounted at 6% per annum, compounded annually to increase by more than 100
basis points or (ii) the total Basic Lease Rent to increase by more than 2.0%.

         SECTION 4.20      PARENT GUARANTY. The OP Guarantor shall have
executed and delivered to the other Lease Financing Parties an Owner
Participant Guaranty substantially in the form of Exhibit Y hereto.

                                        39

<PAGE>

         SECTION 4.21      TITLE INSURANCE. Each of the Title Policies shall
have been delivered to the Owner Participant, the Equity Investor, the Lease
Indenture Trustee and Pass Through Trustees.

         SECTION 4.22      EME GUARANTEES. EME shall have executed and
delivered (i) to the Owner Lessor the EME Guarantee substantially in the form
of Exhibit R hereto and (ii) the EME OP Guarantee to the beneficiaries thereof
substantially in the form of Exhibit S hereto.

         SECTION 4.23      NON-CONSOLIDATION OPINION. Hunton & Williams,
Special New York counsel to the Owner Participant shall have delivered to the
Rating Agencies a non-consolidation opinion, if requested by any Rating Agency,
with respect to non-consolidation of the Owner Participant into its immediate
parent.

         SECTION 4.24      RATING OF CERTIFICATES. The Certificates shall be
rated at least Baa1 by Moody's and A- by S&P.

         SECTION 4.25      EME NOTE. EME shall have issued to Midwest the EME
Note substantially in the form of Exhibit T attached hereto.

         SECTION 4.26      NO MATERIAL ADVERSE CHANGE. No material adverse
change has occurred with respect to Midwest, the Facility or the Facility Site
since March 31, 2000.

         SECTION 4.27      SUBORDINATION AGREEMENT AND REIMBURSEMENT AGREEMENT.
On or before the Closing Date, each of the Subordination Agreement and the
Reimbursement Agreement shall have been duly authorized, executed and
delivered by the parties thereto in substantially the form attached as Exhibits
AA and Z respectively, and shall each be in full force and effect, and executed
counterparts of each shall have been delivered to each of the parties hereto
and thereto.

         SECTION 4.28      SURVEY. The Owner Participant, the Equity Investor,
the Lease Indenture Trustee and Pass Through Trustees shall have received a
copy of the Survey in form and substance reasonably satisfactory to the
recipients.

                                        40

<PAGE>

SECTION V   AFFIRMATIVE COVENANTS OF MIDWEST

         Midwest covenants and agrees that it will perform the obligations set
forth in this SECTION 5.

         SECTION 5.1       DELIVERY OF CERTAIN INFORMATION. Midwest shall
furnish prompt written notice to the Owner Trustee, the Owner Lessor, the Owner
Participant and, for so long as the Lien of the Lease Indenture has not been
terminated or discharged, the Lease Indenture Trustee and the Pass Through
Trustees:

                           (a)      as soon as possible and in any event within
five Business Days after any Authorized Officer of Midwest obtains knowledge of
the occurrence of any default under any material agreement to which Midwest is
a party or any termination thereof, in each case, together with a statement of
an Authorized Officer of Midwest setting forth details of such event of
default, default or termination and the action Midwest has taken and proposes
to take with respect thereto;

                           (b)      as soon as possible and in any event within
five Business Days after the commencement of, or the occurrence of any material
adverse development with respect to, any litigation, action, proceeding, or
labor controversy of the type described in SECTION 3.1(i), notice thereof;

                           (c)      immediately upon becoming aware of the
institution of any steps by Midwest to terminate any Pension Plan (other than a
standard termination under ERISA Section 4041(b)), or the failure to make a
required contribution to any Pension Plan if such failure is sufficient to give
rise to a Lien under Section 302(f) of ERISA or Section 412 of the Code, or the
taking of any action with respect to a Pension Plan which could result in the
requirement that Midwest furnish a bond or other security to the PBGC or such
Pension Plan, or the occurrence of any event with respect to any Pension Plan
which could result in the incurrence by Midwest or any member of the Controlled
Group of any material liability (other than liabilities incurred in the
ordinary course of maintaining the Pension Plan), fine or penalty, or any
increase in the contingent liability of Midwest with respect to any post-retire-
ment Welfare Plan benefit, the occurrence or expected occurrence of any
Reportable Event or the termination, Reorganization or Insolvency of any
Multiemployer Plan or the complete or partial withdrawal by Midwest or any
member of the Controlled

                                        41

<PAGE>

Group from a Multiemployer Plan, notice thereof and copies of all documentation
relating thereto;

                           (d)      as soon as possible and in any event within
five Business Days after any Authorized Officer of Midwest obtains knowledge of
the occurrence thereof, notice that any Governmental Authority may revoke, or
refuse to grant or renew, or materially modify, any material Governmental
Approval described in SECTION 3.1(c);

                           (e)      promptly following any request therefor,
such other information regarding the operations, business affairs and financial
condition of Midwest, or compliance with the terms of this Agreement or the
other Operative Documents, as the Owner Trustee, the Owner Lessor, the Owner
Participant and, for so long as the Lien of the Lease Indenture has not been
terminated or discharged, the Lease Indenture Trustee and the Pass Through
Trustees may reasonably request;

                           (f)      immediately upon becoming aware of any
change in operations of Midwest that would cause Midwest to fail to qualify for
EWG status or to lose exemption from regulation under PUHCA; and

                           (g)      concurrently with the delivery of any
notice, report, request, demand, certificate, financial statement or other
instrument to the Owner Lessor pursuant to the Facility Lease (but without
duplication of deliveries required under SECTION 5.1(a)), for so long as the
Lien of the Lease Indenture has not been terminated or discharged, Midwest
shall furnish a copy of the same to the Lease Indenture Trustee and the Pass
Through Trustees.

         SECTION 5.2       FINANCIAL INFORMATION. Midwest shall caused to be
delivered to the Owner Trustee, the Owner Lessor, the Owner Participant, and
for as long as the Lien of the Lease Indenture has not been terminated or
discharged, the Lease Indenture Trustee and the Pass Through Trustees:

                           (a)      as soon as available and in any event
within 60 days after the end of each of the first three Fiscal Quarters of each
Fiscal Year of Midwest, consolidated balance sheets of Midwest (which will
include results for its Consolidated Subsidiaries) as of the end of such
Fiscal Quarter and consolidated statements of income and cash flows of Midwest
(which will include results for its Consolidated

                                        42

<PAGE>

Subsidiaries) for such Fiscal Quarter and for the period commencing at the end
of the previous Fiscal Year and ending with the end of such Fiscal Quarter;

                           (b)      as soon as available and in any event
within 120 days after the end of each Fiscal Year of Holdings, commencing with
the 1999 Fiscal Year, a copy of the annual audited report for such Fiscal Year
for Holdings (which will include results for its Consolidated Subsidiaries),
including therein consolidated balance sheets of Holdings (which will include
results for its Consolidated Subsidiaries) as of the end of such Fiscal Year
and consolidated statements of income and cash flows of Holdings (which will
include results for its Consolidated Subsidiaries) for such Fiscal Year, and
accompanied by the opinion of Arthur Andersen & Co. or other internationally
recognized independent auditors selected by Holdings, which report shall state
that such consolidated financial statements present fairly in all material
respects the financial position for the periods indicated in conformity with
GAAP applied on a basis consistent with prior periods, PROVIDED HOWEVER, that
in the event annual audited report of Midwest becomes and for as long as it
continues to be available, information delivery requirements of this Section
5.2(b) shall be deemed to refer to such annual audited report of Midwest and
not Holdings;

                           (c)      concurrently with the delivery of the
financial statements referred to in Section 5.2(b) hereof, Midwest shall
deliver an Officer's Certificate of Midwest stating that (i) the signer has
made, or caused to be made under its supervision, a review of this Agreement
and the other Operative Documents; and (ii) such review has not disclosed the
existence during such fiscal year (and the signer does not have knowledge of
the existence as of the date of such certificate) of any condition or event
constituting a Lease Event of Default or an Event of Loss or, if any such
condition or event existed or exists, specifying the nature thereof, the period
of existence thereof and what action Midwest has taken or proposes to take with
respect thereto;

                           (d)      as soon as available, one copy of any
documents filed by Midwest with the Securities and Exchange Commission or any
successor agency pursuant to Section 13(a), 13(c), 14 or 15(d) (or any
successor sections) of the Securities Exchange Act of 1934, as amended (the
"EXCHANGE ACT");

                           (e)      within ten Business Days after each
anniversary of the Closing Date, a certificate from Midwest's insurers or
insurance agents evidencing

                                        43

<PAGE>

that the insurance policies in place satisfy the requirements of the Operative
Documents;

                           (f)      as soon as possible and in any event within
five Business Days after any Authorized Officer of Midwest obtains (i)
knowledge of the occurrence thereof, notice of any casualty, damage or loss to
the Facility, whether or not insured, through fire, theft, other hazard or
casualty, involving a probable loss of $5,000,000 or more or (ii) knowledge of
(A) the occurrence, notice of any cancellation, notice of threatened or
potential cancellation or (B) any material change in the terms, coverage or
amounts of any policy of insurance which would result in such policy deviating
from Prudent Industry Practice.

         SECTION 5.3       INFORMATION CONCERNING THE FACILITY. Concurrently
with the delivery of the financial statements referred to in SECTION 5.2(b),
Midwest shall furnish the Owner Trustee, the Owner Lessor, the Owner
Participant and, for so long as the Lien of the Lease Indenture has not been
terminated or discharged, the Lease Indenture Trustee and the Pass Through
Trustees and their respective authorized representatives either: (i) the annual
report provided to senior management and shareholders of Midwest or its
Affiliates, and (ii) a report for the preceding calendar year with respect to
the Facility, in each case, covering the following matters: (A) production,
including availability, output, planned outages and unplanned outages (and the
reason for such unplanned outages); (B) environmental matters; (C) health and
safety matters, to the extent the same shall have given rise to material claims
against Midwest or the Guarantor or any of its Subsidiaries; (D) significant
plant activities, such as major plant overhauls, Alterations, modifications and
other capital expenditures, significant changes in plant operations and major
operating incidents; and (E) markets activities, including quantities and
average price of energy and capacity delivered.

         SECTION 5.4       MAINTENANCE OF EXISTENCE; CONDUCT OF BUSINESS.
Midwest shall continue to engage in the business of owning and operating the
Facility and the sale and marketing of wholesale electric power and other
products and services related thereto, and preserve, renew and keep in full
force and effect its limited liability company existence and take all
reasonable action to maintain all material rights, privileges and franchises
necessary or desirable in the normal conduct of its business, except, in each
case, as otherwise permitted by SECTIONS 6.1 OR 6.2.

                                        44

<PAGE>

         SECTION 5.5       COMPLIANCE WITH REQUIREMENTS OF LAW AND CONTRACTUAL
OBLIGATIONS. Midwest shall comply with all Requirements of Law and Contractual
Obligations, such compliance to include the payment, before the same become
delinquent, of all taxes, assessments and governmental charges or levies,
except to the extent such non-compliance would not result in a Material Adverse
Effect on Midwest.

         SECTION 5.6       ENVIRONMENTAL COVENANT WITH RESPECT TO THE FACILITY
AND THE FACILITY SITE. Midwest shall:

                           (a)      comply, and make all reasonable efforts to
cause other Persons to comply, with all applicable Environmental Laws and
obtain, comply with and maintain all necessary Governmental Approvals required
under any applicable Environmental Law in connection with the use, operation
and maintenance of the Facility and the Facility Site, in each case, except
where such noncompliance or failure, individually or in the aggregate, could
not reasonably be expected to result in a Material Adverse Effect on Midwest;

                           (b)      promptly upon the request of the Owner
Trustee, the Owner Lessor, the Owner Participant or, for so long as the Lien of
the Lease Indenture has not been terminated or discharged, the Lease Indenture
Trustee or the Pass Through Trustees, if there has been a Lease Event of
Default which has not been fully and timely cured, arrange for, and EME shall
be responsible for all costs and expenses incurred in connection with, the
environmental surveys in accordance with the terms of SECTION 5.2(f) of the
Facility Lease.

                           (c)      provide copies of such information to
evidence compliance with this SECTION 5.6 as the Owner Trustee, the Owner
Lessor, the Owner Participant or, for so long as the Lien of the Lease
Indenture has not been terminated or discharged, the Lease Indenture Trustee
and the Pass Through Trustees, may reasonably request from time to time.

         SECTION 5.7       FURTHER ASSURANCES. Upon written request of the
Owner Trustee, the Owner Lessor, the Owner Participant, or, for so long as the
Lien of the Lease Indenture has not been terminated or discharged, the Lease
Indenture Trustee or the Pass Through Trustees, Midwest shall promptly perform
or cause to be performed any and all acts and execute or cause to be executed
any and all docu-

                                        45

<PAGE>

ments (including financing statements and continuation statements) for filing
under the provisions of the Uniform Commercial Code or any other Requirement of
Law which are necessary or advisable to preserve, protect and perfect the
ownership of the Undivided Interest and the interest of the Owner Lessor in the
Facility Site Lease and to maintain the first priority Lien intended to be
created by the Lease Indenture therein.

         SECTION 5.8       ACCESS. A portion of the access to the Facility Site
and the Facility is made available pursuant to that certain Easement dated
December 16, 1999 between ComEd, as grantor, and Midwest, as grantee, which
Easement was recorded December 22, 1999 in Tazewell County, Illinois as
Document No. 9931148 (the "ACCESS EASEMENT"). The Access Easement is subject to
the lien of the Mortgage dated July 1, 1923 made by ComEd, as mortgagor, to
predecessor Trustees of Harris Trust and Savings Bank and D.G. Donovan
Trustees, as mortgagee, which Mortgage was supplemented from time to time, the
most recent of which was recorded June 11, 1974 in Tazewell County, Illinois as
Document No. 1033-124 (the "ComEd Mortgage"). In the event that access to the
Facility Site and the Facility shall be denied as a result of the foreclosure
of the ComEd Mortgage, Midwest shall do or cause to be done whatever is
necessary to provide sufficient access to the Facility Site and the Facility.

SECTION VI  NEGATIVE COVENANTS OF MIDWEST

         Midwest covenants and agrees that it will perform the obligations set
forth in this SECTION 6.

         SECTION 6.1       MERGER AND CONSOLIDATION. Midwest shall not
consolidate or merge with any other Person (unless it is the surviving entity)
or sell, transfer or otherwise dispose of all or substantially all of its
assets in one or a series of transactions, unless (i) no Lease Event of
Default shall have occurred and be continuing prior to and after giving effect
to such merger, consolidation or sale, (ii) the entity resulting from such
consolidation, surviving such merger or to whom such assets are transferred
shall (a) be a corporate entity (including a limited liability company)
organized under the laws of the United States of America, any state thereof or
the District of Columbia, and (b) expressly assume, pursuant to an agreement
reasonably acceptable to the other Lease Financing Parties, each obligation of
Midwest under the Operative Documents, (iii) the Owner Participant shall have
received an opinion

                                        46
<PAGE>

reasonably satisfactory to it from Hunton & Williams, or from a nationally
recognized tax counsel selected by the Owner Participant and reasonably
acceptable to Midwest to the effect that such consolidation, merger or sale of
assets would not result in any material indemnified, or any unindemnified,
incremental tax risk to the Owner Participant, (iv) the Owner Participant and,
so long as the Lessor Notes are outstanding, the Lease Indenture Trustee and
Pass Through Trustees, shall have received an opinion of counsel reasonably
satisfactory to each such Person (y) with respect to the agreement referred to
in the immediately preceding clause (ii) (b) and (z) addressing other customary
matters, (v) after giving effect to such transaction (A) while the Certificates
are outstanding, the ratings of the Certificates shall be equal to or greater
than the ratings of the Certificates immediately prior to consummating such
transaction and (B) if the Certificates are no longer outstanding, the credit
rating of the long-term senior unsecured indebtedness of Midwest or any
successor or surviving entity shall be equal to or greater than the credit
rating of the long-term senior unsecured indebtedness of Midwest immediately
prior to consummating such transaction and, (vi) for as long as the EME
Guarantees are in effect, EME shall have delivered written affirmations of its
obligations under the EME Guarantees to the beneficiaries of the EME
Guarantees. Midwest shall not sell more than 50% of its assets without the
prior written consent of the Owner Lessor and, for as long as the Lessor Notes
are outstanding, the Lease Indenture Trustee and the Pass Through Trustees
which consent shall not be unreasonably withheld, PROVIDED, HOWEVER, that such
consent shall not be required in connection with such sale or disposition if
(x) the Certificates are rated at least Baa3 by Moody's and BBB- by S&P taking
into account such sale of assets or (y) if the Certificates are no longer
outstanding, the long-term senior unsecured indebtedness of Midwest is rated at
least Baa3 by Moody's and BBB- by S&P taking into account such sale of assets.

         SECTION 6.2       CHANGES IN LEGAL FORM OR BUSINESS. Midwest shall not
change its legal form or Organic Documents except as permitted by SECTION 6.1,
change its Fiscal Year or engage in any business other than the construction,
ownership, maintenance and operation of the Generating Assets, the sale of
wholesale electric power therefrom and related products and services and such
other business as may be reasonably incidental thereto.

                                        47

<PAGE>

SECTION VII  AFFIRMATIVE COVENANTS OF EME

         EME covenants and agrees that it will perform the obligations set
forth in this SECTION 7.

         SECTION 7.1       FINANCIAL INFORMATION, REPORTS, NOTICES. EME shall
furnish to the Owner Trustee, the Owner Lessor, the Owner Participant and, for
as long as the Lien of the Lease Indenture Trustee has not been terminated or
discharged, the Lease Indenture Trustee and the Pass Through Trustees:

                           (a)      as soon as available and in any event
within 60 days after the end of each of the first three Fiscal Quarters of each
Fiscal Year of EME, consolidated balance sheets of EME (which will include
results for its Consolidated Subsidiaries) as of the end of such Fiscal Quarter
and consolidated statements of income and cash flows of EME (which will include
results for its Consolidated Subsidiaries) for such Fiscal Quarter and for the
period commencing at the end of the previous Fiscal Year and ending with the
end of such Fiscal Quarter, certified by an Authorized Officer of EME with
responsibility for financial matters;

                           (b)      as soon as available and in any event
within 120 days after the end of each Fiscal Year of EME, a copy of the annual
audited report for such Fiscal Year for EME (which will include results for its
Consolidated Subsidiaries), including therein consolidated balance sheets of
EME (which will include results for its Consolidated Subsidiaries) as of the
end of such Fiscal Year and consolidated statements of income and cash flows of
EME (which will include results for its Consolidated Subsidiaries) for such
Fiscal Year, and accompanied by the opinion of Arthur Andersen & Co. or other
internationally recognized independent auditors selected by EME, which report
shall state that such consolidated financial statements present fairly in all
material respects the financial position for the periods indicated in
conformity with GAAP applied on a basis consistent with prior periods;

                           (c)      for so long as any Certificates remain
outstanding, unless EME is at the time subject to the reporting requirements of
Section 13(a) or 15(d) of the Exchange Act, to holders of Certificates,
Certificate Owners (as defined in the Pass Through Trust Agreements) and
prospective investors, upon their request,

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the information required to be delivered pursuant to Rule 144A(d)(4) under
the Securities Act;

                           (d)      following the effectiveness of any
registration statement pursuant to the Registration Rights Agreement, whether
or not required by the rules and regulations of the Securities and Exchange
Commission (the "SEC"), EME shall maintain its status as a reporting company
under the Exchange Act and file a copy of all such information and reports with
the SEC for public availability within the time periods specified in the SEC's
rules and regulations (unless the SEC will not accept such a filing) and make
such information available to the Lease Financing Parties upon request, unless
otherwise provided in the Operative Documents and so long as the requirements
of SECTION 3.4 of the Facility Lease are complied with;

                           (e)      concurrently with the delivery of the
financial statements referred to in SECTION 7.1(a), a certificate, executed by
an Authorized Officer of EME with responsibility for financial matters, showing
(in reasonable detail and with appropriate calculations and computations in all
respects satisfactory to the Owner Lessor and, for so long as the Lien of the
Lease Indenture has not been terminated or discharged, the Lease Indenture
Trustee and the Pass Through Trustees) compliance with the financial covenant
set forth in SECTION 4.09 of the EME OP Guarantee;

                           (f)      as soon as possible and in any event within
five Business Days after any Authorized Officer of EME obtains knowledge of the
occurrence of (i) each Lease Event of Default or (ii) any default under any
other material agreement to which EME or any of its subsidiaries is a party or
any termination thereof, if such event could reasonably be expected to result
in a Material Adverse Effect on EME, in each case, together with a statement of
such Authorized Officer setting forth details of such Default, default or
termination and the action which EME or such subsidiary of EME has taken and
proposes to take with respect thereto;

                           (g)      as soon as possible and in any event within
five Business Days after (i) the occurrence of any material adverse development
with respect to any litigation, action, proceeding, or labor controversy of the
type described in SECTION 3.2(h) or (ii) the commencement of any labor
controversy, litigation, action, proceeding of the type described in SECTION
3.2(h) hereof, notice

                                       49
<PAGE>

thereof and, upon request of the Owner Lessor and, for so long as the Lien of
the Lease Indenture has not been terminated or discharged, the Lease Indenture
Trustee and the Pass Through Trustees, copies of all non-privileged
documentation relating thereto;

                           (h)      immediately upon becoming aware of the
institution of any steps by EME or any other Person to terminate any Pension
Plan (other than a standard termination under ERISA Section 4041(b)), or the
failure to make a required contribution to any Pension Plan if such failure is
sufficient to give rise to a Lien under Section 302(f) of ERISA or Section 412
of the Code, or the taking of any action with respect to a Pension Plan which
could result in the requirement that EME furnish a bond or other security to
the PBGC or such Pension Plan, or the occurrence of any event with respect to
any Pension Plan which could result in the incurrence by EME or any member of
the Controlled Group of any material liability (other than liabilities incurred
in the ordinary course of maintaining the Pension Plan), fine or penalty, or
any increase in the contingent liability of EME with respect to any
post-retirement Welfare Plan benefit, which has a Material Adverse Effect on
EME notice thereof and copies of all documentation relating thereto;

                           (i)      as soon as known, any changes in EME's Debt
Rating by Moody's or S&P or any other rating agency which maintains a Debt
Rating on EME;

                           (j)      promptly following any request therefor,
such other information regarding the operations, business affairs and financial
condition of EME, or compliance with the terms of this Agreement or the other
Operative Documents, as Owner Lessor, the Owner Participant, the Lease
Indenture Trustee or the Pass Through Trustees may reasonably request.

         SECTION 7.2       MAINTENANCE OF CORPORATE EXISTENCE. Subject to the
provisions of SECTION 8.2 hereof, EME shall at all times preserve and maintain
in full force and effect (i) its corporate existence and good standing under
the laws of the State of California and (ii) its qualification to do business
in each other jurisdiction in which the character of its properties or the
nature of its activities make such qualification necessary, except where the
failure to be so qualified would not reasonably be expected to result in a
Material Adverse Effect with respect to EME.

                                       50
<PAGE>

         SECTION 7.3       FURTHER ASSURANCES. Upon written request of the
Owner Lessor, the Owner Participant, and, for so long as the Lien of the Lease
Indenture has not been terminated or discharged, the Lease Indenture Trustee
and the Pass Through Trustees, EME shall promptly perform or cause to be
performed any and all acts and execute or cause to be executed any and all
documents (including, financing statements and continuation statements) for
filing under the provisions of the Uniform Commercial Code or any other
Requirement of Law which are necessary or advisable to preserve, protect and
perfect the ownership of the Undivided Interest and the interest of the Owner
Lessor in the Ground Lease and to maintain the first priority Lien intended to
be created by the Lease Indenture therein.

         SECTION 7.4       TAXES. EME shall, prior to the time penalties attach
thereto, (i) file, or cause to be filed, all tax and information returns that
are required to be, or are required to have been, filed by it in any
jurisdiction, and (ii) pay or cause to be paid all taxes shown to be, or to
have been, due and payable on such returns and all other taxes lawfully imposed
and payable by it, except to the extent there is a Good Faith Contest thereof
by EME.

SECTION VIII  NEGATIVE COVENANTS OF EME

         SECTION 8.1       LIENS. EME shall not pledge, mortgage or
hypothecate, or permit to exist, any mortgage, pledge or other lien upon any
property at any time directly owned by EME to secure any EME Indebtedness,
without making effective provisions whereby the EME Guarantees shall be equally
and ratably secured with any and all such EME Indebtedness and with any other
EME Indebtedness similarly entitled to be equally and ratably secured;
provided, however, that this restriction shall not apply to or prevent the
creation or existence of (i) liens existing on the Closing Date, (ii) purchase
money liens not to exceed the cost or value of the purchased property, (iii)
other liens not to exceed 10 percent of EME's Consolidated Tangible Net Assets,
and (iv) liens granted in connection with extending, renewing, replacing or
refinancing, in whole or in part, EME Indebtedness (including, without
limitation, increasing the principal amount of such EME Indebtedness) secured
by liens described in the foregoing clauses (i) through (iii). In the event
that EME proposes to pledge, mortgage or hypothecate any property at any time
directly owned by it to secure any EME Indebtedness, other than as permitted by
clauses (i) through (iv) of the previous paragraph, EME shall give prior
written notice thereof to the Owner Trust, the Lease Indenture Trustee and the
Pass Through Trustees, and EME

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<PAGE>

shall, prior to or simultaneously with such pledge, mortgage or
hypothecation, effectively secure all the EME Guarantees equally and ratably
with such EME Indebtedness.

         SECTION 8.2      CONSOLIDATION, MERGER; ASSET DISPOSITION.

                           (a)      EME shall not merge or consolidate with
or into any other person and EME shall not sell, lease or convey all or
substantially all of its assets to any person, unless (1) EME is the
continuing corporation, or the successor corporation or the person that
acquires all or substantially all of EME's assets is a corporation organized
and existing under the laws of the United States or a State thereof or the
District of Columbia and expressly assumes all EME's obligations under the
EME Guarantees, the Participation Agreement and the other Operative Documents
to which EME is a party, (2) immediately after such merger, consolidation,
sale, lease or conveyance, there is no default or Lease Event of Default
under the Lease Financing Documents, (3) if, as a result of the merger,
consolidation, sale, lease or conveyance, any or all of EME's property would
become the subject of a lien that would not be permitted by this Agreement,
EME secures the EME Guarantees equally and ratably with the obligations
secured by that lien and (4) EME delivers or causes to be delivered to the
Owner Trust, the Owner Participant and as long as the Lien of the Lease
Indenture has not been terminated or discharged, the Lease Indenture Trustee
and the Pass Through Trustees an Officers' Certificate and an opinion of
legal counsel, each stating that the merger, consolidation, sale, lease or
conveyance comply with this Agreement and each in a form reasonably
acceptable to the Owner Trust and Lease Indenture Trustee.

                           (b)      Except for the sale of the properties and
assets of EME substantially as an entirety pursuant to subsection (a) above,
and other than assets required to be sold to conform with governmental
regulations, EME shall not sell or otherwise dispose of any assets (other than
short-term, readily marketable investments purchased for cash management
purposes with funds not representing the proceeds of other assets sales) if, on
a pro forma basis, the aggregate net book value of all such sales during the
most recent 12-month period would exceed 10 percent of EME's Consolidated Net
Tangible Assets computed as of the end of the most recent fiscal quarter
preceding such sale; provided, however, that any such sales shall be
disregarded for purposes of this 10 percent limitation if the proceeds are
invested in assets in similar or related lines of business of EME and, provided
further, that EME

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<PAGE>

may sell or otherwise dispose of assets in excess of such 10 percent
limitation if the proceeds from such sales or dispositions, which are not
reinvested as provided above, are retained by EME as cash or cash equivalents
or are used by EME to reduce or retire EME Indebtedness ranking pari passu in
right of payment to the EME Guarantees or indebtedness of EME's Subsidiaries.

         SECTION 8.3       AMENDMENT, WAIVER OR ASSIGNMENT OF CERTAIN
DOCUMENTS. EME shall not, and shall not permit any of its Subsidiaries to
terminate, amend, supplement or otherwise modify any ComEd Agreement (i) in any
materially adverse manner with respect to its term, offtake requirement or
payment provision (ii) in a manner which would result in renewal or extension
of the ComEd Agreements or which would otherwise limit in any way the Owner
Lessor's or, for so long as the Lien of the Lease Indenture has not been
terminated or discharged, the Lease Indenture Trustee's rights in respect of
the Undivided Interest or (iii) otherwise in a manner which would result in a
Material Adverse Effect on Midwest or the Owner Lessor or the Lease Indenture
Trustee, as the case may be, without the prior written consent of the Owner
Lessor or the Lease Indenture Trustee, as the case may be, which consent shall
not be unreasonably withheld or delayed.

SECTION IX   COVENANTS OF THE TRUST COMPANY, THE OWNER
             TRUSTEE AND THE OWNER LESSOR

         SECTION 9.1       COMPLIANCE WITH THE TRUST AGREEMENT. Each of the
Owner Lessor, the Trust Company and the Owner Trustee hereby severally
covenants and agrees severally and as to itself only that it will:

                           (a)      comply with all of the terms of the Trust
Agreement applicable to it; and

                           (b)      not amend, supplement, or otherwise
modify SECTION 9.01, SECTION 10.01 or SECTION 10.02 of the Trust Agreement
without the prior written consent of Midwest so long as no Material Lease
Default or Lease Event of Default has occurred and is continuing or the Lease
Indenture Trustee so long as the Lessor Notes are outstanding.

                                        53
<PAGE>

         SECTION 9.2       OWNER LESSOR'S LIENS. The Trust Company, the Owner
Trustee and the Owner Lessor each covenants severally and as to itself only
that it will not directly or indirectly create, incur, assume or suffer to
exist any Owner Lessor's Lien attributable to it and unrelated to the
transactions contemplated hereby and will promptly notify in writing Midwest,
EME, the Owner Participant and, for so long as the Lien of the Lease Indenture
has not been terminated or discharged, the Lease Indenture Trustee and the Pass
Through Trustees of the imposition of any such Lien of which it has actual
knowledge and shall promptly, at its own expense, take such action as may be
necessary to duly discharge such Owner Lessor's Lien attributable to it.

         SECTION 9.3       AMENDMENTS TO OPERATIVE DOCUMENTS. The Owner Trustee
and the Trust Company each covenants severally and as to itself only that it
will not unless such action is expressly contemplated by the Operative
Documents, or with respect to the Owner Trustee and the Owner Lessor, unless it
is expressly directed by the Owner Participant in writing, (a) through its own
action terminate any Operative Document to which it is a party, (b) amend,
supplement, waive or modify (or consent to any such amendment, supplement,
waiver or modification) any Operative Document (other than the Trust
Agreement, amendments to and modifications of which are governed by SECTION 9.1
hereof) in any manner other than with respect to administrative or ministerial
matters or (c) except as provided in SECTION 14.2 hereof, take any action to
prepay or refund the Lessor Notes or amend any of the payment terms of the
Lessor Notes without, in each case, the prior written consent of Midwest so
long as no Material Lease Default or Lease Event of Default shall have occurred
and be continuing and, in the case of clause (a) or (b), the Lease Indenture
Trustee and the Pass Through Trustees as long as the Lien of the Lease
Indenture has not been terminated or discharged.

         SECTION 9.4       TRANSFER OF THE OWNER LESSOR'S INTEREST. Other than
as contemplated by the Operative Documents, each of the Owner Lessor and the
Owner Trustee covenants severally and as to itself only that it will not
assign, pledge, sell, lease, convey or otherwise transfer any of its then
existing right, title or interest in and to the Owner Lessor's Interest, the
Trust Estate or the other Operative Documents without the consent of Midwest
and, so long as the Lessor Notes are outstanding, the Lease Indenture Trustee,
which consent may not be unreasonably withheld. Nothing in this SECTION 9.4
shall limit the ability of the Owner Trustee or the Owner

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<PAGE>

Participant to appoint a successor Owner Trustee pursuant to SECTION 9 of the
Trust Agreement.

         SECTION 9.5       OWNER LESSOR; TRUST ESTATE. Each of the Owner
Trustee and the Owner Lessor covenants severally and as to itself only that it
will not voluntarily take any action to subject the Owner Lessor or the Trust
Estate to the provisions of any applicable bankruptcy or insolvency law (as now
or hereafter in effect).

         SECTION 9.6       LIMITATION ON INDEBTEDNESS AND ACTIONS. Each of the
Owner Trustee and the Owner Lessor covenants severally and as to itself only
that it will not incur any indebtedness nor enter into any business or activity
except as required or expressly permitted or contemplated by any Operative
Document.

         SECTION 9.7       CHANGE OF LOCATION. The Owner Trustee shall use all
reasonable efforts to give the Owner Participant, the Lease Indenture Trustee,
the Pass Through Trustees, Midwest and EME 30 days' written notice of any
relocation of the Owner Trustee's chief executive office or the place where
documents and records relating to the Owner Trustee or the Trust Estate are
kept from the location set forth in SECTION 3.3(j) and of any change in its
name, but in any event the Owner Trustee and the Owner Lessor shall give such
notice within 30 days after such relocation or name change.

         SECTION 9.8       BANKRUPTCY OF TRUST. Each of the Trust Company, the
Owner Trustee and the Owner Lessor hereby agrees severally and as to itself
only that it shall not voluntarily take any action that shall, or cause any
action to be taken that is intended to, submit the Owner Lessor, as debtor, to
any proceeding under any Requirement of Law involving bankruptcy, insolvency,
reorganization or other laws affecting the rights of creditors generally unless
a Lease Event of Default or a Material Lease Default shall have occurred and be
continuing (in which case, if the Lien of the Lease Indenture shall not have
been discharged, the Trust Company or the Owner Lessor shall not take such
action unless the Lease Indenture Trustee shall have given its prior written
consent to such action in its sole discretion).

         SECTION 9.9       COMED CONSENT. The Owner Lessor and its successors
and assigns, as the case may be, agree not to invoice ComEd pursuant to the
ComEd Consent prior to exercise of remedies by the Owner Lessor or its
successors and assigns under the Facility Lease. Following such exercise of
remedies by the Owner

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<PAGE>

Lessor or its successors and assigns, as the case may be, the Owner Lessor
and its successors and assigns hereby agree to cooperate with Midwest in
preparing invoices under the Power Purchase Agreement with respect to
electrical output of the Facility equal to the Undivided Interest Percentage.

SECTION X           COVENANTS OF THE OWNER PARTICIPANT

         SECTION 10.1      RESTRICTIONS ON TRANSFER OF BENEFICIAL INTEREST.

                           (a)      The Owner Participant covenants and
agrees that it shall not during the Facility Lease Term assign, convey or
transfer any of its right, title or interest in the Beneficial Interest
without the prior written consent of Midwest and, so long as the Lien of the
Lease Indenture has not been terminated or discharged, without the prior
written consent of the Lease Indenture Trustee and the Pass Through Trustees;
PROVIDED, HOWEVER, that the Owner Participant may assign, convey or transfer
all or any part of its interest in the Beneficial Interest without such
consent to a Person (the "TRANSFEREE") which shall assume the duties and
obligations of the Owner Participant under the Operative Documents with
respect to the interest being transferred pursuant to an Assignment and
Assumption Agreement substantially in the form of Exhibit LL hereto, if each
of the following conditions shall have been satisfied:

                                    (i)     Midwest, EME, the Owner Trustee and,
         so long as the Lien of the Lease Indenture has not been terminated or
         discharged, the Lease Indenture Trustee and the Pass Through Trustees
         shall have received an opinion of counsel, which opinion and counsel
         are reasonably satisfactory to each recipient thereof, to the effect
         that such Assignment and Assumption Agreement is a legal, valid and
         binding obligation of, and is enforceable against, each party thereto,
         that all regulatory approvals required in connection with such transfer
         or necessary to assume the Owner Participant's obligations under the
         Operative Documents shall have been obtained and that the proposed
         transfer of the Beneficial Interest will not require registration the
         Securities Act;

                                    (ii)     the Transferee shall be a "United
         States person" within the meaning of Section 7701(a)(30) of the Code;

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<PAGE>

                                    (iii)  the Transferee or a guarantor of such
         Transferee meets the following criteria: (1) the Consolidated Tangible
         Net Assets of at least equal to $75 million calculated in accordance
         with GAAP, (2) agrees to be bound by the terms of the Operative
         Documents pursuant to an Assumption and Assignment Agreement
         substantially in the form of Exhibit LL hereto, and (3) so long as no
         Lease Event of Default shall have occurred and be continuing, such
         Transferee is not a Competitor of, or in material litigation with,
         Midwest or any Affiliate of Midwest, unless waived by Midwest;

                                    (iv)     the transferring Owner Participant
         shall pay, without any right of indemnification from Midwest or any
         other Person, all reasonable documented out-of-pocket costs, fees and
         expenses incurred in connection with any such transfer by (x) the other
         Lease Financing Parties, except Midwest and EME, and (y) Midwest and
         EME, so long as no Lease Event of Default shall have occurred and be
         continuing; and

                                    (v)      following such transfer, there
         shall be not more than two Owner Participants with interests (Undivided
         Interests or beneficial trust interests) in the Facility.

                           (b)      For purposes of the preceding clause (a),
a "COMPETITOR" of Midwest shall be an entity (other than an entity which on
the Closing Date is Other Owner Participant or an Affiliate thereof) which,
or an Affiliate of which, is significantly involved as a seller or trader of
capacity or energy in the electricity market; PROVIDED that, the foregoing
restriction shall not apply in the case of a Transferee that is an Affiliate
of such a seller or trader so long as (i) such Transferee is an entity
involved in making passive investments such as the Owner Participant's
contemplated investment in this transaction, (ii) such Transferee has in
place procedures which shall be reasonably acceptable to Midwest to prevent
such Affiliate that is a seller or trader of capacity from acquiring
confidential information relating to such passive investments and agrees in
writing with Midwest to maintain and abide by such procedures, and (iii)
neither such Transferee nor any Affiliate thereof is an entity that is (x)
actively involved in the generation of electricity in Mid-American
Interconnected Network and/or the East Central Reliability Council or any

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<PAGE>

successor thereto, or (y) on the List of Competitors, attached hereto as
Exhibit MM, which may, from time to time, but no more often than once per
year, be modified by Midwest, and shall contain a list of up to six entities
(including Affiliates) which Midwest reasonably believes in its good faith
judgment are Competitors of Midwest. Notwithstanding the foregoing, the
restrictions set forth in clause (i) or (iii)(1) and (iii)(3) of SECTION
10.1(a) above shall not inure to the benefit of Midwest if such transfer is
in connection with the exercise of remedies during a Lease Event of Default.

                           (c)      Neither Midwest nor EME shall be
responsible for any adverse tax consequence to the Owner Lessor or the Owner
Participant resulting from any transfer pursuant to this SECTION 10.1 and the
Pricing Assumptions (as set forth on SCHEDULE 10.1(c) hereto) shall not be
changed as a result of any such transfer except if such transfer is in
connection with the exercise of remedies during a Lease Event of Default.

                           (d)      The Owner Participant shall give the
Owner Lessor, the Owner Trustee, the Lease Indenture Trustee, the Pass
Through Trustees, EME and Midwest 30 days' prior written notice of such
transfer, or 10 days in the case of a transfer to an Affiliate of the Owner
Participant, specifying the name and address of any proposed Transferee and
such additional information as shall be necessary to determine whether the
proposed transfer satisfies the requirements of this SECTION 10.1. If
requested by the Owner Participant, the Lease Indenture Trustee or any Pass
Through Trustee, Midwest shall acknowledge qualifying transfers.

                           (e)      Upon any such transfer in compliance with
this SECTION 10.1, (i) such Transferee shall, to the extent of the Beneficial
Interest conveyed to the Transferee, (x) be deemed the "Owner Participant"
for all purposes, and (y) enjoy the rights and privileges and perform the
obligations of the Owner Participant hereunder and under the Assignment and
Assumption Agreement, the Owner Participant Guaranty and each other Operative
Document to which such Owner Participant is a party, and each reference in
this Agreement, the Assignment and Assumption Agreement, the Owner
Participant Guaranty and each other Operative Document to the "Owner
Participant" shall thereafter be deemed to include such Transferee, to the
extent of the Beneficial Interest conveyed to the Transferee, for all
purposes and (ii) the transferor Owner Participant and the Guarantor, if any,
of such transferor Owner Participant's obligations shall be released from all
obligations hereunder and under

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<PAGE>

each other Operative Document to which such transferor or Guarantor is a
party or by which such transferor Owner Participant or Guarantor is bound to
the extent such obligations are expressly assumed by a Transferee; PROVIDED,
HOWEVER, that in no event shall any such transfer waive or release the
transferor or its Guarantor from any liability existing immediately prior to
or occurring simultaneously with such transfer.

         SECTION 10.2      OWNER PARTICIPANT'S LIENS. The Owner Participant
covenants that it will not directly or indirectly create, incur, assume or
suffer to exist any Owner Participant's Lien and the Owner Participant shall
promptly notify Midwest, EME, the Lease Indenture Trustee and the Pass Through
Trustees, in writing of the imposition of any such Lien of which the Owner
Participant has actual knowledge and shall promptly, at its own expense, take
such action as may be necessary to duly discharge such Owner Participant's Lien.

         SECTION 10.3      AMENDMENTS OR REVOCATION OF TRUST AGREEMENT. The
Owner Participant covenants that it will not (a) amend, supplement, or
otherwise modify SECTION 9.01, SECTION 10.01 or SECTION 10.02 of the Trust
Agreement except for amendments required by the Operative Documents or by
Requirement of Law or which are administrative or ministerial in nature without
the prior written consent of Midwest so long as no Material Lease Default or
Lease Event of Default has occurred and is continuing, and without the prior
written consent of the Lease Indenture Trustee and the Pass Through Trustees,
so long as the Lien of the Lease Indenture has not been terminated or
discharged, or (b) revoke, or otherwise waive compliance with or terminate the
Trust Agreement without the prior written consent of Midwest so long as no
Material Lease Default or Lease Event of Default has occurred and is
continuing, and the Lease Indenture Trustee so long as the Lien of the Lease
Indenture has not been terminated or discharged.

         SECTION 10.4      PROHIBITION ON FUNDAMENTAL CHANGES. The Owner
Participant shall not change its form of organization and shall not enter into
or engage in any business other than as contemplated by the Operative Documents
and the activities related thereto.

         SECTION 10.5      BANKRUPTCY FILINGS. The Owner Participant agrees
that it will not file a petition, or join in the filing of a petition, seeking
reorganization, arrangement, adjustment or composition of, or in respect of,
the Owner Lessor under the

                                        59
<PAGE>

Bankruptcy Code, or any other applicable Federal or state law or the law of
the District of Columbia.

         SECTION 10.6      INSTRUCTIONS. The Owner Participant agrees that it
will not instruct the Owner Lessor to take any action prohibited by this
Agreement or any other Operative Document.

         SECTION 10.7      APPOINTMENT OF SUCCESSOR OWNER TRUSTEE.
Notwithstanding any other provision of this Agreement, a successor Owner
Trustee shall not be appointed by the Owner Participant without the consent of
Midwest and, so long as the Lien of the Lease Indenture has not been terminated
or discharged, the Lease Indenture Trustee and the Pass Through Trustees unless
such successor Owner Trustee (a) meets the requirements of the Trust Agreement,
(b) has a combined capital and surplus of at least $150 million, and (c)
Midwest and, so long as Lien of the Lease Indenture has not been terminated or
discharged, the Lease Indenture Trustee and the Pass Through Trustees shall
have received at the expense of the Owner Participant: (i) an opinion or
opinions of counsel, such counsel and such opinion to be reasonably acceptable
to such parties, to the effect that no regulatory consents or approvals are
required, or (ii) such other documentation reasonably satisfactory to Midwest,
the Lease Indenture Trustee or Pass Through Trustees, as the case may be;
PROVIDED, HOWEVER, that if Wilmington Trust Company resigns as Owner Trustee,
is terminated for cause, or shall become incapable of acting or shall be
adjudged bankrupt or insolvent or a receiver of the Owner Trustee or its
properties shall be appointed or any public officer shall take charge or
control of the Owner Trustee or its property or affairs for the purpose of
rehabilitation, conservation or liquidation, the opinion required by clause (c)
shall be at the expense of Midwest.

         SECTION 10.8      COOPERATION. Owner Lessor agrees, and each of the
Owner Participant and the Owner Trustee agree to cause the Owner Lessor to, at
the request of Midwest and at the sole cost and expense of EME on an After-Tax
Basis, take such actions as may be necessary for the Owner Lessor to take as
the owner of the Facility for purposes of obtaining the valid and effective
issue, transfer or amendment, as the case may be, of all Governmental
Approvals to the extent the same are required for the use, ownership, operation
or maintenance of the Facility, the Facility Site, the Undivided Interest, the
Ground Interest or any Component by Midwest or any permitted assignee of
Midwest in the manner contemplated by the Operative Documents. Midwest shall
pay on an After-Tax Basis all reasonable costs and

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<PAGE>

expenses (including, without limitation, the reasonable fees and expenses of
counsel) of Owner Lessor and each other Person party to an Operative Document
incurred in connection with any such action. It is understood and agreed
that, with respect to any action requested of it, and taken by it, under this
Section, the Owner Lessor, the Owner Participant and the Owner Trustee shall
make no representation or warranty as to, and shall have no responsibility
for the effectiveness of such action to accomplish or promote the objective
intended by the Person making such request.

SECTION XI  COVENANTS OF THE LEASE INDENTURE TRUSTEE

         SECTION 11.1      THE INDENTURE TRUSTEE'S LIENS. Neither the Lease
Indenture Company nor the Lease Indenture Trustee will directly or indirectly
create, incur, assume or suffer to exist any Indenture Trustee's Lien
attributable to it and arising out of events or conditions not related to its
rights in the Indenture Estate or the administration thereof, and will promptly
notify the Owner Participant, the Equity Investor, the Owner Trustee, Midwest
and EME in writing of the imposition of any such Lien of which it has actual
knowledge and shall promptly, at its own expense, take such action as may be
necessary to duly discharge such Indenture Trustee's Lien.

SECTION XII  EME'S INDEMNIFICATIONS

         SECTION 12.1      GENERAL INDEMNITY.

                           (a)      CLAIMS IDENTIFIED. Subject to the
exclusions stated in paragraph (b) below, EME agrees to indemnify, protect,
defend and hold harmless, and does hereby indemnify the Owner Participant,
the OP Guarantor, the Owner Lessor, the Trust Company in its individual
capacity, the Owner Trustee, the Equity Investor, the Lease Indenture
Trustee, the Lease Indenture Company in its individual capacity, the Pass
Through Trustees, the Pass Through Company in its individual capacity and
their respective Affiliates, successors, assigns, agents, members, partners,
directors, officers or employees (each an "INDEMNITEE") against any and all
Claims (including Environmental Claims) (whether or not any of the
transactions contemplated by the Operative Documents are consummated) imposed
on, incurred or suffered by or asserted against such Indemnitee in any way
relating to or in connection with or resulting from or arising out of or
attributable to:

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                                    (i)      the construction, financing,
         refinancing, acquisition, operation, rebuilding, warranty, ownership,
         use, possession, maintenance, repair, lease, condition, alteration,
         modification, restoration, refurbishing, return, purchase, sale or
         other disposition, insuring, sublease, or other use or non-use of the
         Facility, the Facility Site, the Undivided Interest, the Ground
         Interest or any Component or any portion thereof or any interest
         therein;

                                    (ii)     the conduct of the business or
         affairs of Midwest at the Facility and the Facility Site or in
         connection therewith;

                                    (iii)   the manufacture, design, purchase,
         acceptance, rejection, delivery or condition of, or improvement to, the
         Facility, the Facility Site, the Undivided Interest, the Ground
         Interest, or any Component, or any portion of any thereof or any
         interest therein;

                                    (iv)     the Facility Lease, the Facility
         Site Lease, the Facility Site Sublease, any other Operative Document
         (including any Claims arising under this SECTION 12.1(a)(iv) or SECTION
         12.1(a)(i) hereof relating directly or indirectly to ComEd Consent) or
         the Offering Circular, the execution or delivery thereof or the perfor-
         mance, enforcement, attempted enforcement or amendment, supplement or
         modification or any waiver of any terms thereof, or the transactions
         contemplated thereby or resulting therefrom;

                                    (v)     any actual or alleged Environmental
         Condition or Environmental Claim at, in, on, under, from or related in
         any way to the Facility or the Facility Site or any portion thereof or
         any Component;

                                    (vi)    the reasonable costs and expenses of
         any Indemnitee in connection with amendments or supplements to the
         Operative Documents requested or consented to by Midwest or EME or
         required or necessary as a result of a Lease Event of Default;

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<PAGE>

                                    (vii)    the imposition of any Lien other
         than, with respect to a particular Indemnitee (or a Related Party), a
         Lien arising by or through such Indemnitee that is prohibited by the
         terms of this Agreement or other Operative Documents;

                                    (viii)   any violation by, or liability
         relating to, Midwest or EME of, or under, any Requirement of Law,
         whether now or hereafter in effect (including Environmental Laws), or
         any action of any Governmental Authority or other Person taken with
         respect to the Facility or the Facility Site, the Operative Documents
         or the interest of any Indemnitee under the Operative Documents, the
         Offering Circular, or the presence, Release, generation, management,
         recycling, use, storage, transportation, treatment or manufacture of
         any Hazardous Material in, at, under, to or from the Facility, the
         Facility Site or any Component;

                                    (ix)    the non-performance or breach by
         Midwest or EME of any obligation contained in this Agreement or any
         other Operative Document or the falsity or inaccuracy of any
         representation, warranty or obligation of Midwest or EME contained in
         this Agreement, any other Operative Document or the Offering Circular;

                                    (x)     the continuing fees (if any) and ex-
         penses of the Owner Lessor, the Owner Trustee (including the reasonable
         compensation and expenses of their counsel, accountants and other
         professional persons) arising out of the Owner Lessor's or the Owner
         Trustee's discharge of their respective duties under or in connection
         with the Operative Documents;

                                    (xi)    the continuing fees (if any) and ex-
         penses of the Lease Indenture Company, the Lease Indenture Trustee, the
         Pass Through Company and the Pass Through Trustees (including the
         reasonable compensation and expenses of their respective counsel,
         accountants and other professional persons) arising out of the dis-
         charge of their respective duties under or in connection with the
         Operative Documents;

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                                    (xii)   the applications of Part 4 and 5 of
         Subtitle B of Title I of ERISA (including, without limitation, any
         penalties imposed under Section 501(i) or (1) of ERISA) or any excise
         taxes, charges or penalties imposed under Section 4975 of the Code;

                                    (xiii)   the issuance of the Initial Lessor
         Notes in accordance with Section 2.4 of the Lease Indenture and the
         issuance of any Additional Lessor Notes or New Lessor Notes pursuant
         to Section 2.12 or Section 2.13 of the Lease Indenture; and

                                    (xiv)    in any other way relating to the
         transactions contemplated by the Operative Documents.

                           (b)      CLAIMS EXCLUDED. Any Claim, to the extent
or resulting from or arising out of or attributable to any of the following,
is excluded from EME's agreement to indemnify any Indemnitee under this
SECTION 12.1:

                                    (i)      acts, omissions or events occurring
         after expiration or other termination of the Facility Lease and, where
         required by the Facility Lease, return of the Facility to the Owner
         Lessor or its designee in compliance with the provisions of the Facil-
         ity Lease, except to the extent such Claim is (A) an Environmental
         Claim that relates to, results from, arises out of or is attributable
         to an Environmental Condition that was in existence at the Facility or
         the Facility Site prior to or as of such expiration or termination of
         the Facility Lease and the return of the Facility or (B) is a Claim
         that relates to, results from, arises out of or is attributable to the
         ComEd Consent;

                                    (ii)     with respect to a particular
         Indemnitee and Related Parties, any offer, sale, assignment, transfer
         or other disposition (voluntary or involuntary) by or on behalf of (a)
         in the case of the Owner Participant of any of its interest in the
         Beneficial Interest, or (b) in the case of the Owner Lessor, and if
         such action is taken at the written direction of the Owner Participant,
         the Owner Participant and Related Parties, of all or any of the Owner
         Lessor's

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<PAGE>

         interest in the Facility or the Facility Site, or (c) all or any of
         either Pass Through Trust's interest in the Lessor Notes or the
         collateral therefor, unless such transfer is required by the terms of
         the Operative Documents or occurs in connection with the exercise of
         remedies during a Lease Event of Default;

                                    (iii)   with respect to any Indemnitee and
         Related Parties, any Claim attributable to the gross negligence or
         willful misconduct of the Indemnitee seeking indemnification or a
         Related Party of such Indemnitee;

                                    (iv)     as to any Indemnitee, any Claim
         attributable to the noncompliance of such Indemnitee or a Related
         Party, with any of the terms of, or any misrepresentation or breach of
         warranty by such Indemnitee contained in any Operative Document or any
         breach by such Indemnitee or a Related Party of any covenant contained
         in any Operative Document attributable to such Indemnitee or Related
         Party, unless attributable to Midwest or EME or the breach by another
         Person of its obligations under the Operative Documents or imputed to
         the Indemnitee;

                                    (v)      with respect to the Owner Trustee
         and the Trust Company, any Claim constituting or arising from an Owner
         Lessor's Lien attributable to it;

                                    (vi)    with respect to the Lease Indenture
         Trustee, any Claim arising from an Indenture Trustee's Lien prohibited
         by SECTION 11.1 hereof;

                                    (vii)   with respect to the Pass Through
         Trustee and the Pass Through Company, any Claim arising from a Lien
         prohibited by Section 7.16 of either Pass Through Trust Agreement;

                                    (viii)   with respect to the Owner
         Participant, any claim constituting or arising from an Owner
         Participant's Lien;

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<PAGE>

                                    (ix)    any Claim which constitutes Transac-
         tion Costs which the Owner Participant is obligated to pay pursuant to
         SECTION 2.3(a) hereof;

                                    (x)     any Claim relating to the payment of
         any other amount to the extent such Indemnitee or a Related Party has
         expressly agreed in any Operative Document to pay such amount without a
         right of reimbursement;

                                    (xi)     any Claim that is a Tax, or is a
         cost of contesting a Tax, whether or not EME is required to indemnify
         therefor pursuant to SECTION 14.2 or under the Tax Indemnity
         Agreement;

                                    (xii)   any failure on the part of the Owner
         Trustee to distribute in accordance with the Trust Agreement any
         amounts received by it under the Operative Documents and distributable
         by it thereunder;

                                    (xiii)  any Claim relating to the costs and
         expenses of any Indemnitee in connection with any amendments or
         supplements to the Operative Documents requested by such Indemnitee or
         a Related Party if such amendment or supplement is not required by the
         Operative Documents;

                                    (xiv)   any Claim that constitutes principal
         and/or interest on the Lessor Notes, any Additional Lessor Notes or the
         corresponding payments under the Certificates or any Additional
         Certificates, respectively; and

                                    (xv)    any Claim arising out of obligations
         expressly assumed by the Indemnitee seeking indemnification or a
         Related Party thereof.

PROVIDED that the terms "omission," "gross negligence" and "willful misconduct,"
when applied with respect to the Owner Trustee, the Owner Participant, the OP
Guarantor, the Equity Investor, the Owner Lessor, the Lease Indenture Trustee,
the Pass Through Trustees or any Certificateholder or any Affiliate of any
thereof, shall

                                        66
<PAGE>

not include any liability imputed as a matter of law to such Indemnitee
solely by reason of such entity's interest in the Facility or the Facility
Site or such Indemnitee's failure to act in respect of matters which are or
were the obligation of Midwest under this Agreement or any other Operative
Document.

                           (c)      INSURED CLAIMS. Subject to the provisions
of paragraph (e) of this SECTION 12.1, in the case of any Claim indemnified
by EME hereunder which is covered by a policy of insurance maintained by EME,
each Indemnitee agrees, unless it and each other Indemnitee shall waive its
rights to indemnification (for itself and each Related Party thereto) in a
manner reasonably acceptable to EME, to cooperate, at the sole cost and
expense of EME, with insurers in exercise of their rights to investigate,
defend or compromise such Claim.

                           (d)      AFTER-TAX BASIS. EME agrees that any
payment or indemnity pursuant to this SECTION 12.1 in respect of any Claim
shall be made on an After-Tax Basis to the Indemnitees.

                           (e)      CLAIMS PROCEDURE. Each Indemnitee shall
promptly after such Indemnitee shall have actual knowledge thereof notify EME
in writing of any Claim as to which indemnification is sought; PROVIDED, that
the failure so to notify EME shall not reduce or affect EME's liability which
it may have to such Indemnitee under this SECTION 12.1. Any amount payable to
any Indemnitee pursuant to this SECTION 12.1 shall be paid within fifteen
(15) days after receipt of such written demand therefor from such Indemnitee,
accompanied by a certificate of such Indemnitee stating in reasonable detail
the basis for the indemnification thereby sought and (if such Indemnitee is
not a party hereto) an agreement to be bound by the terms hereof as if such
Indemnitee were such a party. The foregoing shall not, however, constitute an
obligation to disclose confidential information of any kind without the
execution of an appropriate confidentiality agreement. Promptly after EME
receives notification of such Claim accompanied by a written statement
describing in reasonable detail the Claims which are the subject of and basis
for such indemnity and the computation of the amount so payable, EME shall
notify such Indemnitee in writing whether it intends to pay, object to,
compromise or defend any matter involving the asserted liability of such
Indemnitee. EME shall have the right to investigate and so long as no
Material Lease Default or Lease Event of Default shall have occurred and be
continuing, EME shall have the right in its sole discretion, to defend or
compromise any Claim for which indemnification is sought under this

                                        67
<PAGE>

SECTION 12.1 which EME acknowledges in writing to the applicable Indemnitee
is subject to indemnification hereunder; PROVIDED that no such defense or
compromise shall involve any danger of (i) foreclosure, sale, forfeiture or
loss of, or imposition of a Lien on any part of the Undivided Interest, the
Ground Interest, the Trust Estate or the Indenture Estate or the impairment
of the Facility in any material respect or (ii) any criminal liability being
incurred or any material adverse effect on such Indemnitee, PROVIDED,
FURTHER, that no Claim shall be compromised by EME on a basis that admits any
criminal violation or gross negligence or willful misconduct on the part of
such Indemnitee without the express written consent of such Indemnitee; and
PROVIDED, FURTHER, that to the extent that other Claims unrelated to the
transactions contemplated by the Operative Documents are part of the same
proceeding involving such Claim, EME may assume responsibility for the
contest or compromise of such Claim only if the same may be and is severed
from such other Claims (and each Indemnitee agrees to use reasonable efforts
to obtain such a severance). If EME elects, subject to the foregoing, to
compromise or defend any such asserted liability, it may do so at its own
expense and by counsel selected by it and reasonably satisfactory to such
Indemnitee. Upon EME's election to compromise or defend such asserted
liability and prompt notification to such Indemnitee of its intent to do so,
such Indemnitee shall cooperate at EME's expense with all reasonable requests
of EME in connection therewith and will provide EME with all information not
within the control of EME as is reasonably available to such Indemnitee which
EME may reasonably request; PROVIDED, HOWEVER, that such Indemnitee shall
not, unless otherwise required by Requirement of Law, be obligated to
disclose to EME or any other Person, or permit EME or any other Person to
examine (i) any income tax returns of the Owner Participant or (ii) any
confidential information or pricing information not generally accessible by
the public possessed by the Owner Participant (and, in the event that any
such information is made available, EME shall treat such information as
confidential and shall take all actions reasonably requested by such
Indemnitee for purposes of obtaining a stipulation from all parties to the
related proceeding providing for the confidential treatment of such
information from all such parties). Where EME, or the insurers under a policy
of insurance maintained by EME, undertake the defense of such Indemnitee with
respect to a Claim (with counsel reasonably satisfactory to each such Person
such Indemnitee and without reservation of rights against such Indemnitee),
no additional legal fees or expenses of such Indemnitee in connection with
the defense of such Claim shall be indemnified hereunder unless such fees or
expenses were incurred at the request of EME or such insurers.
Notwithstanding the foregoing, an Indemnitee may participate at its own

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<PAGE>

expense in any judicial proceeding controlled by EME pursuant to the preceding
provisions, but only to the extent that such party's participation does not in
the reasonable opinion of counsel to EME interfere with such control; PROVIDED,
HOWEVER, that such party's participation does not constitute a waiver of the
indemnification provided in this SECTION 12.1; PROVIDED, FURTHER, that if and
to the extent that (i) such Indemnitee is advised by counsel that an actual or
potential conflict of interest exists where it is advisable for such Indemnitee
to be represented by separate counsel or (ii) there is a risk that such
Indemnitee may be indicted or otherwise charged in a criminal complaint and
such Indemnitee informs EME that such Indemnitee desires to be represented by
separate counsel, such Indemnitee shall have the right to control its own
defense of such Claim and the reasonable fees and expenses of such defense
(including, without limitation, the reasonable fees and expenses of such
separate counsel) shall be borne by EME. So long as no Lease Event of Default
shall have occurred and be continuing, no Indemnitee shall enter into any
settlement or other compromise with respect to any Claim without the prior
written consent of EME unless (i) the Indemnitee waives its rights to
indemnification hereunder or (ii) EME has not acknowledged its indemnity
obligation with respect thereto and there is a significant risk that a default
judgment will be entered against such Indemnitee. Nothing contained in this
SECTION 12.1(e) shall be deemed to require an Indemnitee to contest any Claim
or to assume responsibility for or control of any judicial proceeding with
respect thereto.

                           (f)      SUBROGATION. To the extent that a Claim
indemnified by EME under this SECTION 12.1 is in fact paid in full by EME or
an insurer under an insurance policy maintained by EME, EME (so long as no
Lease Event of Default shall have occurred and be continuing) or such insurer
shall be subrogated to the rights and remedies of the Indemnitee on whose
behalf such Claim was paid to the extent of such payment (other than rights
of such Indemnitee under insurance policies maintained at its own expense)
with respect to the transaction or event giving rise to such Claim. Should an
Indemnitee receive any refund, in whole or in part, with respect to any Claim
paid by EME hereunder, it shall promptly pay over to EME the lesser of (i)
the amount refunded reduced by the amount of any Tax incurred by reason of
the receipt or accrual of such refund and increased by the amount of any Tax
(but not in excess of the amount of such reduction) saved as a result of such
payment or (ii) the amount EME or any of its insurers has paid in respect of
such Claim; PROVIDED that, so long as a Material Lease Default or Lease Event
of Default shall have occurred and is continuing such amount may be held by

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<PAGE>

the Owner Lessor as security for Midwest's and EME's respective obligations
under the Operative Documents.

         Any Person seeking indemnity under this SECTION 12.1 who is not a
party to this Agreement shall agree to the terms and conditions set forth in
this SECTION 12.1 as a condition to making any such claim for indemnity under
this SECTION 12.1.

         SECTION 12.2 GENERAL TAX INDEMNITY.

                           (a)      INDEMNITY. Except as provided in
paragraph (b), EME agrees to indemnify on an After-Tax Basis each of the
Owner Participant, the OP Guarantor, the Equity Investor, the Owner Lessor,
the Trust Company in its individual capacity, the Owner Trustee, the OP
Member, the Noteholders, the Lease Indenture Trustee, the Lease Indenture
Company in its individual capacity, the Pass Through Trustees and the Pass
Through Company in its individual capacity, their respective successors and
assigns, the past and present partners or members of or holders of the
ownership interests in, as the case may be, the Owner Participant and the
Affiliates of each of the foregoing (each a "TAX INDEMNITEE") and to hold
each Tax Indemnitee harmless from and to defend each Tax Indemnitee against
all Taxes that are imposed upon any Tax Indemnitee, the Facility, the
Facility Site, the Undivided Interest, the Ground Interest, or any portion or
Component thereof or any interest therein, or upon any Operative Document or
interest therein, arising out of, in connection with or relating to, any of
the following:

                                    (i)      the construction, financing,
         refinancing, acquisition, operation, warranty, ownership, use,
         possession, maintenance, repair, lease, condition, alteration,
         modification, restoration, refurbishing, return, purchase, sale or
         other disposition, insuring, sublease, or other use or non-use of the
         Facility, Undivided Interest, Ground Interest or the Facility Site, or
         any portion or Component thereof or any interest therein;

                                    (ii)     the conduct of the business or
         affairs of Midwest at the Facility and the Facility Site;

                                    (iii)   the manufacture, design, purchase,
         acceptance, rejection, delivery or condition of, or improvement to, the

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         Facility, the Undivided Interest, the Ground Interest, the Facility
         Site, or any portion or Component thereof, or any interest therein;

                                    (iv)     the Facility Lease, the Facility
         Site Lease, the Facility Site Sublease or any other Operative Document,
         the execution or delivery thereof, or the performance, enforcement or
         amendment of any terms thereof;

                                    (v)      the payment or receipt of Basic
         Lease Rent, Renewal Lease Rent, Supplemental Lease Rent or any other
         amount payable under the Facility Lease; or

                                    (vi)     otherwise relating to the
         transactions contemplated by the Operative Documents.

                           (b)      EXCLUDED TAXES. The indemnity provided for
in paragraph (a) above shall not extend to any of the following Taxes (the
"EXCLUDED TAXES"):

                                    (i)     Taxes imposed on, based on or mea-
         sured by gross or net income or receipts or capital or net worth (other
         than sales, use, property, ad valorem, rental, stamp, transfer, excise,
         license and value added taxes, and other than franchise tax imposed by
         the State of Illinois upon the Owner Participant, the Owner Lessor or
         their respective Affiliates under the Business Corporation Act of 1983,
         as amended, or any successor legislation thereto);

                                    (ii)     Taxes attributable to any period
         after expiration or other termination of the Facility Lease and, where
         required by the Facility Lease, return of the Facility to the Owner
         Lessor or its designee in accordance with the Facility Lease (or, in
         the case of the Lease Indenture Trustee, after the repayment of the
         Lessor Notes);

                                    (iii)   Taxes imposed on a Tax Indemnitee
         attributable to the gross negligence or willful misconduct of such Tax
         Indemnitee or any Related Party of such Tax Indemnitee;

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                                    (iv)    Taxes in the nature of capital gain,
         accumulated earnings, personal holding company, excess profits,
         succession or estate, minimum, alternative minimum, preference,
         franchise, conduct of business and other similar taxes (other than
         franchise tax imposed by the State of Illinois upon the Owner Partici-
         pant, the Owner Lessor or their respective Affiliates under the Busi-
         ness Corporation Act of 1983, as amended, or any successor legislation
         thereto);

                                    (v)     Taxes imposed on a Tax Indemnitee
         that arise out of, or are caused by, any act or omission of such Tax
         Indemnitee (or any Related Party thereof) that is expressly prohibited
         by any Operative Document or by a breach by such Tax Indemnitee (or any
         Related Party thereof) of any of its representations, warranties or
         covenants under any Operative Document;

                                    (vi)     Taxes arising out of, or caused by,
         any voluntary assignment, sale, transfer or other voluntary
         disposition, or any involuntary transfer or disposition resulting from
         a bankruptcy or similar proceeding for relief of debtors in which such
         Tax Indemnitee is a debtor, by (or a foreclosure by a creditor of) (A)
         the Owner Participant of any of its Beneficial Interest, (B) the Owner
         Lessor of all or any of its interest in the Facility or the Facility
         Site, or (C) the Lease Indenture Trustee of any interest in the Lessor
         Notes or the Indenture Estate unless (i) such transfer or disposition
         occurs during the continuance of a Lease Event of Default, or (ii) such
         transfer or disposition is required under, or occurs pursuant to, the
         Operative Documents and the price paid is other than Fair Market Sales
         Value;

                                    (vii)    Taxes arising in connection with
         Owner Participant's Liens or Owner Lessor's Liens;

                                    (viii)  Taxes imposed on any assignee or
         successor-in-interest to a Tax Indemnitee to the extent any such Taxes
         exceed the Taxes that would have been imposed had no assignment or
         transfer taken place determined under the law as in effect on the date

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         of transfer; PROVIDED that this exclusion shall not apply to the compu-
         tation of the gross-up amounts necessary to make a payment on an
         After-Tax Basis, nor to a transferee, assignee or successor in interest
         that acquires the interest of a Tax Indemnitee pursuant to a transfer
         or disposition in connection with the exercise of remedies during the
         continuance of a Lease Event of Default;

                                    (ix)    Taxes that are included as a part of
         Transaction Costs;

                                    (x)     Taxes imposed on, based on, or mea-
         sured by any compensation that any Owner Trustee or the Lease
         Indenture Trustee receives for its services;

                                    (xi)     any U.S. federal income taxes,
         including with respect to the Owner Participant, Taxes for which EME
         is obligated to indemnify the Owner Participant under the Tax Indem-
         nity Agreement (or which are expressly excluded from indemnification
         thereunder);

                                    (xii)   other than with respect to the
         Certificateholders, the Lease Indenture Trustee and the Pass Through
         Trustees or any Related Party in respect of any thereof (a "LENDER
         INDEMNITEE"), Taxes resulting from the Owner Lessor not being treated
         as a grantor trust or a nonentity for federal, state or local income
         tax purposes;

                                    (xiii)   Taxes attributable to the failure
         of any Tax Indemnitee to comply with certification, information,
         documentation, reporting or other similar requirements concerning the
         nationality, residence, identity, connection with the jurisdiction
         imposing such Taxes or other similar matters; PROVIDED that the
         foregoing exclusion shall only apply if such Tax Indemnitee is eligible
         and obligated to comply with such requirement and shall have been given
         timely written notice of such requirement by EME;

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<PAGE>

                                    (xiv)   Taxes imposed on a Tax Indemnitee
         where the Tax Indemnitee's breach of its contest obligations under
         SECTION 12.2(g) effectively precludes EME's ability to contest the
         Taxes;

                                    (xv)    Taxes imposed on any Tax Indemnitee
         resulting from an amendment, modification, supplement or waiver to any
         Operative Document which was not requested by Midwest or EME and as to
         which Midwest or EME is not a party and the Tax Indemnitee (or, in the
         case of the Owner Participant, the Facility Lessor if acting at the
         express direction of the Owner Participant) is a party unless such
         amendment, modification, supplement or waiver (A) was required by
         applicable law or the Operative Documents, (B) may be necessary or
         appropriate to, and is in conformity with, any amendment,
         modification, supplement or waiver to any Operative Document agreed to
         by Midwest or EME in writing, or (C) is made while a Lease Event of
         Default shall have occurred and be continuing;

                                    (xvi)    Taxes imposed under Section 4975 of
         the Code, Section 406 of ERISA or any comparable laws of any
         governmental authority to the extent resulting from action by such Tax
         Indemnitee other than, in the case of the Owner Participant, the taking
         of any action at the request or direction of EME;

                                    (xvii)   Taxes imposed to the extent such
         Taxes result from the Tax Indemnitee (and in the case of the Owner
         Lessor, only if acting at the written direction of the Owner
         Participant) being organized under the laws of a jurisdiction other
         than the United States or any State thereof (other than, in the case of
         a Lender Indemnitee, such Taxes which did not exist under law in effect
         on the date such Lender Indemnitee became a party to this transaction);

                                    (xviii)  Any Taxes imposed on a Tax
         Indemnitee to the extent that such taxes would not have been imposed
         but for the activities of such Tax Indemnitee unrelated to the transac-
         tions contemplated hereby;

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<PAGE>

                                    (xix)   Taxes imposed on a Tax Indemnitee in
         the nature of interest, penalties, fines and additions to tax (i)
         payable as a result of such Tax Indemnitee's failure to file, in a
         procedurally proper manner and on a timely basis, any tax reports,
         returns or statements as to which EME has timely notified such Tax
         Indemnitee in writing of the requirement to file, unless such failure
         is otherwise caused by the failure of EME to fulfill its obligations,
         if any, with respect to such return (including provision of information
         sufficient to enable such Tax Indemnitee to file such report, return or
         statement), or (ii) to the extent not attributable to or resulting from
         Taxes for which an indemnity is provided hereunder; and

                                    (xx)    Taxes for as long as such Taxes are
         being contested pursuant to the contest provisions contained in SEC-
         TION 12.2(g).

                           (c)      PAYMENT. Each payment required to be made
by EME to a Tax Indemnitee pursuant to this SECTION 12.2 shall be paid either
(i) when due directly to the applicable taxing authority by EME if it is
permitted to do so, or (ii) where direct payment is not permitted and with
respect to gross up amounts in immediately available funds to such Tax
Indemnitee by the latest of (A) 15 days following EME's receipt of the Tax
Indemnitee's written demand for the payment (which demand shall be
accompanied by a statement of the Tax Indemnitee describing in reasonable
detail the Taxes for which the Tax Indemnitee is demanding indemnity and the
computation of such Taxes), (B) in the case of amounts which are being
contested pursuant to such paragraph (g), 15 days following the time and in
accordance with a final determination of such contest or (C) in the case of
any indemnity demand for which EME has requested review and determination
pursuant to paragraph (d) below, the completion of such review and
determination, but in no event later than the date which is three Business
Days prior to the date payment of such Taxes is due. Any amount payable to
EME pursuant to paragraph (e) or (f) below shall be paid within 15 days after
the Tax Indemnitee realizes a Tax Benefit giving rise to a payment under
paragraph (e) or receives a refund or credit giving rise to a payment under
paragraph (f), as the case may be, and shall be accompanied by a statement of
the Tax Indemnitee computing in reasonable detail the amount of such payment.
Upon the final determination of any contest pursuant to paragraph (g) below
in respect of any Taxes for which EME has made a Tax Advance, the amount

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of EME's obligation under paragraph (a) above shall be determined as if such
Tax Advance had not been made. Any obligation of EME under this SECTION 12.2
and the Tax Indemnitee's obligation to repay the Tax Advance will be
satisfied first by set off against each other, and any difference owing by
either party will be paid within 10 days of such final determination.

                           (d)      INDEPENDENT EXAMINATION. Within 15 days
after EME receives any computation from the Tax Indemnitee, EME may request
in writing that an independent public accounting firm selected by the Tax
Indemnitee and reasonably acceptable to EME review and determine on a
confidential basis the amount of any indemnity payment by EME to the Tax
Indemnitee pursuant to this SECTION 12.2 or any payment by a Tax Indemnitee
to EME pursuant to paragraph (e) or (f) below. The Tax Indemnitee and EME
shall cooperate with such accounting firm and supply it with all information
reasonably necessary for the accounting firm to conduct such review and
determination, PROVIDED that such accounting firm shall agree in writing in a
manner satisfactory to the Tax Indemnitee, or EME, as the case may be, to
maintain the confidentiality of such information, and PROVIDED FURTHER that
neither any Tax Indemnitee nor EME shall be required to disclose any of its
tax returns or books that such Tax Indemnitee or EME, as the case may be,
reasonably deems to be confidential in connection with such verification, and
the parties hereto agree that such Tax Indemnitee, or EME, as the case may
be, shall have sole control over the positions taken with respect to such
party's tax returns and filings. The fees and disbursements of such
accounting firm will be paid by EME; PROVIDED that such fees and
disbursements will be paid by the Tax Indemnitee if the accountants determine
that the present value of the total payments as calculated by the Tax
Indemnitee is more than 105 percent of the present value of the correct
payments (such present values in each case to be determined by the Discount
Rate). In the event such accounting firm determines that such computations
are incorrect, then such firm shall determine what it believes to be the
correct computations. The computations of the accounting firm shall be final,
binding and conclusive upon EME and the Tax Indemnitee. The parties hereto
agree that the independent public accounting firm's sole responsibility shall
be to verify the computation of any payment pursuant to this SECTION 12.2 and
that matters of interpretation of this Participation Agreement or any other
Operative Document are not within the scope of the independent accountant's
responsibility. Such accounting firm shall be requested to make its
determination within 30 days.

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                           (e)      TAX BENEFIT. If, as the result of any
Taxes paid or indemnified against by EME under this SECTION 12.2, the
aggregate Taxes actually paid by the Tax Indemnitee in connection with such
payment for any taxable year and not subject to indemnification pursuant to
this SECTION 12.2 are less (whether by reason of a deduction, credit,
allocation or apportionment of income or otherwise) than the amount of such
Taxes that otherwise would have been payable by such Tax Indemnitee (a "TAX
BENEFIT"); then to the extent such Tax Benefit was not taken into account in
determining the amount of indemnification payable by EME under paragraph (a)
above and provided no Lease Event of Default shall have occurred and be
continuing (in which event the payment provided under this SECTION 12.2(e)
shall be deferred until the Lease Event of Default has been cured), such Tax
Indemnitee shall pay to EME the lesser of (A) (y) the amount of such Tax
Benefit, plus (z) an amount equal to any United States federal, state or
local income tax benefit resulting to the Tax Indemnitee from the payment
under clause (y) above and this clause (z) (determined using the same
assumptions as set forth in the second sentence under the definition of
After-Tax Basis) and (B) the amount of the indemnity paid pursuant to this
SECTION 12.2 giving rise to such Tax Benefit, PROVIDED that any excess of the
amount described in clause (A) over the amount described in clause (B) shall
be carried forward and applied to reduce pro tanto any subsequent obligations
of EME to make payment to such Tax Indemnitee pursuant to this SECTION 12.2.
If it is subsequently determined that the Tax Indemnitee was not entitled to
such Tax Benefit, the portion of such Tax Benefit that is required to be
repaid or recaptured will be treated as Taxes for which EME must indemnify
the Tax Indemnitee pursuant to this SECTION 12.2 without regard to paragraph
(b) hereof.

                           (f)      REFUND. If a Tax Indemnitee obtains a
refund or credit or would have received such refund or credit but for a
counterclaim or other claim not indemnified by EME hereunder against which
such refund or credit has not been applied (an "offset refund or credit") of
all or part of any Taxes paid, reimbursed or advanced by EME pursuant to this
SECTION 12.2, the Tax Indemnitee shall pay to EME within 15 days of such
receipt, or in the case of an offset refund or credit, within 15 days of the
resolution of such contest (x) the amount of such refund or credit (net of
any Tax payable by the Tax Indemnitee as a result of the receipt or accrual
of such refund or credit) plus (y) an amount equal to any Tax Benefit
realized by such Tax Indemnitee by reason of such payment to EME (determined
using the same assumptions as set forth in the second sentence under the
definition of After-Tax Basis), PROVIDED that (A) if at the time such
payment is due to EME a Lease

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Event of Default shall have occurred and be continuing, such amount shall not
be payable until such Lease Event of Default has been cured, and (B) the
amount payable to EME pursuant to this sentence shall not exceed the amount
of the indemnity payment in respect of such refunded or credited Taxes that
was made by EME (and such excess shall be carried forward and applied to
reduce pro tanto any subsequent obligations of EME to make payments to such
Tax Indemnitee pursuant to this SECTION 12.2). If it is subsequently
determined that the Tax Indemnitee was not entitled to such refund or credit,
the portion of such refund or credit that is required to be repaid or
recaptured will be treated as Taxes for which EME must indemnify the Tax
Indemnitee pursuant to this SECTION 12.2 without regard to paragraph (b)
hereof. If, in connection with a refund or credit of all or part of any Taxes
paid, reimbursed or advanced by EME pursuant to this SECTION 12.2, a Tax
Indemnitee receives an amount representing interest on such refund or credit,
the Tax Indemnitee shall pay to EME within 15 days (1) the amount of such
interest that shall be fairly attributable to such Taxes paid, reimbursed or
advanced by EME prior to the receipt of such refund or credit (net of Taxes
payable in respect of the receipt or accrual of such interest) and (2) any
Tax savings resulting from payments made by the Tax Indemnitee under this
SECTION 12.2.

                           (g)      CONTEST.

                                    (i)      NOTICE OF CONTEST. If a written
         claim is made by any taxing authority against a Tax Indemnitee for any
         Taxes with respect to which EME may be required to indemnify against
         hereunder (a "TAX CLAIM"), such Tax Indemnitee shall give EME written
         notice of such Tax Claim promptly after its receipt, and shall furnish
         EME with copies of such Tax Claim and all other writings received from
         the taxing authority to the extent relating to such claim, PROVIDED
         that failure so to notify EME shall not relieve EME of any obligation
         to indemnify the Tax Indemnitee hereunder except to the extent such
         failure effectively precludes EME from contesting such Tax. The Tax
         Indemnitee shall not pay such Tax Claim until at least 30 days after
         providing EME with such written notice, unless (a) the Tax Indemnitee
         is required to do so by law or regulation and (b) in the written notice
         described above, the Tax Indemnitee has notified EME of such
         requirement.

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                                    (ii)     CONTROL OF CONTEST. Subject to
         subsection (g)(iii) below, EME will be entitled to contest (acting
         through counsel selected by EME and reasonably satisfactory to the Tax
         Indemnitee), and control the contest of, any Tax Claim if (i) such Tax
         Claim may be segregated procedurally and contested independently from
         tax claims for which EME is not obligated to indemnify the Tax
         Indemnitee, PROVIDED that if the Tax Indemnitee reasonably determines
         at any time that permitting EME to conduct or continue to conduct such
         contest could have material adverse business or other consequences to
         such Tax Indemnitee, such Tax Indemnitee shall have the right to
         control or reassert control over such contest, or (ii) the Tax
         Indemnitee requests that EME control such contest; PROVIDED that in the
         case of any such contest pursuant to (i) or (ii) EME shall use all
         reasonable efforts to contest such Tax Claim in its own name, and
         PROVIDED FURTHER that such contest shall be at EME's sole cost and
         expense. EME shall consult in good faith with the Tax Indemnitee and
         its counsel and shall provide the Tax Indemnitee with copies of any
         reports or claims issued by the relevant auditing agent or taxing
         authority, but the decisions regarding what actions to be taken shall
         be made by EME in its sole judgment.

                                    In the case of all other Tax Claims, the Tax
         Indemnitee will contest the Tax Claim at EME's expense if EME shall
         request that the Tax be contested (in accordance with subsection
         (g)(iii) below), and the following rules shall apply with respect to
         such contest:

                                            (1)      the Tax Indemnitee will
         control the contest of such Tax Claim in good faith (acting through
         counsel selected by the Tax Indemnitee and reasonably satisfactory to
         EME),

                                            (2)     at EME's written request, if
         payment is made to the applicable taxing authority, the Tax Indemnitee
         shall use all reasonable efforts to obtain a refund thereof in
         appropriate administrative or judicial proceedings,

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                                            (3)      the Tax Indemnitee
         conducting such contest shall consult with and keep reasonably informed
         EME and its designated counsel with respect to such Tax Claim and shall
         consider and consult in good faith with EME regarding any request (a)
         to resist payment of Taxes if practical and (b) not to pay such Taxes
         except under protest if protest is necessary and proper, but the deci-
         sion regarding what actions to be taken shall be made by the Tax
         Indemnitee in its sole judgment.

                                            (4)      Notwithstanding paragraph
         (3), above, the Tax Indemnitee shall not otherwise settle, compromise
         or abandon such contest without EME's prior written consent except as
         provided in paragraph (g)(iv) below.

                                    (iii)    CONDITIONS OF CONTEST.
         Notwithstanding the foregoing, no contest with respect to a Tax Claim
         will be required or permitted pursuant to this SECTION 12.2, and EME
         shall be required to pay the applicable Taxes without contest, unless:

                                            (1)      within 30 days after notice
         by the Tax Indemnitee to EME of such Tax Claim, EME shall request in
         writing to the Tax Indemnitee that such Tax Claim be contested,
         PROVIDED that if a shorter period is required for taking action with
         respect to such Tax Claim and the Tax Indemnitee notifies EME of such
         requirement, EME shall use reasonable best efforts to request such
         contest within such shorter period, and such Tax Indemnitee shall take
         no action for as long as it is legally able to do so,

                                            (2)      no Lease Event of
         Default has occurred and is continuing,

                                            (3)      there is no risk of sale,
         forfeiture or loss of, or the creation of a Lien (other than a
         Permitted Lien) on the Facility, Owner Lessor's or Owner Participant's
         interest in the Facility, the Facility Site, the Undivided Interest,
         the Ground Interest or any portion or Component thereof or any interest
         therein as a result of such Tax Claim; PROVIDED that this clause (3)
         shall not apply if

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         EME shall have posted and maintained a bond or otherwise provided
         security for EME's obligations under SECTION 12.2 satisfactory to the
         Tax Indemnitee in its reasonable discretion, or the Tax is fully paid
         in either manner specified in clause (5) below,

                                            (4)      there is no risk of
         imposition of any criminal penalties,

                                            (5)      if such contest involves
         payment of such Tax, EME will either advance to the Tax Indemnitee on
         an interest-free basis and with no after-tax cost to such Tax
         Indemnitee (a "TAX ADVANCE") or pay such Tax Indemnitee the amount
         payable by EME pursuant to SECTION 12.2(a) above with respect to such
         Tax, and such Tax Indemnitee shall promptly pay to EME any net Tax
         Benefit recognized which results from any imputed interest deduction
         arising from such interest free Tax Advance plus any net Tax Benefit
         recognized which result from making any such payment.

                                            (6)      EME agrees to pay (and pays
         on demand) and with no after-tax cost to such Tax Indemnitee all
         reasonable costs, losses and expenses incurred by the Tax Indemnitee in
         connection with the contest of such claim (including, without limita-
         tion, all reasonable legal, accounting and investigatory fees and
         disbursements),

                                            (7)      the Tax Indemnitee has been
         provided at EME's sole expense with an opinion, reasonably acceptable
         to such Tax Indemnitee, of independent tax counsel of recognized
         standing selected by EME and reasonably acceptable to the Tax
         Indemnitee to the effect that there is a Reasonable Basis for
         contesting such Tax Claim,

                                            (8)      in the case of a judicial
         appeal, no appeal to the U.S. Supreme Court shall be required of the
         Tax Indemnitee or shall be permitted by EME.

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                                            (9)      In the case of a judicial
         contest, EME shall have delivered to the Tax Indemnitee a written
         acknowledgment of its liability under this SECTION 12.2 for such
         Taxes, PROVIDED, HOWEVER, that EME shall not be bound by its
         acknowledgment of liability if the contest is resolved on the basis of
         a written decision of the adjudicator that clearly indicates the basis
         for the conclusion that EME has no liability under this SECTION 12.2
         with respect to such Tax, unless EME's conduct of the contest has
         materially prejudiced the Tax Indemnitee.

                                    (iv)    WAIVER OF INDEMNIFICATION.  Notwith-
         standing anything to the contrary contained in this SECTION 12.2, the
         Tax Indemnitee at any time may elect to decline to take any action or
         any further action with respect to a Tax Claim and may in its sole
         discretion settle or compromise any contest with respect to such Tax
         Claim without EME's consent if the Tax Indemnitee:

                                            (1)      waives its right to any
         indemnity payment by EME pursuant to this SECTION 12.2 in respect of
         such Tax Claim (and any other claim for Taxes with respect to any other
         taxable year the contest of which is effectively precluded by the Tax
         Indemnitee's declination to take action with respect to the Tax Claim),
         and

                                            (2)      promptly repays to EME any
         Tax Advance and any amount paid to such Tax Indemnitee under SECTION
         12.2(a) above in respect of such Taxes.

         Except as provided in the preceding sentence, any such waiver shall
be without prejudice to the rights of the Tax Indemnitee with respect to any
other Tax Claim.

                           (h)      REPORTS.

                                    (i)    If any report, statement or return is
         required to be filed by a Tax Indemnitee with respect to any Tax that
         is subject to indemnification under this SECTION 12.2, EME will (1)

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         notify the Tax Indemnitee in writing of such requirement not later than
         30 days prior to the date such report, statement or return is required
         to be filed (determined without regard to extensions) and (2) either
         (y) if permitted by applicable law, prepare such report, statement or
         return for filing by EME in such manner as will show the ownership of
         the Facility by the Owner Lessor for United States federal, state and
         local income tax purposes (if applicable), send a copy of such report,
         statement or return to the Tax Indemnitee and timely file such report,
         statement or return with the appropriate taxing authority, or (z) if so
         directed by the Tax Indemnitee or in any event if practicable and if
         the return to be filed reflects only information in respect of the
         transactions contemplated by the Operative Documents, prepare and
         furnish to such Tax Indemnitee not later than 30 days prior to the date
         such report, statement or return is required to be filed (determined
         without regard to extensions) a proposed form of such report, statement
         or return for filing by the Tax Indemnitee.

                                    (ii)   Each of the Tax Indemnitee or EME, as
         the case may be, will timely provide the other, at EME's expense, with
         all information in its possession that the other party may reasonably
         require and request to satisfy its obligations under this paragraph
         (h), but only if and to the extent that such Tax Indemnitee is legally
         entitled to furnish such information.

                           (i)      NON-PARTIES. If a Tax Indemnitee is not a
party to this Agreement, EME may require such Tax Indemnitee to agree in
writing, in a form reasonably acceptable to Midwest, to the terms of this
SECTION 12 (to the extent applicable to such Tax Indemnitee) prior to making
any payment to such Tax Indemnitee under this Section.

SECTION XIII        MIDWEST'S RIGHT OF QUIET ENJOYMENT

         Each party to this Agreement acknowledges notice of, and consents in
all respects to, the terms of the Facility Lease, and the Facility Site
Sublease and expressly, severally and as to its own actions only, agrees
that, so long as no Lease Event of Default has occurred and is continuing,
neither it nor any party acting by, through or under such party shall take or
cause to be taken any action contrary to

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Midwest's rights under the Facility Lease and the Facility Site Sublease,
including the right to possession, use and quiet enjoyment of the Undivided
Interest and the Ground Interest.

SECTION XIV         SUPPLEMENTAL FINANCING OF IMPROVEMENTS; OPTIONAL
                    REFINANCINGS

         SECTION 14.1 FINANCING IMPROVEMENTS.

         Upon the written request of Midwest delivered at least 90 days prior
to any proposed financing of the cost of any Required or Non-Severable
Improvement, the Owner Lessor, the Lease Indenture Trustee and the Pass
Through Trustees agree to cooperate with Midwest to (a) issue Additional
Lessor Notes under the Lease Indenture to finance such Improvement which will
rank pari passu with the Lessor Notes then outstanding; and (b) execute and
deliver an amendment to the Facility Lease to reflect the adjustments
required by clause (v) below; PROVIDED, HOWEVER, that the Owner Participant
shall have been given the opportunity, but shall have no obligation, to
provide all or part of the funds required to finance the Owner Lessor's
Percentage of any such Improvement by making an Additional Equity Investment
in such amount, if any, as it may determine in its sole discretion. Midwest
shall have no obligation to accept and the Owner Participant shall not be
obligated to provide such Additional Equity Investment. The obligation to
finance such Improvement through the issuance of Additional Lessor Notes (any
financing of Improvements through the issuance of such Additional Lessor
Notes being called a "SUPPLEMENTAL FINANCING") is subject to the limitations
on incurrence of additional Indebtedness set forth in the Operative Documents
and the following additional conditions:

                                    (i)     there shall be no more than one such
         financing in any calendar year;

                                    (ii)    Improvements shall be made in
         compliance with the Operative Documents;

                                    (iii)   such Improvement is a Required
         Improvement;

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                                    (iv)     the Additional Lessor Notes shall
         have a final maturity date no later than the expiration date of the
         Basic Lease Term or any Renewal Term then in effect or already elected
         by Midwest and will be fully repaid out of additional Basic Lease Rent
         or Renewal Rent and Termination Value as adjusted pursuant to the
         Operative Documents;

                                    (v)      appropriate adjustments to Basic
         Lease Rent and Termination Value (determined without regard to any tax
         benefits associated with such Improvements, unless the Owner Partic-
         ipant is making an Additional Equity Investment) shall also be made to
         protect the Owner Participant's Expected Return;

                                    (vi)     EME shall have paid, on an
         After-Tax Basis, all reasonable out-of-pocket costs and expenses of the
         Lease Financing Parties, including the reasonable fees and expenses of
         counsel to the Owner Participant, the Owner Lessor, the Owner Trustee,
         the Lease Indenture Trustee, the Lease Indenture Company in its
         individual capacity, the Pass Through Trustees and the Pass Through
         Company in its individual capacity, in each case to the extent incurred
         in connection with any financing or refinancing pursuant to this
         SECTION 14;

                                    (vii)    no Lease Event of Default shall
         have occurred and be continuing unless the Improvements to be
         constructed with the proceeds of the Additional Lessor Notes shall cure
         such Lease Event of Default, and any such Improvements shall be made in
         compliance with the Operative Documents;

                                    (viii)   the sum of (y) the principal amount
         of such Additional Lessor Notes and (z) the principal amount of all
         comparable additional lessor notes used to finance such Improvements
         pursuant to the Other Facility Lease, is not less than $20 million and
         not greater than 100% of the cost of the Improvements being financed;
         PROVIDED that the sum of (I) the outstanding balance of the Lessor
         Notes and (II) all comparable lessor notes issued and outstanding of
         the Other Owner Lessor under the lease indenture to which

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<PAGE>

         such Other Owner Lessor are party never exceeds (x) 90% of the lesser
         of (1) the fair market value of the Facility taking into account such
         Improvements, as determined pursuant to the Appraisal Procedure, and
         (2) the sum of (t) the Purchase Price, (u) the comparable purchase
         price for the Other Undivided Interest and (v) the cost of the
         Improvement being financed;

                                    (ix)    the Owner Participant shall have re-
         ceived a favorable opinion reasonably satisfactory to it from Hunton &
         Williams, or from nationally recognized tax counsel selected by the
         Owner Participant and reasonably acceptable to EME, to the effect that
         such financing would not result in any material indemnified, or any
         unindemnified, incremental tax risk to the Owner Participant;

                                    (x)      the Owner Participant shall not
         suffer any material adverse accounting effects under GAAP as a result
         of providing such additional financing;

                                    (xi)     the cost of the Improvement,
         together with the cost of all previous Improvements financed with
         Additional Lessor Notes is not greater than 25% of the sum of (x) the
         Purchase Price and (y) the comparable purchase price for the Other
         Undivided Interest; unless the Facility Lessee shall have received
         confirmation that after giving effect to the financing in connection
         with such Improvement, the Lease Debt rating will not fall below BBB-
         or Baa3 from S&P and Moody's, respectively;

                                    (xii)    Midwest and EME shall have made or
         delivered such representations, warranties, covenants, opinions or
         certificates as the Owner Participant may reasonably request; and

                                    (xiii)   such Additional Lessor Notes are
         issued pursuant to and in accordance with SECTION 2.13 of the Lease
         Indenture and Midwest and EME shall have delivered such certificates,
         reports and other documents and shall have taken all other actions
         which are required to be delivered or taken by them pursuant to SECTION
         2.13 of the Lease Indenture.

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<PAGE>

         Notwithstanding the prior provision dealing with the financing of
Improvements through the Facility Lease, Midwest shall at all times have the
right to finance Improvements to the Facility other than through the Facility
Lease; PROVIDED that Improvements may only be financed other than through the
Facility Lease if such financing would not result in any Lien on the Facility
or the Facility Land and shall be subject to the limitations on incurrence of
additional Indebtedness contained in the other Operative Documents; PROVIDED
FURTHER, that providers of financing for such Improvements made other than
through the Facility Lease agree to be bound by Section 18.19 of this
Agreement and by the Subordination Agreement; PROVIDED FURTHER, that Required
Improvements and Non-Severable Improvements shall automatically, upon being
affixed to the Facility, become the property of the Owner Lessor and subject
to the Facility Lease.

         SECTION 14.2 OPTIONAL REFINANCING OF LESSOR NOTES. Midwest will have
the right, exercisable on no more than three occasions, for as long as no
Material Lease Default or Lease Event of Default shall have occurred and be
continuing, to request the Owner Lessor, and the Owner Lessor shall
reasonably consider and shall not unreasonably refuse, to refund or refinance
the Lessor Notes, in the public or private market, in whole but not in part,
through the issuance of new notes to the public (notes issued in such
refinancing, the "NEW LESSOR NOTES"), to a pass through trust or to such
other funding vehicles as may be used at that time or to any other party that
is not the Facility Lessee or any Affiliate thereof; PROVIDED that any
refinancing under this SECTION 14.2 shall also be subject to satisfaction of
the following conditions:

                                    (i)      the Owner Lessor shall be able to
         issue and sell the New Lessor Notes in an amount adequate to accomplish
         such refunding or refinancing;

                                    (ii)    the Owner Participant shall receive
         an opinion reasonably satisfactory to it from Hunton & Williams or from
         nationally recognized tax counsel selected by the Owner Participant and
         reasonably acceptable to the Facility Lessee and EME, to the effect
         that such refinancing (as opposed to the right to request such
         refinancing) would not result in any material indemnified or any
         unindemnified incremental tax risk to the Owner Participant (including
         tax risks relating to the classification of the Lessor Notes as

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<PAGE>

         qualified nonrecourse indebtedness; PROVIDED, HOWEVER, that absent a
         change in law or judicial, administrative or legislative interpretation
         thereof after the Closing Date, there would not be incremental tax risk
         with respect to the allocation of interest expense for foreign tax
         credit purposes from a refinancing consummated in accordance with the
         provisions set forth below);

                                    (iii)   all documentation in connection with
         such refinancing shall be reasonably satisfactory to the Owner Lessor,
         the Owner Trustee, and the Owner Participant and conditions set forth
         therein shall be met;

                                    (iv)     the Owner Participant shall be
         entitled to a consent fee of $25,000 in connection therewith;

                                    (v)      the refinancing shall not result in
         any other material adverse effect on the rights or interests of the
         Owner Lessor or the Owner Participant;

                                    (vi)     New Lessor Notes shall be issued in
         compliance with Section 467 of the Code and any proposed, temporary,
         or final regulation thereunder, in each case as modified and in effect
         on the date of such issuance.

                                    (vii)    all necessary authorizations,
         approvals and consents in connection with such refinancing shall have
         been obtained from each Person whose authorization, approval or consent
         is necessary to consummate such refinancing with respect to the
         Facility Lessee, the Owner Lessor, the Lease Indenture Trustee and the
         Pass Through Trustees, and such authorizations, approvals and consents
         shall be in full force and effect on the closing date of such
         refinancing;

                                    (viii)  the consummation of the transactions
         contemplated by the refinancing shall not cause the Owner Participant
         to account for the transactions contemplated by the Operative Docu-
         ments as other than a "leveraged lease" under FAS 13;

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<PAGE>

                                    (ix)    all payment dates for principal and
         interest payments on the New Lessor Notes shall become Rent Payment
         Dates;

                                    (x)      on the closing date of such
         refinancing, each of the Facility Lessee, the Owner Lessor and the
         Lease Indenture Trustee shall have executed and delivered all
         appropriate supplements to the Operative Documents that are necessary
         to consummate such refinancing, in form and substance reasonably
         satisfactory to the Owner Lessor and the Lease Indenture Trustee;

                                    (xi)    each of the Owner Lessor, the Owner
         Participant, the Lease Indenture Trustee and the Pass Through Trustees
         shall have received an opinion of counsel for the Facility Lessee on
         such matters as they may reasonably request and in form and substance
         reasonably satisfactory to the Owner Participant and the Lease
         Indenture Trustee;

                                    (xii)    Midwest and EME shall have
         delivered such certificates, reports and other documents and shall have
         taken all other actions which are required to be delivered or taken by
         them pursuant to SECTION 2.13 of the Lease Indenture;

                                    (xiii)  each of the Owner Lessor, the Owner
         Participant and the Lease Indenture Trustee shall have received from
         the Facility Lessee a certificate dated the date of the issuance of the
         New Lessor Notes executed on behalf of the Facility Lessee by an
         Authorized Officer thereof stating that all conditions precedent to the
         issuance of such New Lessor Notes have been satisfied or waived;

                                    (xiv)   the consummation of any transaction
         contemplated by such refinancing shall not violate any Requirements of
         Law except to the extent that such non-compliance with the Requirements
         of Law would not have a material adverse effect on the Owner Lessor.

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<PAGE>

                                    (xv)     the New Lessor Notes shall have a
         final maturity date no later than six months after the stated maturity
         date of the Initial Lessor Notes as set forth in Section 2.4 of the
         Lease Indenture and the weighted average life to maturity of the New
         Lessor Notes shall not vary from the remaining weighted average
         life-to-maturity of the Lessor Notes (immediately prior to such
         refinancing) by more than six months;

                                    (xvi)    the principal amount of the New
         Lessor Notes shall not exceed by more than 5 percent the remaining
         principal amount of the Lessor Notes (immediately prior to such
         refinancing);

                                    (xvii)   the New Lessor Notes shall satisfy
         the requirements of Temp. Treas. Reg. Section 1.861 - 10T(b)(2)(iii),
         (iv) and (v) and not be excluded by reason of Temp. Treas. Reg.
         Section 1.861 - 10T(b)(4); and

                                    (xviii)  if New Lessor Notes are not issued
         under the Lease Indenture, the holders of New Lessor Notes must agree
         to be bound by Section 18.19 of this Agreement and by the Subordination
         Agreement.

         SECTION 14.3      COOPERATION. The Owner Participant will cooperate
with and reasonably assist Midwest in connection with any refinancing and/or
assumption of the Lessor Notes, so long as such refinancing is in accordance
with the terms of the Operative Documents. The Owner Participant will execute
such agreements and documents as may be necessary with respect to any such
refinancing and will instruct the Owner Lessor to act accordingly. Nothing
contained in this SECTION 14 shall limit Midwest's right to request a
refinancing in accordance with SECTION 14.2, above, refinance the Lessor Notes
and to make corresponding changes to Basic Lease Rent and the Termination Value
in accordance with the rent adjustment provisions set forth in SECTION 3 of the
Facility Lease.

SECTION XV  PRE-CLOSING ADJUSTMENTS TO BASIC LEASE RENT AND
            TERMINATION VALUE

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                           (a)      Prior to or on the Closing Date, Basic Lease
Rent and Termination Values, the Equity Portion of Basic Lease Rent and the
Equity Portion of Termination Value (and the allocations of Basic Lease Rent and
467 Fixed Rent) shall be adjusted, either upward or downward, in accordance with
the Facility Lease:

                                    (i)      to re-optimize the loans evidenced
         by the Initial Lessor Notes; and

                                    (ii)    to reflect any changes in the
         Pricing Assumptions, including, without limitation, (x) the initial
         interest rate on any of the Lessor Notes which is different from the
         applicable interest rate under the Initial Lessor Notes set forth in
         the Pricing Assumptions, (y) an increase in the Maximum Transaction
         Costs amount assumed in the Pricing Assumptions, unless Midwest has
         elected to pay such increase, and (z) a Closing Date other than the
         Scheduled Closing Date; and

                                    (iii)    to reflect any enactment,
         promulgation, release or adoption of, amendment to or change in the
         Code, Treasury Regulations, Revenue Rulings or Revenue Procedures ("TAX
         LAW CHANGE") enacted prior to the Closing;

PROVIDED that if any adjustment required by this paragraph would cause (x) on
an After-Tax Basis the present value of Basic Lease Rent as a percentage of the
Purchase Price discounted at 6% per annum to increase by more than 100 basis
points or (y) the total Basic Lease Rent to increase by more than 2.0%, Midwest
shall not be obligated to close the Overall Transaction.

                           (b)      Any adjustment pursuant to this SECTION 15
shall be calculated (A) so as not to negatively affect the Owner Participant's
Expected Return through the Basic Lease Term and (B) to maintain operating lease
treatment for EME; PROVIDED, HOWEVER, that to the extent it is not possible as
the transaction is then structured to achieve both (A) and (B), the Owner Trust,
the Owner Participant and Midwest shall work in good faith to restructure the
transaction in a manner which would achieve both results; and PROVIDED, FURTHER,
that to the extent consistent with preserving both such objectives, all
adjustments shall at the option of Midwest be calculated to (x) minimize the
average annual Basic Lease Rent over the Basic Lease

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Term for Midwest's GAAP accounting purposes and/or (y) minimize, to the extent
possible, the present value to Midwest of the Basic Lease Rent; and PROVIDED,
FURTHER, that to the extent that any adjustment pursuant to this SECTION 15
fails to maintain operating lease treatment for EME, EME shall not be obligated
to close the Overall Transaction. Adjustments will be made using the same
method of computation, assumptions and pricing constraints originally used
(other than those that have changed as the result of the event giving rise to
the adjustment) in the calculation of the Basic Lease Rent (and the allocation
of Basic Lease Rent and 467 Fixed Rent) and corresponding adjustments to
Termination Values will be made. Adjustments may not result in a book loss to
the Owner Participant in the year of adjustment and will be computed by the
Owner Participant (or the Equity Investor if prior to the Closing Date) based
upon the Tax Assumptions and the Pricing Assumptions used to calculate the
Basic Lease Rent and Termination Values and shall be subject to verification
procedure set forth in the Facility Lease.

SECTION XVI  RIGHT OF FIRST REFUSAL; RIGHT OF FIRST OFFER

         SECTION 16.1      RIGHT OF FIRST OFFER. In the event the Owner
Participant desires to sell, lease, convey or otherwise transfer some or all of
its Beneficial Interest other than to an Affiliate of the Owner Participant
(other than in connection with the exercise of remedies following a Lease Event
of Default) prior to the expiration of the Facility Lease Term, the Owner
Participant must first offer to sell such Beneficial Interest to the Facility
Lessee on the terms and conditions set forth in this SECTION 16.1. Such offer
shall be made to the Facility Lessee in the form of a proposed term sheet,
which proposed term sheet shall include an outline of the price and of the
terms, conditions and provisions upon which the Owner Participant would be
willing to transfer such Beneficial Interest or any part thereof. The Facility
Lessee will thereafter have the right within a period of forty-five (45) days
from and after the receipt by the Facility Lessee of such proposed term sheet
to notify the Owner Participant of its intent to exercise its right to purchase
hereunder. If the Facility Lessee elects to exercise the right provided in the
preceding sentence, it shall within 60 days of such notice purchase, and the
Owner Participant shall sell, the Beneficial Interest on the same terms and
conditions as the offer giving rise to such right. If the Facility Lessee does
not give such notice to the Owner Participant within the forty-five (45) day
period or does not purchase the Beneficial Interest within 60 days of such
notice, the Owner Participant will be free to so sell, lease, convey or
otherwise transfer such Beneficial Interest, or a portion thereof, at a price

                        -------------------------------------
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<PAGE>

no less than the price set forth in the proposed term sheet and on terms and
conditions, taken as a whole, that, other than in an immaterial respect, are
no less favorable to the Owner Participant than the terms and conditions set
forth in the proposed term sheet, unless the failure to purchase the Beneficial
Interest within 60 days is attributable to the Owner Participant. In the event
that the terms or conditions are revised in any way that the price is reduced
or any of the other terms and conditions thereof, taken as a whole change the
agreement for sale, lease, conveyance or transfer such that the terms and
conditions of any such subsequent transaction are less favorable, other than in
an immaterial respect, to the Owner Participant, the Owner Participant must
again comply with the notice and acceptance provisions of this SECTION 16.1. It
is understood and agreed among the parties hereto that the transaction
contemplated by this SECTION 16.1 shall not effect a merger of the Facility
Lessee's ownership interest in the Facility and the Facility Site with the
Owner Lessor's Interest.

         SECTION 16.2      RIGHT OF FIRST REFUSAL. In the event the Owner
Participant desires to sell, lease, convey or otherwise transfer some or all of
its Beneficial Interest or cause the Owner Lessor to sell, lease, convey or
otherwise transfer its Owner Lessor's Interest at any time within three years
after expiration or termination of the Facility Lease (other than pursuant to
SECTION 13 and 14 of the Facility Lease) to any Person other than an Affiliate
of the Owner Participant, the Facility Lessee or an Affiliate thereof, the
Facility Lessee shall have the right, unless such sale, lease, conveyance or
transfer is in connection with the exercise of remedies upon a Lease Event of
Default, to purchase, lease or otherwise acquire such interest on the terms and
conditions set forth in the bid that the Owner Participant intends to accept.
The Owner Participant shall give the Facility Lessee prompt written notice of
all bona fide offers that have been received from any other Person to purchase
or acquire the Owner Lessor's Interest or Owner Participant's Beneficial
Interest or any part of either during such three-year period following the
expiration or termination of the Facility Lease, and which offers it wishes to
accept, together with a full and complete statement of the price and all of the
material terms, conditions and provisions contained in such offers. The
Facility Lessee shall thereafter have the right within a period of forty-five
(45) days from and after the receipt by the Facility Lessee of such notice to
notify the Owner Participant of its intent to exercise its rights of first
refusal. If the Facility Lessee elects to exercise the right provided in the
preceding sentence, it shall within 60 days of such notice purchase, and the
Owner Participant shall sell, the Beneficial Interest on the same terms and
conditions as the offer giving rise to such right. If the Facility Lessee does
not give such notice to the Owner

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<PAGE>

Participant within the forty-five (45) day period or does not purchase the
Beneficial Interest within sixty (60) days of such notice, the Owner
Participant shall be free to proceed under the terms and conditions as set
forth in its irrevocable notice to the Facility Lessee, unless the failure to
purchase the Beneficial Interest within sixty (60) days is attributable to the
Owner Participant. In the event that the terms or conditions are revised in
any way that changes the agreement for sale, lease, conveyance or transfer such
that the terms and conditions thereof, other than in immaterial respects, are
less favorable to the Owner Participant (including any reduction in price or a
change in the terms of payment thereof in a manner that is beneficial to the
potential purchaser), the Owner Participant must again comply with the notice
and acceptance provisions of this SECTION 16.2. In connection with the Facility
Lessee's exercise of the right of first refusal pursuant to this SECTION 16.2
with respect to the Owner Lessor's Interest, the Ground Interest shall be
conveyed to the Facility Lessee.

SECTION XVII   SPECIAL LESSEE TRANSFER

         In the case of a Regulatory Event of Loss or Burdensome Buyout Event
under the Facility Lease, the Facility Lessee (or its designee), so long as the
Facility Lessee shall remain liable under the Facility Lease to pay Basic Lease
Rent and all other payments under the Facility Lease, upon not less than 30
days' written notice to the Owner Participant and the Lease Indenture Trustee,
on the applicable Termination Date, may purchase the Owner Participant's
Beneficial Interest, or, in the case of a Burdensome Buyout Event, the
membership interest in the Owner Participant, and keep the Facility Lease in
place; PROVIDED, that (i) the Owner Participant shall not suffer any detriment
(including tax or book consequences) from such purchase (as compared to that
which would have resulted had the Facility Lessee terminated the Facility Lease
and purchased the Owner Lessor's Interest), (ii) the Facility Lessee satisfies
the transferee requirements contained in SECTION 12.1 hereof applicable to
transfers by the Owner Participant, if applicable and (iii) EME pays all
expenses incurred by the other Lease Financing Parties in connection therewith.
If the Facility Lessee chooses to purchase the Owner Participant's Beneficial
Interest or the membership interest in the Owner Participant, as the case may
be, pursuant to the preceding sentence, on the applicable Termination Date, EME
(or its designee) shall pay to the Owner Participant or to the Equity Investor,
as the case may be, the Special Lessee Transfer Amount determined as of such
date, plus all amounts due and payable to the Owner Participant or Equity
Investor, as the case may be, on such date under the Operative Documents.

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<PAGE>

         Concurrently with the payment of all sums required to be paid pursuant
to this SECTION 17 (or on such later date of transfer of the Owner
Participant's Beneficial Interest or membership interest in the Owner
Participant, as the case may be, in accordance with clause (ii) below) (i) the
Facility Lessee shall cease to have any liability to the Owner Participant with
respect to the Operative Documents, except for obligations surviving pursuant
to the express terms of any Operative Document or which have otherwise accrued
but not been paid as of such date and (ii) the Owner Participant or the Equity
Investor, as the case may be, will transfer (by an appropriate instrument of
transfer in form and substance reasonably satisfactory to the Owner Lessor and
prepared and recorded at EME's expense) the Owner Participant's Beneficial
Interest or membership interest in the Owner Participant, as the case may be,
to the Facility Lessee (or its designee); PROVIDED, HOWEVER, that if the Lien
of the Lease Indenture has not been terminated or discharged, such transfer
shall not be made to the Facility Lessee, but shall be made to the Facility
Lessee's designee promptly upon the Facility Lessee's designation of such
designee and such designee will agree not to transfer the Owner Participant's
Beneficial Interest or the membership interest in the Owner Participant, as
the case may be, to the Facility Lessee until such Lien is discharged. The
Owner Participant or Equity Investor, as the case may be, shall make any
transfer under this SECTION 17 on an "as is," "where is" basis, without
warranty other than as to the absence of Owner Lessor's Liens and Owner
Participant's Liens on the Owner Participant's Beneficial Interest or the
membership interest in the Owner Participant, as the case may be. It is
understood and agreed among the parties hereto that the transaction
contemplated by this SECTION 17 shall not effect a merger of the Facility
Lessee's leasehold interest in the Facility and subleasehold interest in the
Facility Site with the Owner Lessor's Interest. EME will pay all reasonable
costs and expenses of the Lease Financing Parties in connection with any
transfer pursuant to this SECTION 17. Subsequent to such transfer, the Facility
Lessee and the Owner Lessor may, without the consent of the Lease Indenture
Trustee or the Pass Through Trustees, waive the Regulatory Event of Loss or
Burdensome Buyout Event that gave rise to the right to purchase the Owner
Participant's Beneficial Interest or the membership interest in the Owner
Participant, as the case may be, and the Facility Lease shall continue in full
force and effect in accordance with its terms.

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SECTION XVIII   MISCELLANEOUS

         SECTION 18.1      CONSENTS. The Owner Participant covenants and agrees
that it shall not unreasonably withhold its consent to any consent requested of
the Owner Lessor under the terms of the Operative Documents that by its terms
is not to be unreasonably withheld by the Owner Lessor.

         SECTION 18.2      SUCCESSOR OWNER LESSOR. The parties hereto agree
that the transfer or assignment pursuant to the terms of the Trust Agreement by
the Owner Lessor to a successor Owner Lessor, pursuant to the trust created
thereunder, will not violate the terms of any Operative Document.

         SECTION 18.3      BANKRUPTCY OF TRUST ESTATE. If (i) all or any part
of the Trust Estate becomes the property of a debtor subject to the
reorganization provisions of Title 11 of the United States Code, as amended
from time to time, (ii) pursuant to such reorganization provisions the Owner
Participant is required, by reason of the Owner Participant being held to have
recourse liability to the debtor or the trustee of the debtor directly or
indirectly, to make payment on account of any amount payable as principal or
interest on the Lessor Notes, and (iii) the Lease Indenture Trustee actually
receives any Excess Amount, as defined below, which reflects any payment by the
Owner Participant on account of clause (ii) above, the Lease Indenture Trustee
shall promptly refund to the Owner Participant such Excess Amount. For purposes
of this SECTION 18.3, "EXCESS AMOUNT" means the amount by which such payment
exceeds the amount which would have been received by the Lease Indenture
Trustee if the Owner Participant had not become subject to the recourse
liability referred to in clause (ii) above. Nothing contained in this SECTION
18.3 shall prevent the Lease Indenture Trustee from enforcing any personal
recourse obligations (and retaining the proceeds thereof) of the Owner
Participant as contemplated by this Agreement (other than referred to in clause
(ii)).

         SECTION 18.4      AMENDMENTS AND WAIVERS. No term, covenant, agreement
or condition of this Agreement may be terminated, amended or compliance
therewith waived (either generally or in a particular instance, retroactively
or prospectively) except by an instrument or instruments in writing, executed
by each party hereto.

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         SECTION 18.5      NOTICES. Unless otherwise expressly specified or
permitted by the terms hereof, all communications and notices provided for
herein shall be in writing or by a telecommunications device capable of
creating a written record, and any such notice shall become effective (a) upon
personal delivery thereof, including, without limitation, by overnight mail or
courier service, (b) in the case of notice by United States mail, certified or
registered, postage prepaid, return receipt requested, upon receipt thereof, or
(c) in the case of notice by such a telecommunications device, upon
transmission thereof, PROVIDED such transmission is promptly confirmed by
either of the methods set forth in clauses (a) or (b) above, in each case
addressed to each party hereto at its address set forth below or, in the case
of any such party hereto, at such other address as such party may from time to
time designate by written notice to the other parties hereto:

         If to Midwest:

                           One Financial Place
                           440 South LaSalle Street, Suite 3500
                           Chicago, IL  60605
                           Facsimile No.: (312) 583-6111
                           Attention:  President
                           with a copy to EME at the address below

         If to EME:

                           18101 Von Karman Avenue
                           Suite 1700
                           Irvine, CA  92612
                           Facsimile No.: (949) 752-1420
                           Attention:  General Counsel

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<PAGE>

         If to the Owner Lessor, the Owner Trustee or the Trust Company:

                           Wilmington Trust Company
                           Rodney Square North
                           1100 North Market Street
                           Wilmington, Delaware  19890-0001
                           Telephone No.: (302) 651-1000
                           Facsimile No.  (302) 651-8882
                           Attention: Corporate Trust Administration
                           with a copy to the Owner Participant

         If to the Owner Participant:

                           Powerton Generation I, LLC
                           c/o PSEG Resources Inc.
                           80 Park Plaza, Suite T-22
                           Newark, NJ  07101
                           Telephone No.: (973) 456-3560
                           Facsimile No.: (973)-456-3569
                           Attention:   President

         If to the Lease Indenture Trustee or the Lease Indenture Company:

                           United States Trust Company of New York
                           114 West 47th Street, 25th Floor
                           New York, New York 10036
                           Facsimile No.:  (212) 852-1625
                           Attention: Christopher J. Grell, Vice President

         If to Pass Through Trustees or the Pass Through Company:

                           United States Trust Company of New York
                           114 West 47th Street, 25th Floor
                           New York, New York 10036
                           Facsimile No.: (212) 852-1625
                           Attention: Christopher J. Grell, Vice President

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A copy of all notices provided for herein shall be sent by the party giving
such notice to each of the other parties hereto. In addition, Midwest and EME,
without duplication, shall (unless otherwise directed by the applicable Rating
Agency) provide to each Rating Agency a copy of any information, report or
notice it gives to the Lease Indenture Trustee hereunder or any other Operative
Documents.

         SECTION 18.6      SURVIVAL. All warranties, representations,
indemnities and covenants made by any party hereto, herein or in any
certificate or other instrument delivered by any such party or on the behalf of
any such party under this Agreement shall be considered to have been relied
upon by each other party hereto and shall survive the consummation of the
transactions contemplated hereby and in the other Operative Documents
regardless of any investigation made by any such party or on behalf of any such
party. In addition, the indemnifications by EME under SECTIONS 12.1 and 12.2 of
this Agreement shall, subject to SECTIONS 12.1(b) and 12.2(b), respectively,
expressly survive the expiration or early termination (in either case, for
whatever reason) of the Facility Lease or the transfer or other disposition
(including by resignation and removal) of the respective interests of the Owner
Participant, the Owner Lessor, the Trust Company, the Owner Trustee and the
Lease Indenture Company, the Lease Indenture Trustee, the Pass Through Trustees
and the Pass Through Company in, to and under this Agreement and other
Operative Documents.

         SECTION 18.7      SUCCESSORS AND ASSIGNS. This Agreement shall be
binding upon and shall inure to the benefit of, and shall be enforceable by,
the parties hereto and their respective successors and assigns as permitted by
and in accordance with the terms hereof, including each successive holder of
the Owner Participant's Beneficial Interest permitted under SECTION 10.1.
Except as expressly provided herein or in the other Operative Documents, no
party hereto may assign its interests herein without the consent of the other
parties hereto.

         SECTION 18.8      GOVERNING LAW. This Agreement has been delivered in
the State of New York and shall be in all respects governed by and construed in
accordance with the laws of the State of New York including all matters of
construction, validity and performance without giving effect to the conflicts
of laws provisions thereof except New York General Obligations Law Section
5-1401.

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         SECTION 18.9      SEVERABILITY. If any provision hereof shall be
invalid, illegal or unenforceable under Requirement of Law, the validity,
legality and enforceability of the remaining provisions hereof shall not be
affected or impaired thereby.

         SECTION 18.10     COUNTERPARTS. This Agreement may be executed in any
number of counterparts, each executed counterpart constituting an original but
all together only one agreement.

         SECTION 18.11     HEADINGS AND TABLE OF CONTENTS. The headings of the
sections of this Agreement and the Table of Contents are inserted for purposes
of convenience only and shall not be construed to affect the meaning or
construction of any of the provisions hereof.

         SECTION 18.12     LIMITATION OF LIABILITY.

                           (a)      None of the Owner Participant, the Owner
Lessor, the Owner Trustee, the Trust Company, the Lease Indenture Company, the
Lease Indenture Trustee, the Pass Through Trustees or the Pass Through Company
shall have any obligation or duty to Midwest, EME or to others with respect to
the transactions contemplated hereby, except those obligations or duties
expressly set forth in this Agreement and the Operative Documents, and neither
the Owner Lessor, the Owner Participant, the Owner Trustee, the Trust Company,
the Lease Indenture Company, the Lease Indenture Trustee, the Pass Through
Trustees or the Pass Through Company shall be liable for performance by any
other party hereto of such other party's obligations or duties hereunder.
Without limitation of the generality of the foregoing, under no circumstances
whatsoever shall the Owner Participant be liable to Midwest, EME, the Lease
Indenture Trustee, the Pass Through Trustees or the Pass Through Company for
any action or inaction on the part of the Owner Lessor or the Owner Trustee in
connection with the transactions contemplated herein, whether or not such
action or inaction is caused by willful misconduct or gross negligence of the
Owner Lessor, unless such action or inaction is at the written direction of the
Owner Participant.

                           (b)      The Trust Company is executing the
Operative Documents to which it is a party solely as trustee under the Trust
Agreement and not in its individual capacity, except as expressly provided
herein or therein, and in no case whatsoever shall the Trust Company be
personally liable for, or for any loss in

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<PAGE>

respect of, any of the statements, representations, warranties, agreements or
obligations of the Owner Lessor or the Owner Trustee hereunder or under any
other Operative Document, as to all of which the other parties hereto agree to
look solely to the Trust Estate; PROVIDED, HOWEVER, that the Trust Company
shall be liable hereunder for its own gross negligence or willful misconduct or
for a breach of its representations, warranties and covenants made in its
individual capacity.

                           (c)      The Lease Indenture Company and the Pass
Through Company are each entering into the Operative Documents to which they
are parties solely as trustees under the Lease Indenture and the Pass Through
Trust Agreement, respectively, and not in their individual capacities, except
as expressly provided herein or therein, and in no case whatsoever shall the
Lease Indenture Company or the Pass Through Company be personally liable for,
or for any loss in respect of, any of the statements, representations,
warranties, agreements or obligations of the Owner Lessor hereunder or under
any other Operative Document, as to all of which the other parties hereto agree
to look solely to the Trust Estate and the Indenture Estate; PROVIDED, HOWEVER,
that such party shall be liable hereunder for its own gross negligence, willful
misconduct, bad faith or a breach of its representations, warranties and
covenants made in its individual capacity.

                           (d)      The right of the Lease Indenture Company or
the Pass Through Company to perform any discretionary act enumerated herein or
in any other Operative Document (including, without limitation, the right to
consent to any action which requires its consent and the right to waive any
provision of, or consent to any change or amendment to, any of the Operative
Documents) shall not be construed as a duty, and neither the Lease Indenture
Company nor the Pass Through Company shall be accountable or liable for other
than its gross negligence, willful misconduct or bad faith in the performance
or non-performance of such acts. In connection with any such discretionary
acts, the Lease Indenture Trustee may in its own judgement (but shall not,
except as otherwise provided in the Lease Indenture or as otherwise required by
Requirement of Law, have any obligation to) request in writing the approval of
the Pass Through Trustees as holders of Lessor Notes and each Pass Through
Trustee may in its sole discretion (but shall not, except as otherwise provided
for in the Operative Documents or as otherwise required by Requirement of Law,
have any obligation to) request the approval of the holders of the Certificates.

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                           (e)      The Owner Participant will give Midwest and
EME at least 15 days' prior notice of any proposed amendment or supplement to
the Trust Agreement (other than amendments solely effecting a transfer of the
Owner Participant's interest in the Trust Estate or with respect to
administrative matters) and deliver true, complete and fully executed copies to
Midwest and EME of any amendment or supplement to the Trust Agreement. No
amendment or supplement to the Trust Agreement that could materially adversely
affect the interests of the Lease Indenture Trustee or the Pass Through
Trustees shall become effective without the prior written consent of the Lease
Indenture Trustee or the Pass Through Trustees, as applicable.

         SECTION 18.13     CONSENT TO JURISDICTION; WAIVER OF TRIAL BY JURY,
PROCESS AGENT.

                           (a)      Each of the parties hereto (i) hereby
irrevocably submits to the nonexclusive jurisdiction of the Supreme Court of
the State of New York, New York County (without prejudice to the right of any
party to remove to the United States District Court for the Southern District
of New York) and to the nonexclusive jurisdiction of the United States District
Court for the Southern District of New York for the purposes of any suit,
action or other proceeding arising out of this Agreement, the other Operative
Documents, or the subject matter hereof or thereof or any of the transactions
contemplated hereby or thereby brought by any of the parties hereto or their
successors or assigns; (ii) hereby irrevocably agrees that all claims in
respect of such action or proceeding may be heard and determined in such New
York State court, or in such federal court; and (iii) to the extent permitted
by Requirement of Law, hereby irrevocably waives, and agrees not to assert, by
way of motion, as a defense, or otherwise, in any such suit, action or
proceeding any claim that it is not personally subject to the jurisdiction of
the above-named courts, that the suit, action or proceeding is brought in an
inconvenient forum, that the venue of the suit, action or proceeding is
improper or that this Agreement, the other Operative Documents, or the subject
matter hereof or thereof may not be enforced in or by such court.

                           (b)      TO THE EXTENT PERMITTED BY REQUIREMENT OF
LAW, EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES THE RIGHT TO DEMAND
A TRIAL BY JURY, IN ANY SUCH SUIT, ACTION OR OTHER PROCEEDING ARISING OUT OF
THIS

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<PAGE>

AGREEMENT, THE OTHER OPERATIVE DOCUMENTS, OR THE SUBJECT MATTER HEREOF OR
THEREOF OR ANY OF THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY BROUGHT BY
ANY OF THE PARTIES HERETO OR THEIR SUCCESSORS OR ASSIGNS.

                           (c)      By the execution and delivery of this
Agreement, Midwest and EME designate, appoint and empower CT Corporation System
as their authorized agent to receive for and on their behalf service of any
summons, complaint or other legal process in any such action, suit or
proceeding in the State of New York for so long as any obligation of Midwest
and EME shall remain outstanding hereunder or under any of the other Operative
Documents. Midwest and EME shall grant an irrevocable power of attorney to CT
Corporation System in respect of such appointment and shall maintain such power
of attorney in full force and effect for so long as any obligation of Midwest
and EME shall remain outstanding hereunder or under any of the Operative
Documents.

         SECTION 18.14     FURTHER ASSURANCES. Each party hereto will promptly
and duly execute and deliver such further documents to make such further
assurances for and take such further action reasonably requested by any party
to whom such first party is obligated, all as may be reasonably necessary to
carry out more effectively the intent and purpose of this Agreement and the
other Operative Documents.

         SECTION 18.15     EFFECTIVENESS. This Agreement has been dated as of
the date first above written for convenience only. This Agreement shall be
effective on the date of execution and delivery by each of the parties hereto.

         SECTION 18.16     MEASURING LIFE. If and to the extent that any of the
options, rights and privileges granted under this Agreement, would, in the
absence of the limitation imposed by this sentence, be invalid or unenforceable
as being in violation of the rule against perpetuities or any other rule or law
relating to the vesting of interests in property or the suspension of the power
of alienation of property, then it is agreed that notwithstanding any other
provision of this Agreement, such options, rights and privileges, subject to
the respective conditions hereof governing the exercise of such options, rights
and privileges, will be exercisable only during (a) the longer of (i) a period
which will end twenty-one (21) years after the death of the last survivor of
the descendants living on the date of the execution of this Agreement of the
following Presidents of the United States: Franklin D. Roosevelt, Harry S.

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<PAGE>

Truman, Dwight D. Eisenhower, John F. Kennedy, Lyndon B. Johnson, Richard M.
Nixon, Gerald R. Ford, James E. Carter, Ronald W. Reagan, George H.W. Bush and
William J. Clinton or (ii) the period provided under the Uniform Statutory Rule
Against Perpetuities or (b) the specific applicable period of time expressed in
this Agreement, whichever of (a) and (b) is shorter.

         SECTION 18.17     NO PARTNERSHIP, ETC. The parties hereto intend that
nothing contained in this Agreement or any other Operative Document shall be
deemed or construed to create a partnership, joint venture or other
co-ownership arrangement by and among any of them.

         SECTION 18.18     RESTRICTIONS ON TRANSFER OF MEMBERSHIP INTEREST.

                           (a)      No OP Member shall, during the Facility
Lease Term, assign, convey or transfer any of its right, title or interest in
the Membership Interest or cause the Owner Participant to issue additional
membership interests without the prior written consent of Midwest and EME and,
for so long as the Lien of the Lease Indenture has not been terminated or
discharged, the Lease Indenture Trustee and the Pass Through Trustees;
PROVIDED, HOWEVER, that an OP Member may assign, convey or transfer all or any
part of its interest in the Membership Interest without such consent to a
Person (the "MEMBER TRANSFEREE"), if the Owner Participant Guaranty shall
remain outstanding and in full force and effect or each of the following condi-
tions shall have been satisfied:

                                    (i)     the Member Transferee shall be
         either (A) an Affiliate of the Owner Participant which does not
         otherwise qualify under clause (B) below provided the Owner
         Participant Guaranty shall remain in full force and effect, or (B) a
         Person which guarantees all of the Owner Participant's obligations
         under the Operative Documents pursuant to a guaranty substantially in
         the form of Exhibit Y hereto and meets the following criteria: (1) the
         tangible net worth of the Member Transferee is at least equal to $75
         million calculated in accordance with GAAP; and (2) unless waived by
         Midwest and EME, and so long as no Material Lease Default or Lease
         Event of Default shall have occurred and be continuing, such Member
         Transferee is not a Competitor (as defined in SECTION 12.1(b)) of, or
         in material litigation with, Midwest or any Affiliate of Midwest;

                                       104

<PAGE>

                                    (ii)    the total number of Unrelated
         Members, after giving effect to such transactions shall not exceed
         three; and

                                    (iii)   the Member Transferee agrees in the
         guaranty or in another written instrument reasonably acceptable to
         Midwest and, for so long as the Lien of the Lease Indenture has not
         been terminated or discharged, the Lease Indenture Trustee and the Pass
         Through Trustees to be bound by this SECTION 18.18 and by provisions of
         SECTION 18.19 of this Agreement.

                           (b)      Neither the Facility Lessee nor EME shall
not be responsible for any adverse tax consequence to the Owner Lessor, the
Owner Participant or the Guarantor resulting from any transfer pursuant to this
SECTION 18.18 and the Pricing Assumptions shall not be changed as a result of
any such transfer.

                           (c)      The OP Member shall give the Owner Lessor,
the Owner Trustee, the Lease Indenture Trustee, the Pass Through Trustees,
Midwest and EME 30 days prior written notice of such transfer, or 10 days in
the case of a transfer to an Affiliate of the Owner Participant, specifying the
name and address of any proposed Member Transferee and such additional
information as shall be necessary to determine whether the proposed transfer
satisfies the requirements of this SECTION 18.18. If requested by the OP
Member, the Owner Participant, the Lease Indenture Trustee or the Pass Through
Trustees, Midwest or EME shall acknowledge qualifying transfers. All reasonable
fees, expenses and charges of the Lease Indenture Trustee, the Pass Through
Trustees, Midwest and EME (including reasonable attorneys' fees and expenses in
connection with any such transfer or proposed transfer), including any of the
foregoing relating to any amendments to the Operative Documents required in
connection therewith, shall be paid by the OP Member, without any right of
indemnification from Midwest, EME, the Lease Indenture Trustee, the Pass
Through Trustees or any other Person; PROVIDED, HOWEVER, that the OP Member
shall have no obligation to pay fees, expenses or charges of Midwest and EME as
a result of any transfer while a Material Lease Default or a Lease Event of
Default is continuing, in which case Midwest or EME shall be obligated to pay
such costs.

                                       105

<PAGE>

                           (d)      Upon any transfer to a Member Transferee
specified in clause (a)(i)(B) of this SECTION 18.18 and compliance with all of
the other provisions of this SECTION 18.18, (i) the Member Transferee shall, to
the extent of the Membership Interest conveyed to the Member Transferee, be
deemed an "OP Member" for purposes of this SECTION 18.18 and the Person
executing the guaranty pursuant to such clause (a)(i)(B) shall be deemed a "OP
Guarantor" for all purposes and each reference in this Agreement and each other
Operative Document to the "OP Guarantor" shall thereafter be deemed to include
such Member Transferee or the Person executing such guaranty, as the case may
be, to the extent of the obligations expressly transferred to the Member
Transferee and guaranteed by such Person, for all purposes and (ii) the
existing OP Guarantor shall be released from all obligations under its Owner
Participant Guaranty to the extent such obligations are expressly guaranteed by
the Member Transferee or such Affiliate; PROVIDED, HOWEVER, that in no event
shall any such transfer waive or release the existing OP Guarantor from any
liability existing immediately prior to or occurring simultaneously with such
transfer. Except as expressly provided in the immediately preceding sentence,
no transfer of any Membership Interest shall effect the obligations of the
existing OP Guarantor under the Owner Participant Guaranty or any other OP
Guarantor under its Owner Participant Guaranty.

                           (e)      Notwithstanding anything herein to the
contrary, any transfer of Membership Interest pursuant to this SECTION 18.18
shall be subject to Midwest's right of first offer and right of first refusal
set forth in SECTION 16.1 and 16.2, respectfully, to the same extent as if such
transfer were a transfer by the Owner Participant of its Beneficial Interest.

         SECTION 18.19     LIMITATION ON CLAIMS AGAINST MIDWEST; SUBORDINATION
OF CLAIMS AGAINST MIDWEST. Notwithstanding any provision to the contrary
contained in this Participation Agreement, the Facility Lease or any other
Operative Document, except as expressly provided in the proviso to this
sentence, claims against Midwest for Rent (including Termination Value) or any
other amounts due and unpaid as at any date to the Lease Financing Parties
under or arising out of any of the Operative Documents (such other amounts,
"OTHER MIDWEST LIABILITIES") (to the extent not paid by EME under the EME
Guarantee or the EME OP Guarantee) shall be limited to the aggregate Free
Cashflow amount attributable to the Fiscal Quarters during which Rent and Other
Midwest Liabilities became due and remain undischarged; PROVIDED that (a) as
set forth in SECTION 17.2 of the Facility Lease, claims shall be permitted

                                       106

<PAGE>

against Midwest for any amounts of Rent (including Termination Value) and Other
Midwest Liabilities due and unpaid to the Lease Financing Parties in excess of
the aggregate Free Cashflow amount attributable to the Fiscal Quarters during
which Rent and Other Midwest Liabilities became due and remain undischarged but
such claims shall be subordinated to Specified Midwest Indebtedness on the
terms and conditions set forth in the Subordination Agreement substantially in
the form attached hereto as Exhibit AA, (b) the EME Note shall be subject to
set-off as contemplated by, and in accordance with, SECTION 8 of the EME Note
and (c) the Guarantor shall be entitled to rights of subrogation as
contemplated by, and in accordance with SECTION 2.05 of the EME Guarantee.
Notwithstanding anything contained in this Participation Agreement, the
Facility Lease or any other Operative Document to the contrary, the Guarantor
shall be liable under the EME Guarantees for any and all Rent (including
Termination Value) or Other Midwest Liabilities due and unpaid and in
accordance with the EME Guarantee and the EME OP Guarantee, subject to the
limitation set forth in SECTION 2.03 of the EME Guarantee, notwithstanding the
limitation on claims against Midwest contained in the preceding sentence. The
Owner Participant, the Owner Trustee, the Equity Investor, the Lease Indenture
Trustee, the Pass Through Trustees and the Guarantor (and by its acceptance of
any Lessor Note, any holder of such Lessor Note and by its acceptance of any
Certificate, any Certificateholder) each acknowledge notice of, and consent in
all respects to the provisions of this SECTION 18.19, SECTION 17.2 of the
Facility Lease and the Subordination Agreement.

         Notwithstanding the foregoing, no provision of this Agreement
(including this SECTION 18.19) or the Subordination Agreement shall limit or
impair, or be deemed to limit or impair, in any way the right of any party to
this Agreement to take (or cause to be taken) any of the following actions: (i)
the giving of any notice necessary to cause a default, breach, failure or
misrepresentation to become a Lease Event of Default, (ii) the declaration of
the Facility Lease to be in default; (iii) the election or exercise of any
remedy arising out of or in connection with a Lease Event of Default (including
making any demand for payment of Termination Value, terminating the Facility
Lease, exercising the rights of the Owner Lessor as owner of the Undivided
Interest or any other remedy under SECTION 17 of the Facility Lease); (iv) the
making of demand for payment of any claim required to be subordinated pursuant
to this SECTION 18.19; and (v) the exercise of any other right or remedy in the
Operative Documents or at law with respect to any claim not constituting a
claim required to be subordinated pursuant to this SECTION 18.19; PROVIDED,
HOWEVER, that in

                                       107

<PAGE>

no event shall any party to this Agreement be entitled to seek to collect or
enforce payment of any amount constituting a claim required to be subordinated
pursuant to this SECTION 18.19.

         SECTION 18.20     GUARANTEED TV AMOUNT. Each party to this Agreement
acknowledges notice of, and consents in all respects to, the terms of the EME
Guarantee, including clause 2.03 of the EME Guarantee which limits obligations
of EME under the EME Guarantee in certain specific instances to the Guaranteed
TV Amount.

                                       108

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed and delivered by their respective officers thereunto duly
authorized.

                             POWERTON TRUST I

                             By:  Wilmington Trust Company,
                                  not in its individual capacity but solely
                                  as Owner Trustee

                             By:   /s/  James P. Lawler
                                  ------------------------------------
                                  Name:   James P. Lawler
                                  Title:  Vice President
                                  Date:   August 24, 2000

                             WILMINGTON TRUST COMPANY,
                             not in its individual capacity,
                             except as expressly provided
                             herein, but solely as Owner
                             Trustee

                             By:   /s/ James P. Lawler
                                  ------------------------------------
                                  Name:   James P. Lawler
                                  Title:  Vice President
                                  Date:   August 24, 2000

                             POWERTON GENERATION I, LLC

                             By:   /s/ Christopher P. Kelleher
                                  ------------------------------------
                                  Name:   Christopher P. Kelleher
                                  Title:  Vice President
                                  Date:   August 24, 2000

<PAGE>

                             EDISON MISSION ENERGY

                             By:   /s/  John P. Finneran
                                  ------------------------------------
                                  Name:   John P. Finneran
                                  Title:  Vice President
                                  Date:   August 24, 2000

                             MIDWEST GENERATION, LLC

                             By:   /s/ Gary Garcia
                                  ------------------------------------
                                  Name:   Gary Garcia
                                  Title:  Treasurer & Vice President
                                  Date:   August 24, 2000

                             UNITED STATES TRUST COMPANY OF
                             NEW YORK,
                             not in its individualcapacity,
                             except to the extent provided
                             herein, but solely as Lease
                             Indenture Trustee under the
                             Lease Indenture

                             By:   /s/  Christopher J. Grell
                                  ------------------------------------
                                  Name:  Christopher J. Grell
                                  Title: Assistant Vice President
                                  Date:  August 24, 2000

<PAGE>

                             UNITED STATES TRUST COMPANY OF
                             NEW YORK,
                             not in its individual capacity,
                             except to the extent provided
                             herein, but as Pass Through
                             Trustee under the Pass Through
                             Trust Agreements

                             By:   /s/ Christopher J. Grell
                                  ------------------------------------
                                  Name:   Christopher J. Grell
                                  Title:  Assistant Vice President
                                  Date:   August 24, 2000

                        POWERTON PARTICIPATION AGREEMENT (T1)

<PAGE>

                                                                      APPENDIX A
                                                                TO PARTICIPATION
                                                                       AGREEMENT

                                   DEFINITIONS

                            APPENDIX A - DEFINITIONS

                                      (T1)

GENERAL PROVISIONS

      In this Appendix A and each Operative Document (as hereinafter defined),
unless, otherwise provided herein or therein:

                    (a)   the terms set forth in this Appendix A or in any such
Operative Document shall have the meanings herein provided for and any term
used in an Operative Document and not defined therein or in this Appendix A but
in another Operative Document shall have the meaning, herein or therein
provided for in such other Operative Document;

                    (b)   any term defined in this Appendix A by reference to
another document, instrument or agreement shall continue to have the meaning
ascribed thereto whether or not such other document, instrument or agreement
remains in effect;

                    (c)   words importing the singular include the plural and
vice versa;

                    (d)   words importing a gender include any gender;

                    (e)   a reference to a part, clause, section, paragraph,
article, party, annex, appendix, exhibit, schedule or other attachment to or in
respect of an

                                       1
<PAGE>

Operative Document is a reference to a part, clause, section, paragraph, or
article of, or a party, annex, appendix, exhibit, schedule or other attachment
to, such Operative Document unless, in any such case, otherwise expressly
provided in any such Operative Document;

                    (f)   a reference to any statute, regulation, proclamation,
ordinance or law includes all statutes, regulations, proclamations, ordinances
or laws varying, consolidating or replacing the same from time to time, and a
reference to a statute includes all regulations, policies, protocols, codes,
proclamations and ordinances issued or otherwise applicable under that statute
unless, in any such case, otherwise expressly provided in any such statute or
in such Operative Document;

                    (g)   a definition of or reference to any document,
instrument or agreement includes an amendment or supplement to, or restatement,
replacement, modification or novation of, any such document, instrument or
agreement unless otherwise specified in such definition or in the context in
which such reference is used;

                    (h)   a reference to a particular section, paragraph or
other part of a particular statute shall be deemed to be a reference to any
other section, paragraph or other part substituted therefor from time to time;

                    (i)   if a capitalized term describes, or shall be defined
by reference to, a document, instrument or agreement that has not as of any
particular date been executed and delivered and such document, instrument or
agreement is attached as an exhibit to the Participation Agreement (as
hereinafter defined), such reference shall be deemed to be to such form and,
following such execution and delivery and subject to paragraph (vii) above, to
the document, instrument or agreement as so executed and delivered;

                    (j)   a reference to any Person (as hereinafter defined)
includes such Person's successors and permitted assigns;

                    (k)   any reference to "days" shall mean calendar days
unless "Business Days" (as hereinafter defined) are expressly specified;

                                       2
<PAGE>

                    (l)   if the date as of which any right, option or election
is exercisable, or the date upon which any amount is due and payable, is stated
to be on a day that is not a Business Day, such right, option or election may
be exercised, and such amount shall be deemed due and payable, on the next
succeeding Business Day with the same effect as if the same was exercised or
made on such date or day and interest shall accrue and be payable with respect
to such payment;

                    (m)   words such as "hereunder," "hereto," "hereof" and
"herein" and other words of similar import shall, unless the context requires
otherwise, refer to the whole of the applicable document and not to any
particular article, section, subsection, paragraph or clause thereof;

                    (n)   a reference to "including" means including without
limiting the generality of any description preceding such term, and for
purposes hereof and of each Operative Document the rule of EJUSDEM GENERIS
shall not be applicable to limit a general statement, followed by or referable
to an enumeration of specific matters, to matters similar to those specifically
mentioned; and

                    (o)   each term defined by reference to the Holdings Credit
Agreement shall have the meaning assigned to such term therein and, following
any amendment to, or restatement or replacement of the Holdings Credit
Agreement, the meaning assigned to such term or the respective correlative
term, as the case may be, in such amendment, restatement or replacement.

                                       3

<PAGE>

DEFINED TERMS

"467 FIXED RENT" shall mean the amount specified as 467 Fixed Rent as set forth
in Schedule 1-3 to the Facility Lease.

"ACCESS ROUTES" shall have the meaning set forth in the recitals to the
Facility Site Lease.

"ADDITIONAL CERTIFICATES" shall mean any additional certificates issued by any
Pass Through Trust in connection with the issuance of Additional Lessor Notes
relating, thereto.

"ADDITIONAL EQUITY INVESTMENT" shall mean the amount, if any, the Owner
Participant shall provide (in its sole and absolute discretion) to finance all
or a portion of the Owner Lessor's Percentage of the cost of any Required
Improvement or Non-Severable Improvement financed pursuant to SECTION 16.1 of
the Participation Agreement.

"ADDITIONAL INSUREDS" shall have the meaning specified in SECTION 11.3 of the
Facility Lease.

"ADDITIONAL LESSOR NOTES" shall have the meaning specified in SECTION 2.13 of
the Lease Indenture.

"AFFILIATE" of any particular Person shall mean any other Person which,
directly or indirectly, controls, is controlled by or is under common control
with such Person (excluding any trustee under, or any committee with
responsibility for administering, any Pension Plan or Welfare Plan). A Person
shall be deemed to be "controlled by" any other Person if such other Person
possesses, directly or indirectly, power to direct or cause the direction of
the management and policies of such Person whether by contract or otherwise;
PROVIDED, HOWEVER, that under no circumstances shall the Trust Company be
considered to be an Affiliate of any of the Owner Lessor, the Owner Trustee, or
the Owner Participant, nor shall any of the Owner Lessor, the Owner Trustee, or
the Owner Participant be considered to be an Affiliate of the Trust Company and
that neither Owner Lessor nor Owner Trustee shall be treated as an Affiliate of
the Owner Participant except that the Owner Lessor will be treated as an
Affiliate of the Owner Participant to the extent that the Owner Lessor acts on
the

                                       4
<PAGE>

express written direction or with the express written consent of the Owner
Participant.

"AFTER-TAX BASIS" shall mean, in the context of determining the amount of a
payment to be made on such basis, the payment of an amount which, after
reduction by the net increase in Taxes of the recipient (actual or
constructive) of such payment, which net increase shall be calculated by taking
into account any reduction in such Taxes resulting from any tax benefits
realized or to be realized by the recipient as a result of such payment, shall
be equal to the amount required to be paid. In calculating the amount payable
by reason of this provision in the case of any person that is a U.S. Person,
all income taxes payable and tax benefits realized or to be realized shall be
determined on the assumptions that (i) the recipient is subject to (a) U.S.
Federal income taxes at the highest marginal rate then applicable to
corporations for the relevant period or periods, and (b) state and local income
taxes at the highest marginal rates then applicable to corporations for the
relevant period or periods, and (ii) all related tax benefits are utilized (a)
with regard to U.S. Federal income taxes, at the highest marginal rates then
applicable to corporations for the relevant period or periods, and (b) with
regard to state and local income taxes, at the highest marginal rate then
applicable to corporations for the relevant period or periods.

"APPLICABLE RATE" shall mean (i) in respect of any amount due under any Lessor
Note or any amount of Basic Rent attributable to the principal and interest on
any Lessor Note (including Make Whole Premium, if any), the per annum fixed
rate of interest (including, without limitation, additional interest resulting
from an Illiquidity Event or a Reporting Cessation (as each such term is
defined in the Lessor Notes), if any) then borne by the relevant Lessor Note
and (ii) in respect of any other amount due under the Operative Documents,
8.45% per annum (in each case, computed on the basis of a 360-day year of
twelve 30-day months).

"APPRAISAL PROCEDURE" shall mean (except with respect to the Closing Date
Appraisal), an appraisal conducted by an appraiser or appraisers in accordance
with the following procedures. The Owner Participant and the Facility Lessee
will consult with the intent of selecting a mutually acceptable Independent
Appraiser. If a mutually acceptable Independent Appraiser is selected, the Fair
Market Sales Value, the Fair Market Rental Value, the remaining useful life or
other determination that is the subject of the appraisal shall be determined by
such Independent Appraiser. If

                                       5
<PAGE>

the Facility Lessee and the Owner Participant are unable to agree upon a single
Independent Appraiser within a 15-day period, one shall be appointed by the
Owner Participant, and one shall be appointed by the Facility Lessee (or its
designee), which Independent Appraisers shall attempt to agree upon the value,
period, amount or other determination that is the subject of the appraisal. If
either the Owner Participant or the Facility Lessee or its designee does not
appoint its Independent Appraiser, the determination of the other Independent
Appraiser shall be conclusive and binding on the Owner Participant and the
Facility Lessee. If the Independent Appraisers appointed by the Owner
Participant and the Facility Lessee are unable to agree upon the value, period,
amount or other determination that is the subject of the appraisal, such
Independent Appraisers shall jointly appoint a third Independent Appraiser or,
if such Independent Appraisers do not appoint a third Independent Appraiser,
the Owner Participant and the Facility Lessee shall jointly appoint the third
Independent Appraiser. In such case, the average of the determinations of the
three Independent Appraisers shall be conclusive and binding on the Owner
Participant and the Facility Lessee, unless the determination of one such
Independent Appraiser is disparate from the middle determination by more than
twice the amount by which the third determination is disparate from the middle
determination, in which case the determination of the most disparate
Independent Appraiser shall be excluded, and the average of the remaining two
determinations shall be conclusive and binding on the Owner Participant and the
Facility Lessee.

"APPRAISER" shall mean Deloitte and Touche LLP Valuation Group.

"ASA" shall mean the Asset Sale Agreement, dated as of March 22, 1999, by and
between ComEd and EME.

"ASSIGNMENT AND ASSUMPTION AGREEMENT" shall mean an assignment and assumption
agreement in form and substance substantially in the form of Exhibit LL to the
Participation Agreement.

"ASSOCIATES" shall mean Associates Capital Investments, L.L.C., a Delaware
limited liability company.

"AUTHORIZED OFFICER" shall mean, with respect to any Person, (i) its Chairman
of the Board, its President, any Senior Vice President, the Chief Financial
Officer, any Vice President, the Treasurer or any other person authorized by or
pursuant to the

                                       6
<PAGE>

Organic Documents or any resolution of the board of directors or managers (or
managing members) of such Person, and (ii) with respect to the Owner Trustee,
an officer in its corporate trust department.

"BANKRUPTCY CODE" shall mean the United States Bankruptcy Code of 1978, as
amended from time to time, 11 U.S.C. Section 101 ET SEQ.

"BASE FREE CASH FLOW" shall have the meaning set forth in the definition of
"Free Cash Flow."

"BASIC LEASE RENT" shall have the meaning specified in SECTION 3.2 of the
Facility Lease.

"BASIC LEASE TERM" shall have the meaning specified in SECTION 3.1 of the
Facility Lease.

"BENEFICIAL INTEREST" shall mean the interest of the Owner Participant in the
Owner Lessor.

"BILL OF SALE" shall mean the Bill of Sale (I), dated as of August 17, 2000,
executed by Midwest in favor of the Owner Lessor, as the same may from time to
time be amended, amended and restated, supplemented or otherwise modified in
accordance with the terms thereof.

"BURDENSOME BUYOUT EVENT" shall mean any event giving rise to the Facility
Lessee's Burdensome Buyout Option under the Facility Lease.

"BURDENSOME BUYOUT OPTION" shall have the meaning specified in SECTION 13.3 of
the Facility Lease.

"BURDENSOME BUYOUT PERIOD" shall have the meaning specified in SECTION 13.3 of
the Facility Lease.

"BUSINESS DAY" shall mean any day other than a Saturday, a Sunday, or a day on
which commercial banking institutions are authorized or required by law,
regulation or executive order to be closed in New York, New York or the city
and the state in

                                       7
<PAGE>

which the Corporate Trust Office of the Lease Indenture Trustee, the Owner
Trustee or either Pass Through Trustee is located.

"CAPEX CREDIT AGREEMENT" shall mean the Credit Agreement, dated as of May 9,
2000, by and among Holdings, Societe Generale and Bayerische Landesbank
Girozentrale.

"CAPITAL LEASE" shall mean, with respect to any Person, a lease of (or other
Indebtedness arrangements conveying the right to use) real or personal property
of such Person which is required to be classified and accounted for as a
capital lease or a liability set forth on the balance sheet of such Person or
such Person's Subsidiaries in accordance with GAAP.

"CAPITALIZED LEASE LIABILITIES" of any Person shall mean all monetary
obligations of such Person under any Capital Lease, and, for purposes of each
Operative Document, the amount of such obligations shall be the capitalized
amount thereof, determined in accordance with GAAP.

"CASH EQUIVALENT INVESTMENTS" shall mean, at any time:

      (i)     any evidence of Indebtedness, maturing not more than one year
after such time, issued or guaranteed by the United States government or an
agency thereof;

      (ii)    other investments in securities or bank instruments rated at
least "A" by S&P and "A2" by Moody's or "A-1" by S&P and "P-1" by Moody's and
with maturities of less than 366 days; or

      (iii)   other securities as to which the Person incurring such
Indebtedness has demonstrated adequate liquidity through secondary markets or
deposit agreements.

"CASHFLOW AVAILABLE FOR FIXED CHARGES" shall mean, in respect of any period,
the excess, if any, of Revenues (excluding, without duplication, (i) proceeds
of any permitted asset sale, (ii) amounts available in the Cashflow Recapture
Fund and (iii) payments made by Edison Mission Energy under or in respect of
the Synthetic Lease

                                       8
<PAGE>

Intercompany Note or the Combined Lease Note) during such period OVER Operating
Expenses during such period.

"CASHFLOW RECAPTURE FUND" shall have the meaning ascribed thereto in the
Holdings Credit Agreement.

"CERCLIS" shall mean the Comprehensive Environmental Response, Compensation and
Liability Information System list.

"CERTIFICATEHOLDERS" shall mean each of the holders of Certificates, and each
of such holder's successors and permitted assigns.

"CERTIFICATE PURCHASE AGREEMENT" shall mean the Purchase Agreement, dated as of
August 17, 2000 between Midwest, EME and Credit Suisse First Boston Corporation
and Lehman Brothers Inc., as representatives of the Initial Purchasers.

"CERTIFICATES" shall mean the pass through certificates issued pursuant to the
Pass Through Trust Agreements.

"CLAIM" shall mean any liability (including, without limitation, in respect of
negligence (whether passive or active or other torts), strict or absolute
liability in tort or otherwise, warranty, latent or other defects (regardless
of whether or not discoverable), statutory liability, property damage, bodily
injury or death), obligation, loss, settlement, damage, penalty, claim,
Environmental Claim, action, suit, proceeding (whether civil or criminal),
judgment, penalty, fine and other legal or administrative sanction, judicial or
administrative proceeding, cost, expense or disbursement, including reasonable
legal, investigation and expert fees, expenses and related charges, of
whatsoever kind and nature.

"CLOSING" shall have the meaning specified in SECTION 2.2(a) of the
Participation Agreement.

"CLOSING DATE" shall mean the Scheduled Closing Date or such later date on
which the Closing shall occur.

                                       9
<PAGE>

"CLOSING DATE APPRAISAL" shall mean the appraisal, dated the Closing Date,
addressed to the Equity Investor prepared by the Appraiser with respect to the
Facility.

"CODE" shall mean the Internal Revenue Code of 1986, as amended.

"COLLINS HOLDINGS" shall mean Collins Holdings EME, LLC, a wholly-owned
Subsidiary of MGE and a special purpose, bankruptcy-remote limited liability
company organized under the laws of the State of Delaware.

"COLLINS LEASE OBLIGATIONS" shall mean the obligations of Midwest to make
payments of basic lease rent, renewal lease rent, supplemental lease rent and
other payments under the Facility Leases (as defined in the Holdings Credit
Agreement).

"COMBINED LEASE NOTE" shall mean the EME Note, the comparable promissory note
issued by EME to Midwest pursuant to the Other Powerton Lease Transaction and
each comparable promissory note issued by EME to Midwest pursuant to the Joliet
Lease Transactions.

"COMBINED LEVERAGE LEASE LIABILITIES" shall mean Leveraged Lease Liabilities,
Other Leveraged Lease Liabilities and Joliet Leveraged Lease Liabilities.

"COMED" shall mean the Commonwealth Edison Company, an Illinois corporation or
its successors or assigns.

"COMED CONSENT" shall mean the Consent to the Sale of Assets, dated as of
August 17, 2000 among ComEd, Midwest and the Owner Lessor.

"COMMISSION" shall mean the Securities and Exchange Commission or any other
federal agency at the time administering the Securities Act.

"COMPETITOR" shall have the meaning specified in SECTION 10.1(b) of the
Participation Agreement.

"COMPONENT" shall mean any appliance, part, instrument, appurtenance,
accessory, furnishing, equipment or other property of whatever nature that may
from time to time be incorporated in the Facility, except to the extent
constituting Improvements.

                                       10
<PAGE>

"CONSOLIDATED SUBSIDIARY" shall mean, at any date, any Subsidiary or other
entity the accounts of which would be consolidated with those of EME in its
consolidated financial statements if its consolidated financial statements were
prepared as of such date.

"CONSOLIDATED TANGIBLE NET ASSETS" shall mean, with respect to any Person, as
of the date of any determination thereof, the total amount of all assets of
such Person and its Subsidiaries (determined on a consolidated basis in
accordance with GAAP), less the sum of (a) the consolidated liabilities of such
Person and its Subsidiaries (determined on a consolidated basis in accordance
with GAAP) and (b) assets properly classified as "intangible assets" in
accordance with GAAP.

"CONTINGENT LIABILITY" shall mean any agreement, undertaking or arrangement by
which any Person guarantees, endorses or otherwise becomes or is contingently
liable upon (by direct or indirect agreement, contingent or otherwise, to
provide funds for payment, to supply funds to, or otherwise to invest in, a
debtor, or otherwise to assure a creditor against loss) the indebtedness,
obligation or any other liability of any other Person (other than by
endorsements of instruments in the course of collection), or guarantees the
payment of dividends or other distributions upon the shares of any other
Person. The amount of any Person's obligation under any Contingent Liability
shall (subject to any limitation set forth therein) be deemed to be the
outstanding principal amount of the debt, obligation or other liability
guaranteed thereby; PROVIDED, HOWEVER, that if the maximum amount of the debt,
obligation or other liability guaranteed thereby has not been established, the
amount of such Contingent Liability shall be the maximum reasonably anticipated
amount of the debt, obligation or other liability; PROVIDED, FURTHER, HOWEVER,
that any agreement to limit the maximum amount of such Person's obligation
under such Contingent Liability shall not, of and by itself, be deemed to
establish the maximum reasonably anticipated amount of such debt, obligation or
other liability.

"CONTRACTUAL OBLIGATION" shall mean, as to any Person, any provision of any
security issued by such Person or of any agreement, instrument or other
undertaking to which such Person is a party or by which it or any of its
property is bound.

"CONTROLLED GROUP" shall mean all corporations which are members of a
controlled group of corporations within the meaning of Section 1563(a) of the
Code determined without regard to Sections 1563(a)(4) and 1563(e)(3)(C) and all
trades or businesses

                                       11

<PAGE>

(whether or not incorporated) under common control which, together with EME
and its Consolidated Subsidiaries, are treated as a single employer under
Section 414(b) or 414(c) of the Code or Section 4001 of ERISA.

"CORPORATE TRUST OFFICE" shall mean with respect to any Pass Through Trustee,
the Owner Trustee and the Lease Indenture Trustee, the office of such trustee
in the city in which at any particular time its corporate trust business
shall be principally administered.

"DEBT RATING" shall mean, as to any Person, a rating by each of Moody's and
S&P of such Person's long-term debt which is not secured or supported by a
guarantee, letter of credit or other form of credit enhancement. If Moody's
or S&P shall have changed its system of classification after the date of the
Participation Agreement, a Person's Debt Rating shall be considered to be at
or above a specified level if it is at or above the new rating which most
closely corresponds to the specified level under the old rating system.

"DEBT SERVICE COVERAGE RATIO" shall mean, for any period, the ratio of (a)
Cashflow Available for Fixed Charges for such period to (b) Fixed Charges for
such period.

"DESIGNATED LEASE LIABILITIES" shall have the meaning ascribed thereto in the
Holdings Credit Agreement.

"DISCOUNT RATE" shall mean 9.0% per annum.

"DOLLARS" and the sign "$" shall mean lawful money of the United States.

"EDISON MISSION ENERGY" or "EME" shall mean Edison Mission Energy, a
California corporation.

"EME GUARANTEE" shall mean the guaranty agreement dated as of August 17, 2000
entered into between EME and the Owner Lessor.

"EME GUARANTEES" shall mean the EME Guarantee, the Reimbursement Agreement
and the EME OP Guarantee.

                                     12

<PAGE>

"EME INDEBTEDNESS" shall mean any indebtedness for borrowed money that is
incurred, issued or guaranteed by EME.

"EME JOLIET (T1) PLEDGE AGREEMENT" shall mean the EME Joliet (T1) Pledge
Agreement, dated as of August 17, 2000, between Midwest and the Holdings
Collateral Agent.

"EME JOLIET (T2) PLEDGE AGREEMENT" shall mean the EME Joliet (T2) Pledge
Agreement, dated as of August 17, 2000, between Midwest and the Holdings
Collateral Agent.

"EME NOTE" shall have the meaning set forth in the recitals to the
Participation Agreement.

"EME POWERTON (T1) PLEDGE AGREEMENT" shall mean the EME Powerton (T1) Pledge
Agreement, dated as of August 17, 2000, between Midwest and the Holdings
Collateral Agent.

"EME POWERTON (T2) PLEDGE AGREEMENT" shall mean the EME Powerton (T2) Pledge
Agreement, dated as of August 17, 2000, between Midwest and the Holdings
Collateral Agent.

"EME OP GUARANTEE" shall mean the guaranty agreement dated as of August 17,
2000 entered into between EME, the Owner Participant and the Equity Investor.

"EMOC" shall mean Edison Mission Overseas Co., a Subsidiary of Holdings and a
limited liability company organized under the laws of Delaware.

"ENGINEERING CONSULTANT" shall mean Stone & Webster Management Consultants,
Inc.

"ENGINEERING REPORT" shall mean the report of the Engineering Consultant,
dated August 17, 2000.

"ENVIRONMENTAL CLAIM" shall mean any administrative, regulatory or judicial
action, fee, cause of action, obligation, suit, liability, loss, damage,
proceeding, decree, judgment, penalty, fine, demand, demand letter, order,
directive, claim

                                     13

<PAGE>

(including any claim involving liability in tort, strict, absolute or
otherwise), lien, sanction, notice of noncompliance or violation, legal or
consultant fee or expense, or cost of investigation or proceeding, relating
in any way to any Environmental Law, or arising from the actual or alleged
presence or Release of any Hazardous Material (hereinafter "LIABILITIES")
including, without limitation, and regardless of the merit of such Liability,
any and all Liabilities for (i) investigation, assessment, abatement,
correction, enforcement, mitigation, cleanup, removal, response, remediation
or other activities related to the actual or alleged presence or Release of
Hazardous Materials, (ii) damages, contribution, indemnification, cost
recovery, compensation or injunctive or declaratory relief related to
violations of Environmental Law or the actual or alleged presence or Release
of Hazardous Materials, or (iii) any alleged or actual injury or threat of
injury to human health, safety, natural resources or the environment in
connection with a violation of Environmental Law or the actual or alleged
presence or Release of Hazardous Materials.

"ENVIRONMENTAL CONDITION" shall mean the presence or Release of any Hazardous
Material at, into, on or under any land, water, air or otherwise into the
environment, which does or reasonably could (i) require assessment,
investigation, abatement, correction, clean-up, mitigation, removal,
remediation or any other response action, (ii) give rise to an Environmental
Claim or any obligation or liability of any nature (whether civil or
criminal, arising under a theory of negligence or strict liability, or
otherwise) under any Environmental Law, (iii) create or constitute a public
or private nuisance or trespass, (iv) constitute a violation of or
non-compliance with any Environmental Law or (v) result in or contribute to
the actual or threatened loss of or damage to any property, natural resource
or environmental media, or the death of or injury to any Person.

"ENVIRONMENTAL LAWS" shall mean all federal, state and local statutes, laws,
ordinances, codes, rules, regulations, consent decrees, administrative
orders, administrative directives, injunctions, deed restrictions, applicable
judgments and any other legally enforceable requirements of any Governmental
Authority relating to, regulating or imposing liability or standards of
conduct concerning Hazardous Materials, public health, safety or the
environment or natural resources, as have been, are now, or may at any time
hereafter be in effect.

"EQUITY COMMITMENT LETTER" shall mean the written commitment by the Equity
Investor to participate in the lease financing.

                                     14

<PAGE>

"EQUITY INVESTMENT" shall mean $88,390,800.00.

"EQUITY INVESTOR" shall mean PSEGR Midwest, LLC, a Delaware limited liability
company.

"EQUITY INVESTOR'S ADVISOR" shall mean Cornerstone Financial Advisors Limited
Partnership.

"EQUITY PORTION OF BASIC LEASE RENT" shall mean the amounts set forth as
Component A of Basic Lease Rent (Column A) as set forth on SCHEDULE 1-1 to
the Facility Lease.

"EQUITY PORTION OF TERMINATION VALUE" shall mean the amounts under the column
titled "Equity Portion of Termination Value" in SCHEDULE 2 to the Facility
Lease.

"ERISA" shall mean the Employee Retirement Income Security Act of 1974, as
amended, and any successor statute of similar import, together with the
regulations thereunder, in each case as in effect from time to time.
References to sections of ERISA also refer to any successor sections.

"EVENT OF LOSS" shall mean any of the following events:

         (i) the loss of the Facility or use thereof, due to destruction or
damage to the Facility or the Facility Site that renders repair uneconomic or
that renders the Facility permanently unfit for normal use; or

         (ii) any damage to the Facility that results in an insurance
settlement with respect thereto on the basis of a total loss or an agreed
constructive or a compromised total loss of the Facility; or

         (iii) seizure, condemnation, confiscation or taking of, or
requisition of title to or use of, the Facility or the Facility Site by any
Governmental Authority (a "REQUISITION") that shall have resulted in loss by
the Owner Lessor of title to or use of the Undivided Interest or the Ground
Interest following exhaustion of all permitted appeals or an election by the
Facility Lessee not to pursue such appeals; PROVIDED, that (i) no such
contest may be conducted if a Material Lease Default or a Lease Event of
Default shall have occurred and be continuing and (ii) no such contest

                                     15

<PAGE>

shall extend beyond the earlier of (x) the date which is one year after the
loss of such title, or (y) the date which is 36 months prior to the end of
the Basic Lease Term or any Renewal Term then in effect or already elected by
the Facility Lessee; PROVIDED, FURTHER, that in any case involving
Requisition of use of the Facility or the Facility Site, but not of the Owner
Lessor's title to the Undivided Interest or interest in the Facility Lease,
such event shall be an Event of Loss only if such Requisition of use
continues beyond the Basic Lease Term or any Renewal Lease Term then in
effect or already elected by the Facility Lessee; or

         (iv) if elected by the Owner Participant, and only in circumstances
where the termination of the Facility Lease and transfer of the Facility to
the Facility Lessee (or its designee) shall remove the basis of the
regulation described below, the Owner Participant's interest in the Facility,
the Facility Lease or the Trust Estate shall become subject to any rate of
return regulation by any Governmental Authority, or the Owner Participant or
the Owner Lessor shall become subject to any public utility regulation of any
Governmental Authority (other than Requirements of Law in effect on the
Closing Date) or law which in the reasonable opinion of the Owner Participant
is burdensome, in either case by reason of the participation of the Owner
Lessor or the Owner Participant in the transactions contemplated by the
Operative Documents but, in any event, not if the Owner Participant or the
Owner Lessor shall have become subject thereto as a result of (a)
investments, loans or other business activities of the Owner Participant or
any of its Affiliates in respect of equipment or facilities similar in nature
to the Facility or any part thereof or in any other electrical, steam,
cogeneration or other energy or utility related equipment or facilities or
the general business or other activities of the Owner Participant or any of
its Affiliates or the nature of any of the properties or assets from time to
time owned, leased, operated, managed or otherwise used or made available for
use by the Owner Participant or any of its Affiliates or (b) a failure of the
Owner Participant, the Owner Lessor or any of their respective Affiliates to
perform routine, administrative or ministerial actions the performance of
which would not subject the Owner Participant, the Owner Lessor or such
Affiliate to any adverse consequence (in the reasonable opinion of the Owner
Participant or the Owner Lessor, as the case may be, acting in good faith),
PROVIDED THAT the Facility Lessee, the Owner Lessor and the Owner Participant
agree to cooperate and to take reasonable measures to alleviate the source or
consequence of any regulation constituting an Event of Loss under this
paragraph (iv), at the cost and expense of the party requesting such
cooperation and

                                     16

<PAGE>

so long as there shall be no adverse consequences to the Owner Lessor or
Owner Participant as a result of such cooperation or the taking of such
reasonable measures.

"EVENT OF LOSS PAYMENT" shall have the meaning specified in SECTION 10.2(a)
of the Facility Lease.

"EXCEPTED PAYMENTS" shall mean and include (i)(A) any indemnity (whether or
not constituting Supplemental Lease Rent and whether or not a Lease Event of
Default exists) payable to either the Trust Company, the Owner Trustee or the
Owner Participant or to their respective Indemnitees and successors and
permitted assigns (other than the Lease Indenture Trustee) pursuant to
SECTION 2.3, 12.1, 12.2, 14.1 OR 14.2 of the Participation Agreement or
SECTION 5.03, 7.01 OR 7.05 of the Trust Agreement and any payments under the
Tax Indemnity Agreement or (B) any amount payable to the Owner Lessor or the
Owner Participant to reimburse any such Person for its costs and expenses in
exercising its rights or complying with its obligations under the Operative
Documents, (ii)(A) insurance proceeds, if any, payable to the Owner Lessor or
the Owner Participant under insurance separately maintained by the Owner
Lessor, the Equity Investor or the Owner Participant with respect to the
Facility as permitted by SECTION 11.5 of the Facility Lease or (B) proceeds
of personal injury, property damage liability or other liability insurance
maintained under any Operative Document for the benefit of the Owner Lessor,
the Equity Investor or the Owner Participant, (iii) any amount payable to the
Owner Participant as the purchase price for the Beneficial Interest or to any
OP Member as the purchase price for such OP Member's membership interest in
the Owner Participant, (iv) any amounts payable to the Owner Participant upon
exercise by the Facility Lessee (or its designee) of the rights pursuant to
SECTION 16 OR 17 of the Participation Agreement, (v) all other fees expressly
payable to the Owner Participant, the Owner Trustee or the Trust Company
under the Operative Documents, (vi) any payments in respect of interest, or
any payments made on an After-Tax Basis, to the extent attributable to
payments referred to in clause (i) through (vi) above that constitute
Excepted Payments, and (vii) any amount payable in respect of the foregoing
by any Person on behalf of the Facility Lessee.

"EXCESS AMOUNT" shall have the meaning specified in SECTION 18.3 of the
Participation Agreement.

                                     17

<PAGE>

"FACILITY" shall mean the Powerton Station, a 1,538 megawatt coal fired
electric generating plant located in Tazewell County, Illinois and more fully
described in Exhibit B to the Facility Lease.

"FACILITY DEED" shall mean the Facility Deed, dated as of August 17, 2000,
between Midwest and the Owner Lessor pursuant to which Midwest transferred
the Undivided Interest to the Owner Lessor.

"FACILITY LAND" shall have the meaning set forth in the recitals to the
Facility Site Lease.

"FACILITY LEASE" shall mean the Facility Lease Agreement (T1), dated as of
August 17, 2000, between the Owner Lessor and the Facility Lessee.

"FACILITY LEASE TERM" shall mean the term of the Facility Lease, including
the Basic Lease Term and all Renewal Lease Terms.

"FACILITY LESSEE" shall mean Midwest, as lessee of the Undivided Interest
under the Facility Lease.

"FACILITY LESSEE'S INTEREST" shall mean the Facility Lessee's right, title
and interest in and to the Undivided Interest under the Facility Lease and
the Ground Interest under the Facility Site Sublease.

"FACILITY LESSOR" shall mean the Owner Lessor, as lessor of the Undivided
Interest under the Facility Lease.

"FACILITY SITE" shall have the meaning specified in the recitals to the
Facility Site Lease.

"FACILITY SITE LEASE" shall mean the Facility Site Lease Agreement (T1),
dated as of August 17, 2000, between Midwest as Ground Lessor and the Owner
Lessor as Ground Lessee.

"FACILITY SITE SUBLEASE" shall mean the Facility Site Sublease Agreement
(T1), dated as of August 17, 2000, between the Owner Lessor as Ground
Sublessor and Midwest as Ground Sublessee.

                                     18

<PAGE>

"FACILITY SUBLESSEE" shall mean any Person which shall have become a
sublessee of the Facility from the Facility Lessee in accordance with the
Facility Lease.

"FAIR MARKET RENTAL VALUE" or "FAIR MARKET SALES VALUE" shall mean with respect
to any property or service as of any date, the cash rent or cash price
obtainable in an arm's length lease, sale or supply, respectively, between an
informed and willing lessee or purchaser under no compulsion to lease or
purchase and an informed and willing lessor or seller or supplier under no
compulsion to lease or sell or supply the property or service in question, and
shall, in the case of the Undivided Interest or the Owner Lessor's Interest, be
determined (except pursuant to SECTION 17 of the Facility Lease or as otherwise
provided below or in the Operative Documents) on the basis that (i) the
conditions contained in SECTIONS 7 and 8 of the Facility Lease shall have been
complied with in all respects, (ii) the lessee or buyer shall have rights in, or
an assignment of, the Operative Documents to which the Owner Lessor is a party
and the obligations relating thereto, (iii) the Undivided Interest or the Owner
Lessor's Interest, as the case may be, is free and clear of all Liens (other
than Owner Lessor's Liens, Owner Participant's Liens and Indenture Trustee
Liens), (iv) taking into account the remaining term of the Facility Site Lease,
and (v) in the case the Fair Market Rental Value, taking into account the terms
of the Facility Lease and the other Operative Documents. If the Fair Market
Sales Value of the Owner Lessor's Interest is to be determined during the
continuance of a Lease Event of Default or in connection with the exercise of
remedies by the Owner Lessor pursuant to SECTION 17 of the Facility Lease, such
value shall be determined by an appraiser appointed solely by the Owner Lessor
on an "as-is," "where-is" and "with all faults" basis and shall take into
account all Liens (other than Owner Lessor's Liens, Owner Participant's Liens
and Indenture Trustee Liens); PROVIDED, HOWEVER, in any such case where the
Owner Lessor shall be unable to obtain constructive possession sufficient to
realize the economic benefit of the Owner Lessor's Interest, Fair Market Sales
Value of the Owner Lessor's Interest shall be deemed equal to $0. If in any case
other than in the preceding sentence the parties are unable to agree upon a Fair
Market Sales Value of the Owner Lessor's Interest within 30 days after a request
therefor has been made, the Fair Market Sales Value of the Owner Lessor's
Interest shall be determined by appraisal pursuant to the Appraisal Procedure.
Any fair market value determination of a Severable Improvement shall take into
consideration any liens or encumbrances to which the Severable Improvement being
appraised is subject and which are being assumed by the transferee.

                                     19

<PAGE>

"FAS 13" shall mean Statement of Financial Accounting Standards (SFAS) No.
13, as amended and interpreted from time to time.

"FEDERAL POWER ACT" shall mean the Federal Power Act, 16 U.S.C. Sections
791a-825r (1994), as amended.

"FERC" shall mean the Federal Energy Regulatory Commission of the United
States or any successor or predecessor agency thereto.

"FERC EWG ORDERS" shall mean (i) the order issued by the FERC on November 9,
1999, in Docket No. EG99-224-000 granting to Midwest "exempt wholesale
generator" status under the Holding Company Act, and (ii) each of the orders
issued by the FERC on July 24, 2000, in Docket Nos. EG00-164-000 and
EG00-165-000 granting to the Owner Lessor and the Other Owner Lessor "exempt
wholesale generator" status under the Holding Company Act.

"FERC ORDERS" shall mean, collectively, the FERC EWG Orders, the FERC Section
203 Order and the FERC Section 205 Orders.

"FERC SECTION 203 ORDER" shall mean the order issued by the FERC on June 26,
2000, in Docket No. EC00-94-000, granting approval under Section 203 of the
Federal Power Act for the transfer of the facilities for financing purposes
to the Owner Lessor and the Other Owner Lessor and lease of the facilities by
the Owner Lessor and the Other Owner Lessor to Midwest.

"FERC SECTION 205 ORDERS" shall mean (i) the order issued by the FERC on
September 15, 1999, in Docket No. ER99-3693-000, granting approval under
Section 205 of the Federal Power Act for Midwest to sell power at market
based rates and granting blanket preapproval under Section 204 of the Federal
Power Act for all future issuances of securities and assumptions of
liabilities by Midwest, and (ii) the order issued by the FERC on September 3,
1999, in Docket No. ER99-3691-000, accepting for filing three Facilities and
Interconnection Agreements.

"FINAL DETERMINATION" shall have the meaning specified in SECTION 1 of the
Tax Indemnity Agreement.

                                     20

<PAGE>

"FIRST WINTERGREEN RENEWAL LEASE TERM" shall have the meaning specified in
SECTION 15.1(a) of the Facility Lease.

"FISCAL QUARTER" shall mean any quarter of a Fiscal Year.

"FISCAL YEAR" shall mean any period of twelve consecutive calendar months
ending on December 31; references to a Fiscal Year with a number
corresponding to any calendar year (E.G. the "1999 Fiscal Year") shall refer
to the Fiscal Year ending on December 31 occurring during such calendar year.

"FIXED CHARGES" shall mean, in respect of any period, an amount equal to the
aggregate of, without duplication, (i) all interest due and payable on any
Indebtedness of Holdings PLUS or MINUS any net amount due and payable in
respect of Interest Rate Hedging Transactions during such period, including
(A) all capitalized interest and (B) the interest portion of any deferred
payment obligation, (ii) amounts due and payable in respect of fees on
Indebtedness permitted to be incurred by Holdings during such period, (iii)
amounts due and payable to any lenders of Holdings with respect to the
deduction of withholding tax on such payments during such period, (iv) the
interest portion of any deferred payment obligation due and payable during
such period, (v) the aggregate amount of the Collins Lease Obligations due
and payable during such period, (vi) all other amounts due and payable by the
Holdings Loan Parties with respect to Indebtedness other than Designated
Lease Liabilities, Synthetic Lease Liabilities and Combined Leveraged Lease
Liabilities permitted to be incurred by the Holdings Loan Parties under the
Lessee Financing Documents during such period, and (vii) all amounts due and
payable by Holdings Loan Parties to unaffiliated third parties during such
period in respect of any preferred stock or other similar obligations.

"FMV RENEWAL LEASE TERM" shall have the meaning specified in SECTION 15.2 of the
Facility Lease.

"FREE CASHFLOW" shall mean, for any period, the sum of (a) payments made by EME
under or in respect of the Synthetic Lease Intercompany Note and (to the extent
permitted to be retained by Midwest under the Pledge Agreements) the Combined
Lease Note during such period to the extent not distributed by Midwest directly
or indirectly to EME during such period plus (b) the excess if any, of (i)
Cashflow Available for Fixed Charges for such period OVER (ii) the sum of (x)
Fixed Charges

                                     21

<PAGE>

for such period and (y) amounts required to be deposited into the Cashflow
Recapture Fund (such excess "BASE FREE CASH FLOW") MINUS (c) Designated Lease
Liabilities, Synthetic Lease Liabilities and Combined Leveraged Lease
Liabilities paid by Midwest during such period; PROVIDED that Base Free
Cashflow shall be zero in the event that any of the following conditions has
not been satisfied: (i) Holdings has paid all amounts then due and payable in
respect of (x) all monetary obligations of the Holdings Loan Parties arising
under or in connection with the Holdings Credit Agreement and any agreements
or instruments related thereto and (y) any Indebtedness of Holdings that is a
Secured Obligation; (ii) no Default, Event of Default or Maturity Event (each
as defined in the Holdings Credit Agreement) shall have occurred and be
continuing or will occur after giving effect to the making of the payments
referred to in clauses (i)(x) and (y); and (iii) (A) the Debt Service
Coverage Ratio for the 12-month period ended on the last day of the
immediately preceding Fiscal Quarter (or, in respect of any Quarterly Payment
Date prior to January 1, 2001, the Debt Service Coverage Ratio for the period
commencing on January 1, 2000 and ending on the last day of the immediately
preceding Fiscal Quarter), (B) the projected Debt Service Coverage Ratio for
the 12-month period commencing on the first day of the then current Fiscal
Quarter and (C) the projected Debt Service Coverage Ratio for the 12-month
period commencing on the first anniversary of the first day of the then
current Fiscal Quarter, in each case shall be no less than 1.75 to 1.00.

"GAAP" shall mean generally accepted accounting principles in the United
States of America as in effect from time to time, consistently applied.

"GOOD FAITH CONTEST" shall mean the contest of an item if (i) the item is
diligently being contested in good faith by appropriate proceedings timely
instituted, (ii) adequate reserves are established in accordance with GAAP
with respect to the contested item, if the contested item individually or
when taken together with all other contested items for which reserves are not
at the time being held could reasonably be expected to result in liability of
EME in excess of $1,000,000, (iii) during the period of such contest, the
enforcement of any contested item is effectively stayed, unless such
enforcement would not reasonably be expected to result in a Material Adverse
Effect with respect to EME, (iv) any lien filed in connection therewith shall
have been removed from the record by bonding arrangements by a reputable
surety company, or title insurance or cash deposits or otherwise provided to
assure the discharge of EME'S obligation in connection

                                     22

<PAGE>

therewith, provided that such cash deposits, in the aggregate, shall not
exceed $2,000,000, (v) such payment shall have been made as is necessary to
prevent the recordation of a tax deed or other similar instrument conveying
the property of EME or any portion thereof, (vi) the failure to pay or comply
with the contested item during the period of such Good Faith Contest would
not reasonably be expected to result in a Material Adverse Effect with
respect to EME and (vii) EME has no knowledge of any actual or proposed
deficiency or additional assessment in connection therewith not otherwise
satisfying the requirements of clauses (i) through (vi).

"GOVERNMENTAL APPROVAL" shall mean any authorization, consent, approval,
license, permit, order, certificate, waiver, variance, filing or registration
with or issued by any Governmental Authority.

"GOVERNMENTAL AUTHORITY" shall mean any nation or government, any state,
provincial or other political subdivision thereof and any entity exercising
executive, legislative, judicial, regulatory or administrative functions of
or pertaining to government.

"GROUND INTEREST" shall have the meaning specified in the recitals to the
Facility Site Lease.

"GROUND LESSEE" shall mean the Owner Lessor as lessee of the Ground Interest
under the Facility Site Lease.

"GROUND LESSOR" shall mean Midwest as lessor of the Ground Interest under the
Facility Site Lease.

"GROUND SUBLESSEE" shall mean Midwest as sublessee of the Ground Interest
under the Facility Site Sublease.

"GROUND SUBLESSOR" shall mean the Owner Lessor as sublessor of the Ground
Interest under the Facility Site Sublease.

                                     23

<PAGE>

"GUARANTEED TV AMOUNT" shall mean for any Termination Date the Guaranteed TV
Amount set forth on Schedule 1 to the EME Guarantee for such Termination Date.

"GUARANTOR" shall mean Edison Mission Energy, as issuer of the EME Guarantees.

"HAZARDOUS MATERIAL" shall mean:

         (i)      any "hazardous substance," as defined by any Environmental
                  Law;

         (ii)     any "hazardous waste," as defined by any Environmental Law;

         (iii)    any petroleum product (including crude oil or any fraction
                  thereof); or

         (iv)     any pollutant or contaminant or hazardous, dangerous or toxic
chemical, material, force or substance (including polychlorinated biphenyls,
urea formaldehyde insulation, asbestos or radioactivity) that is regulated,
prohibited or restricted pursuant to any Environmental Laws or that could
give rise to an Environmental Claim.

"HOLDING COMPANY ACT" or "PUHCA" shall mean the Public Utility Holding
Company Act of 1935, as amended.

"HOLDINGS LOAN PARTIES" shall mean Holdings and each of Holdings' direct and
indirect Subsidiaries.

"HOLDINGS" shall mean Edison Mission Midwest Holdings Co., a Delaware
corporation.

"HOLDINGS COLLATERAL AGENT" shall mean Citibank, N.A. as the collateral agent
under the Intercreditor Agreement.

"HOLDINGS CREDIT AGREEMENT" shall mean the Credit Agreement, dated as of
December 15, 1999, by and among Holdings, the Holdings Lenders and The Chase
Manhattan Bank, as the administrative agent.

                                     24

<PAGE>

"HOLDINGS LENDERS" shall mean The Chase Manhattan Bank, Citicorp USA, Inc.,
Societe Generale and Westdeutsche Landesbank Girozentrale, New York Branch
and such other institutions that become lenders in accordance with the
Holdings Credit Agreement.

"HOLDINGS SECURED PARTIES" shall mean the Secured Parties as such term is
defined in the Intercreditor Agreement.

"IMPROVEMENT" shall mean a modification, alteration, addition or improvement
to the Facility.

"INDEBTEDNESS" of any Person shall mean, without duplication:

         (i)  all indebtedness for borrowed money;

         (ii) all obligations issued, undertaken or assumed as the deferred
         purchase price of property or services which purchase price is due more
         than six months from the date of incurrence of the obligation in
         respect thereof or is evidenced by a note or other instrument, except
         trade accounts arising in the ordinary course of business;

         (iii) all reimbursement obligations with respect to surety bonds,
         letters of credit (to the extent not collateralized with cash or Cash
         Equivalent Investments), bankers= acceptances and similar instruments
         (in each case, whether or not matured);

         (iv) all obligations evidenced by notes, bonds, debentures or similar
         instruments including obligations so evidenced incurred in connection
         with the acquisition of property, assets or businesses;

         (v) all indebtedness created or arising under any conditional sale or
         other title retention agreement, or incurred as financing, in either
         case with respect to property acquired by the Person (even though the
         rights and remedies of the seller or bank under such agreement in the
         event of default are limited to repossession or sale of such property);

         (vi) all Capitalized Lease Liabilities and Operating Lease Liabilities;

                                     25

<PAGE>

         (vii) all net obligations with respect to interest rate cap agreements,
         interest rate swap agreements, sales of foreign exchange options and
         other hedging agreements or arrangements;

         (viii) all indebtedness referred to in clauses (i) through (vii) above
         secured by (or for which the holder of such Indebtedness has an
         existing right, contingent or otherwise, to be secured by) any Lien
         upon or in property (including accounts and contracts rights) owned by
         such Person, even though such Person has not assumed or become liable
         for the payment of such Indebtedness; and

         (ix) all Contingent Liabilities.

The Indebtedness of any Person shall include the Indebtedness of any
partnership or joint venture in which such Person is a general partner or a
joint venturer.

"INDEMNITEE" shall have the meaning specified in SECTION 12.1(a) of the
Participation Agreement.

"INDENTURE ESTATE" shall have the meaning specified in the Granting Clause of
the Lease Indenture.

"INDENTURE TRUSTEE LIENS" shall mean any Lien on the Trust Estate or any part
thereof arising as a result of (i) Taxes against or affecting the Lease
Indenture Company or the Lease Indenture Trustee, or any Affiliate thereof
that is not related to, or that is in violation of, any Operative Document or
the transactions contemplated thereby, (ii) Claims against or any act or
omission of the Lease Indenture Company or the Lease Indenture Trustee, or
Affiliate thereof that is not related to, or that is in violation of, any
Operative Document or the transactions contemplated thereby or that is in
breach of any covenant or agreement of the Lease Indenture Company or the
Lease Indenture Trustee specified therein, (iii) Taxes imposed upon the Lease
Indenture Company or the Lease Indenture Trustee, or any Affiliate thereof
that are not indemnified against by EME pursuant to any Operative Document or
(iv) Claims against or affecting the Lease Indenture Company or the Lease
Indenture Trustee, or any Affiliate thereof arising out of the voluntary or
involuntary transfer by the Lease Indenture Company or the Lease Indenture
Trustee

                                     26

<PAGE>

of any portion of the interest of the Lease Indenture Company or the Lease
Indenture Trustee in the Trust Estate, other than pursuant to the Operative
Documents.

"INDEPENDENT APPRAISER" shall mean a disinterested, licensed professional
appraiser of industrial property who (a) meets the personal property
qualifications criteria established by the Appraisal Foundation; (b) is a
member of the Appraisal Institute or holds the senior accreditation of the
American Society of Appraisers; (c) is in the regular employ, or is a
principal of, a nationally recognized appraisal firm; and (d) has substantial
experience in the business of appraising facilities similar to the Facility.

"INITIAL LESSOR NOTES" shall have the meaning specified in SECTION 2.2 of the
Lease Indenture.

"INITIAL PURCHASERS" shall mean Credit Suisse First Boston Corporation,
Lehman Brothers Inc., Chase Securities Inc., Salomon Smith Barney Inc. and SG
Cowen Securities Corp.

"INSOLVENCY" shall mean, with respect to any Multiemployer Plan, the
condition that such plan is insolvent within the meaning of Section 4245 of
ERISA.

"INSURANCE CONSULTANT" shall mean Marsh USA Risk & Insurance Services.

"INTERCONNECTION AGREEMENT" shall mean the Facilities, Interconnection and
Easement Agreement (Powerton Generating Station) dated as of December 15,
1999 between Midwest and ComEd, as the same may from time to time be amended,
amended and restated, supplemented or otherwise modified in accordance with
the terms thereof.

"INTERCREDITOR AGREEMENT" shall mean the Collateral Agency and Intercreditor
Agreement dated as of December 15, 1999, among MGE, Holdings, EMOC, Midwest,
Collins Holdings, Collins Trust I, Collins Trust II, Collins Trust III,
Collins Trust IV, Midwest Funding LLC, the Administrative Agent (as defined
therein), each Holder Representative (as defined therein), each Other
Representative (as defined therein), the Depositary Bank (as defined
therein), the Depositary Agent (as defined therein), the Midwest LC Issuer
(as defined therein) and the Holdings Collateral Agent.

                                     27

<PAGE>

"INTEREST ON 467 FIXED RENT" shall mean the amount set forth on Schedule 1-3
to the Facility Lease.

"INTEREST RATE HEDGING TRANSACTIONS" shall mean, as to any Loan Party, all
interest rate swaps, caps or collar agreements or similar arrangements
entered into by such Person in order to protect against fluctuations in
interest rates or the exchange of nominal interest obligations, either
generally or under specific contingencies, and, in any event, not for
speculative purposes.

"INVESTMENT" shall mean, relative to any person: (i) any loan or advance made
by such Person to any other Person (excluding commission, travel and similar
advances to officers and employees made in the ordinary course of business);
(ii) any Contingent Liability of such Person; and (iii) any ownership or
similar interest held by such person in any other Person.

"JOLIET FACILITY LEASES" shall mean the Facility Lease Agreement (T1), dated
as of August 17, 2000, between Midwest and Joliet Trust I and the Facility
Lease Agreement (T2), dated as of August 17, 2000, between Midwest and Joliet
Trust II.

"JOLIET LEASE OPERATIVE DOCUMENTS (T1)" shall mean, collectively, the
Operative Documents as defined in the Joliet Lease Participation Agreement
(T1).

"JOLIET LEASE OPERATIVE DOCUMENTS (T2)" shall mean, collectively, the
Operative Documents as defined in the Joliet Lease Participation Agreement
(T2).

"JOLIET LEASE PARTICIPATION AGREEMENT (T1)" shall mean the Participation
Agreement (T1), dated as of August 17, 2000 by and among Midwest, EME, Joliet
Trust I, Wilmington Trust Company, Joliet Generation I, LLC, the Lease
Indenture Trustee named therein and the Pass Through Trustees named therein.

"JOLIET LEASE PARTICIPATION AGREEMENT (T2)" shall mean the Participation
Agreement (T2), dated as of August 17, 2000 by and among Midwest, EME, Joliet
Trust II, Wilmington Trust Company, Joliet Generation II, LLC, the Lease
Indenture Trustee named therein and the Pass Through Trustees named therein.

                                     28

<PAGE>

"JOLIET LEASE TRANSACTION (T1)" shall mean the transactions consummated
pursuant to the Joliet Lease Participation Agreement (T1) and the Joliet
Lease Operative Documents (T1).

"JOLIET LEASE TRANSACTION (T2)" shall mean the transactions consummated
pursuant to the Joliet Lease Participation Agreement (T2) and the Joliet
Lease Operative Documents (T2).

"JOLIET LEASE TRANSACTIONS" shall mean, collectively, the Joliet Lease
Transaction (T1) and the Joliet Lease Transaction (T2).

"JOLIET LEVERAGED LEASE LIABILITIES" shall mean the basic rent, supplemental
rent, termination value or any other amount, liability or obligation that
Midwest is obligated to pay under the Joliet Facility Leases or the operative
documents for the Joliet Lease Transactions.

"LEASE DEBT" shall mean the debt evidenced by the Lessor Notes and (without
duplication) the Certificates.

"LEASE EVENT OF DEFAULT" shall have the meaning set forth in the Facility
Lease.

"LEASE FINANCING DOCUMENTS" shall mean the Lease Indenture, the Lessor Notes,
the EME Guarantees, the Pass Through Trust Agreements, the Certificates and
the other agreements, documents and instruments delivered in connection with
the Lease Indenture and the Lessor Notes.

"LEASE FINANCING PARTY" shall mean, individually or collectively, as the
context shall require, all or any of the parties to the Operative Documents,
including the Trust Company and excluding ComEd and the Holdings Collateral
Agent.

"LEASE INDENTURE" shall mean the Indenture of Trust, Mortgage and Security
Agreement (T1) dated as of August 17, 2000, between the Owner Lessor and the
Lease Indenture Trustee.

"LEASE INDENTURE COMPANY" shall mean United States Trust Company of New York,
in its individual capacity under the Operative Documents.

                                     29

<PAGE>

"LEASE INDENTURE DEFAULT" shall mean any event or occurrence which, with the
passage of time or the giving of notice or both, would become a Lease
Indenture Event of Default.

"LEASE INDENTURE EVENT OF DEFAULT" shall have the meaning specified in
SECTION 4.2 of the Lease Indenture.

"LEASE INDENTURE TRUSTEE" shall mean United States Trust Company of New York,
not in its individual capacity, but solely as Lease Indenture Trustee under
the Lease Indenture, and each other Person which may from time to time be
acting as Lease Indenture Trustee in accordance with the provisions of the
Lease Indenture.

"LEASE INDENTURE TRUSTEE'S ACCOUNT" shall mean the account No. 049 65900 at
the United States Trust Company of New York, for the account of Powerton
Trust I, Attention: Christopher J. Grell, or such other account of the Lease
Indenture Trustee, as the Lease Indenture Trustee may from time to time
specify in a notice to the other parties to the Participation Agreement.

"LEASE PERMITTED LIENS" shall mean (i) any Lien created by any Operative
Document; (ii) the Owner Lessor's Liens and the Owner Participant's Liens;
(iii) Liens for Taxes, water, sewage, license, permit or inspection fees
either not yet due and payable or being contested in good faith by
appropriate proceedings so long as such proceedings do not involve a material
danger of the sale, forfeiture or loss of the Facility; (iv) construction
materialmen's, mechanics', workers', repairmen's, employees' or other like
Liens arising in the ordinary course of business for amounts either not
overdue for a period of not more than 45 days or being contested in good
faith by appropriate proceedings so long as such proceedings do not involve a
material danger of the sale, forfeiture or loss of the Facility or are bonded
for the amount required under Requirements of Law to release any such Lien;
(v) Liens arising out of judgments or awards against the Facility Lessee
which at the time are being contested in good faith by appropriate
proceedings so long as such proceedings do not involve a material danger of
the sale, forfeiture or loss of the Facility but in any event not to exceed
$1,000,000 in the aggregate at any one time unless the full amount in dispute
is bonded in a manner reasonably acceptable to the Owner Lessor; (vi)
applicable zoning and building regulations and ordinances from time to time
in effect which do not affect the use or operation of the Facility (or the
Undivided Interest therein) except to an insignificant extent; (vii) the
interest of a sublessee in

                                     30

<PAGE>

the Undivided Interest in the Facility under a permitted sublease; and (viii)
Liens, easements, encumbrances, restrictions, defects or irregularity of
title which in the aggregate are not substantial in amount, do not materially
detract from the value of the Facility or the Facility Site (or the Undivided
Interest therein) and do not materially impair the use of the Facility or the
Facility Site (or the Undivided Interest therein) in the ordinary course of
business.

"LEASES" shall mean, collectively, the Facility Lease and the Other Facility
Lease.

"LESSEE FINANCING DOCUMENTS" shall mean the Holdings Credit Agreement, the
CAPEX Credit Agreement and all other agreements and instruments evidencing
Indebtedness of Holdings and Midwest.

"LESSOR NOTES" shall mean any Initial Lessor Notes, Additional Lessor Notes
or New Lessor Notes issued pursuant to the Lease Indenture.

"LEVERAGED LEASE LIABILITIES" means the basic rent, the supplemental rent,
termination value or any other amount, liability or obligation that the
Midwest is obligated to pay under the Facility Lease or the other Operative
Documents.

"LIEN" shall mean any security interest, mortgage, pledge, hypothecation,
assignment, deposit arrangement, encumbrance, lien (statutory or otherwise),
charge against or interest in property, in each case of any kind, to secure
payment of a debt or performance of an obligation.

"LIST OF COMPETITORS" shall mean the initial list attached to the
Participation Agreement as EXHIBIT MM, as amended from time to time pursuant
to SECTION 10.1(b) of the Participation Agreement, which list shall not
exceed six unaffiliated entities at any one time.

"MAKE-WHOLE PREMIUM" shall have the meaning set forth in Annex A to the Lease
Indenture.

"MATERIAL ADVERSE EFFECT" shall mean, with respect to any Person, any event,
development or circumstance that has had or could reasonably be expected to
have a material adverse effect on (i) the business, assets, property,
financial condition or operations of such Person and its Subsidiaries since
the Closing Date, (ii) the ability

                                     31

<PAGE>

of such Person to perform or comply with its obligations under any of the
Operative Documents or (iii) the validity and enforceability of the Operative
Documents, the liens granted thereunder or the rights and remedies thereto.

"MATERIAL LEASE DEFAULT" shall mean any event which, with notice, lapse of
time or both notice and lapse of time, would become a Lease Event of Default
described in clause (a), (b), (f) or (g) of the definition thereof set forth
in SECTION 16 of the Facility Lease.

"MAXIMUM TRANSACTION COST" shall mean 1.3% of the Purchase Price.

"MEMBERSHIP INTEREST" shall mean the membership interest in the Owner
Participant.

"MEMBER TRANSFEREE" shall have the meaning specified in SECTION 18.18(a) of
the Participation Agreement.

"MEMORANDUM OF THE FACILITY LEASE" shall mean the Memorandum of the Facility
Lease (T1), dated as of August 17, 2000, between the Owner Lessor and the
Facility Lessee and filed with the Registries of Deeds, Tazewell County,
Illinois.

"MEMORANDUM OF THE FACILITY SITE LEASE" shall mean the Memorandum of the
Facility Site Lease (T1), dated as of August 17, 2000, between the Ground
Lessor and the Ground Lessee and filed with the Registries of Deeds, Tazewell
County, Illinois.

"MEMORANDUM OF THE FACILITY SITE SUBLEASE" shall mean the Memorandum of the
Facility Site Sublease (T1), dated as of August 17, 2000, between the Ground
Sublessor and the Ground Sublessee and filed with the Registries of Deeds,
Tazewell County, Illinois.

"MGE" shall mean Midwest Generation EME LLC, a Subsidiary of Edison Mission
Energy and a limited liability company organized under the laws of the State
of Delaware.

"MIDWEST" shall mean Midwest Generation LLC, a limited liability company
organized under the laws of the State of Delaware.

                                     32

<PAGE>

"MIDWEST ADVISOR" shall mean Babcock & Brown Inc.

"MOODY'S" shall mean Moody's Investors Service, Inc., a division of Dun &
Bradstreet Corporation, and its successors and assigns.

"MULTIEMPLOYER PLAN" shall mean a "multiemployer plan" as such term is
defined in Section 4001(a)(3) of ERISA.

"NATIONAL PRIORITIES LIST" shall have the meaning set forth in 40 C.F.R.
Section 300.5.

"NET TANGIBLE ASSETS" shall mean, as of the date of any determination
thereof, the total amount of all assets of EME and its Subsidiaries
(determined on a consolidated basis in accordance with GAAP), less the sum of
(i) the consolidated current liabilities of EME and its Subsidiaries
(determined on a consolidated basis in accordance with GAAP) and (ii) assets
properly classified as "intangible assets" in accordance with GAAP.

"NEW LESSOR NOTES" shall have the meaning specified in SECTION 2.13 of the
Lease Indenture.

"NON-RECOURSE DEBT" shall mean, with respect to any Person, Indebtedness
which such Person is not directly or indirectly obligated to repay.

"NON-SEVERABLE IMPROVEMENTS" shall mean any Improvement to the Facility that
is not a Severable Improvement.

"NOTEHOLDERS" shall mean each of the holders of the Lessor Notes, and each of
such holder's successors and permitted assigns.

"OBSOLESCENCE TERMINATION DATE" shall have the meaning specified in SECTION
14.1 of the Facility Lease.

"OFFERING CIRCULAR" shall mean the Offering Circular, dated August 17, 2000,
with respect to the Certificates.

                                     33

<PAGE>

"OFFICER'S CERTIFICATE" shall mean with respect to any Person, a certificate
signed by any Authorized Officer of such Person.

"OPERATING EXPENSES" shall mean, in respect of any period, all cash amounts
paid by the Holdings Loan Parties in the conduct of their business during
such period, including premiums for insurance policies, fuel supply and
transportation costs, utilities, costs of maintaining, renewing and amending
Governmental Approvals, franchise, licensing, property, real estate and
income taxes, sales and excise taxes, general and administrative expenses,
employee salaries, wages and other employment-related costs, business
management and administrative services fees, fees for letters of credit,
surety bonds and performance bonds, necessary capital expenditures and all
other fees and expenses necessary for the continued operation and maintenance
of the Generating Assets (as defined in the Holdings Credit Agreement) and
the conduct of the business of the Holdings Loan Parties. Operating Expenses
shall exclude (to the extent included) Collins Lease Obligations, Synthetic
Lease Liabilities (other than payments of Synthetic Lease Environmental
Indemnity Obligations) and Combined Leveraged Lease Liabilities and shall
include (to the extent excluded) Designated Lease Liabilities (other than
Collins Lease Obligations).

"OPERATING LEASE" shall mean any lease other than a Capital Lease (and,
solely by virtue of the intended classification under GAAP, shall include the
Leases).

"OPERATING LEASE LIABILITIES" of any Person shall mean all monetary
obligations of such Person under any Operating Lease.

"OPERATION AGREEMENT" shall mean the Operation Agreement, dated as of August
17, 2000, among Midwest, the Owner Lessor and the Other Owner Lessor.

"OPERATIVE DOCUMENTS" shall mean the Participation Agreement, the Facility
Deed, the Facility Lease, the Memorandum of the Facility Lease, the Facility
Site Lease, the Memorandum of the Facility Site Lease, the Facility Site
Sublease, the Memorandum of the Facility Site Sublease, the Lease Indenture,
the Lessor Notes, the Trust Agreement, the Pass Through Trust Agreements, the
Certificates, the Certificate Purchase Agreement, EME Guarantee, the OP LLC
Agreement, the Tax Indemnity Agreement, the Purchase Agreement, the
Assignment and Assumption Agreement, the Owner Participant Guaranty, the
ComEd Consent, the EME OP Guarantee, the Bill of Sale, the Registration
Rights Agreement, the Operation

                                     34

<PAGE>

Agreement, the Reimbursement Agreement, the Subordination Agreement and, when
executed and delivered, any agreement with respect to Support Arrangements
contemplated by, and defined in, SECTION 5.2(e) of the Facility Lease.

"OP GUARANTOR" shall mean PSEG Resources Inc. or any other Person that shall
guarantee the obligations of the Owner Participant or a Member Transferee
under the Operative Documents pursuant to the Owner Participant Guaranty.

"OP LLC AGREEMENT" shall mean the Amended and Restated Limited Liability
Company Agreement of Powerton Generation I, LLC, dated as of August 17, 2000.

"OP MEMBER" shall mean any Person holding a membership interest in the Owner
Participant pursuant to the OP LLC Agreement.

"OPTIONAL IMPROVEMENT" shall have the meaning specified in SECTION 8.2 of the
Facility Lease.

"ORGANIC DOCUMENT" shall mean, with respect to any Person that is a
corporation, its certificate of incorporation, its by-laws and all
shareholder agreements, voting trusts and similar arrangements applicable to
any of its authorized shares of capital stock; with respect to any Person
that is a limited partnership, its certificate of limited partnership and
partnership agreement; and with respect to any Person that is a limited
liability company, its certificate of formation and its limited liability
company agreement, in each case, as from time to time amended, supplemented,
amended and restated, or otherwise modified and in effect from time to time.

"OTHER FACILITY LEASE" shall mean the other Facility Lease Agreement, dated
as of August 17, 2000, by and between Midwest and the Other Owner Lessor
relating to the Other Powerton Lease Transaction, pursuant to which Midwest
will lease the Other Undivided Interest from the Other Owner Lessor.

"OTHER FACILITY LESSEE" shall mean the Facility Lessee under the Other
Facility Lease.

"OTHER FACILITY SITE LEASE" shall mean the other Facility Site Lease, dated
as of August 17, 2000, by and between Midwest and the Other Owner Lessor,
pursuant to which Midwest will lease the Other Ground Interest to the Other
Owner Lessor.

                                     35

<PAGE>

"OTHER FACILITY SITE SUBLEASE" shall mean the other Facility Site Sublease,
dated as of August 17, 2000, by and between the Other Owner Lessor and
Midwest, pursuant to which the Other Owner Lessor will sublease the Other
Ground Interest to Midwest.

"OTHER GROUND INTEREST" shall mean the undivided leasehold interest in the
Facility Site not conveyed to the Owner Lessor under the Facility Site Lease.

"OTHER LEVERAGED LEASE LIABILITIES" shall mean the basic rent, supplemental
rent, termination value or any other amount, liability or obligation that
Midwest is obligated to pay under the Other Facility Lease or the operative
documents for the Other Powerton Lease Transaction.

"OTHER MIDWEST LIABILITIES" shall have the meaning set forth in SECTION 18.19
of the Participation Agreement.

"OTHER OWNER LESSOR" shall mean Powerton Trust II, a Delaware business trust.

"OTHER OWNER PARTICIPANT" shall mean Powerton Generation II, LLC, a Delaware
limited liability company.

"OTHER POWERTON LEASE TRANSACTION" shall mean the transaction involving the
transfer of the Other Undivided Interest and the lease of the Other Ground
Interest to the Other Owner Lessor, and the simultaneous lease of the Other
Undivided Interest to Midwest and the simultaneous sublease of the Other
Ground Interest to Midwest on substantially the same terms and conditions as
under, and dated the same date as, the Overall Transaction.

"OTHER UNDIVIDED INTEREST" shall mean the undivided ownership interest in the
Facility not conveyed to the Owner Lessor under the Facility Deed and the
Land Deed.

"OVERALL TRANSACTION" shall mean the transactions contemplated by the
Operative Documents.

"OVERDUE RATE" shall mean the Applicable Rate plus 2% per annum.

                                     36

<PAGE>

"OWNER LESSOR" shall mean Powerton Trust I, a Delaware business trust created
for the benefit of the Owner Participant.

"OWNER LESSOR'S INTEREST" shall mean the Owner Lessor's right, title and
interest in and to (i) the Undivided Interest and (ii) the Ground Interest
under the Facility Site Lease.

"OWNER LESSOR'S LEASEHOLD TITLE POLICY" shall mean that certain Leasehold
Owner's policy, No. 121914-1, issued by Chicago Title Insurance Company to
the Owner Lessor dated August 24, 2000, to be redated the date of the
recording of the Memorandum of the Facility Site Lease, insuring the Owner
Lessor's (i) 63.6% undivided leasehold interest in the Facility Site as
lessee under the Facility Site Lease, and (ii) 63.6% undivided fee interest
in the Facility.

"OWNER LESSOR'S LIEN" shall mean any Lien on the Trust Estate or any part
thereof arising as a result of (i) Claims against or any act or omission of
the Trust Company or the Owner Trustee, or Affiliate thereof that is not
related to, or that is in violation of, any Operative Document or the
transactions contemplated thereby or that is in breach of any covenant or
agreement of the Trust Company or the Owner Trustee specified therein, (ii)
Taxes imposed upon the Trust Company or the Owner Trustee, or any Affiliate
thereof that are not indemnified against by EME or the Facility Lessee
pursuant to any Operative Document or are not related to, or that are in
violation of any Operative Document or the transactions contemplated thereby,
(iii) Claims against or affecting, the Trust Company or the Owner Trustee, or
any Affiliate thereof arising out of the voluntary or involuntary transfer by
the Trust Company or the Owner Trustee of any portion of the interest of the
Trust Company or the Owner Trustee in the Owner Lessor's Interest, other than
as contemplated or permitted by the Operative Documents.

"OWNER LESSOR'S PERCENTAGE" shall mean 63.6%.

"OWNER PARTICIPANT" shall mean Powerton Generation I, LLC, a Delaware limited
liability company.

"OWNER PARTICIPANT GUARANTY" shall mean the guaranty provided by the OP
Guarantor pursuant to SECTION 4.20 of the Participation Agreement.

                                     37

<PAGE>

"OWNER PARTICIPANT'S BENEFICIAL INTEREST" shall mean the Owner Participant's
interest in the Owner Lessor.

"OWNER PARTICIPANT'S COMMITMENT" shall mean the Owner Participant's
investment in the Owner Lessor contemplated by SECTION 2.1 of the
Participation Agreement.

"OWNER PARTICIPANT'S EXPECTED RETURN" with respect to the Owner Participant's
Commitment shall mean the Owner Participant's anticipated (i) net after-tax
yield, calculated according to the multiple investment sinking fund method of
analysis (as described in FAS 13) and (ii) aggregate GAAP income, general
pattern of after-tax earnings and after-tax cash flow.

"OWNER PARTICIPANT'S LIEN" shall mean any Lien on the Trust Estate or any
part thereof arising as a result of (i) Claims against or any act or omission
of the Owner Participant that is not related to, or that is in violation of,
any Operative Document or the transactions contemplated thereby or that is in
breach of any covenant or agreement of the Owner Participant set forth
therein, (ii) Taxes against the Owner Participant that are not indemnified
against by EME pursuant to the Operative Documents or (iii) Claims against or
affecting the Owner Participant arising out of the voluntary or involuntary
transfer by the Owner Participant (except as contemplated or permitted by the
Operative Documents) of any portion of the interest of the Owner Participant
in the Beneficial Interest.

"OWNER TRUST" shall mean the Owner Lessor.

"OWNER TRUSTEE" shall mean Wilmington Trust Company, a Delaware banking
corporation, not in its individual capacity, but solely as Owner Trustee
under the Trust Agreement and each other Person which may from time to time
be acting as Owner Trustee in accordance with the provisions of the Trust
Agreement.

"PARENT" shall mean any Person, any corporation, partnership, limited
liability company or other entity which, directly or indirectly, owns more
than 50% of the outstanding capital stock, partnership interests or other
equity interests having ordinary voting power to elect a majority of the
board of directors of any corporation (irrespective of whether at the time
capital stock of any other class or classes of such corporation shall or
might have voting power upon the occurrence of any

                                     38

<PAGE>

contingency) or controls the management of any partnership, limited liability
company or other entity.

"PARTICIPATION AGREEMENT" shall mean the Participation Agreement (T1), dated
as of August 17, 2000, among the Owner Lessor, the Owner Trustee, the Owner
Participant, EME, Midwest, United States Trust Company of New York, as Lease
Indenture Trustee and United States Trust Company of New York, as Pass
Through Trustees.

"PASS THROUGH COMPANY" shall mean United States Trust Company of New York, in
its individual capacity.

"PASS THROUGH TRUST AGREEMENTS" shall mean one or more, as the context may
require, of (i) the Pass Through Trust Agreement A, dated as of August 17,
2000, and (ii) the Pass Through Trust Agreement B, dated as of August 17,
2000, in each case between Midwest and a Pass Through Trustee.

"PASS THROUGH TRUSTEES" shall mean United States Trust Company of New York,
not in its individual capacity, but solely as Pass Through Trustee under each
of the Pass Through Trust Agreements, and each other Person which may from
time to time be acting as a Pass Through Trustee in accordance with the
provisions of a Pass Through Trust Agreement.

"PASS THROUGH TRUSTS" shall mean each of the pass through trusts created
pursuant to the Pass Through Trust Agreements.

"PBGC" shall mean the Pension Benefit Guaranty Corporation and any entity
succeeding to any or all of its functions under ERISA.

"PENSION PLAN" shall mean a "pension plan," as such term is defined in
Section 3(2) of ERISA (other than a Multiemployer Plan), and to which any
member of the Controlled Group has any liability, including any liability by
reason of having been a substantial employer within the meaning of Section
4063 of ERISA at any time during the preceding five years, or by reason of
being deemed to be a contributing sponsor under the preceding five years, or
by reason of being deemed to be a contributing sponsor under Section 4069 of
ERISA or having an obligation to contribute under Section 4212 of ERISA.

                                     39

<PAGE>

"PERMITTED ENCUMBRANCES" shall mean all matters shown as exceptions on
Schedule B to the Owner Lessor's Leasehold Title Policy as in effect on the
Closing Date, together with (to the extent it affects the Facility Site) that
certain unrecorded permit dated January 5, 1971 and unrecorded permit
supplement dated September 18, 1973 made by and between Chicago & Illinois
Midland Railway Company and ComEd, whereby Chicago & Illinois Midland Railway
grants to ComEd permission to construct, maintain, repair and utilize a
vehicular turnaround over a portion of the railway's main tract located in
the Southwest quarter of Section 9, Township 24 North, Bange 5 West of the
Third Principal Meridan, on the terms and conditions contained therein.

"PERMITTED INVESTMENTS" shall mean:

                  (a) direct obligations of, or obligations the principal of and
         interest on which are unconditionally guaranteed by, the United States
         of America (or by any agency thereof to the extent such obligations are
         backed by the full faith and credit of the United States of America),
         in each case maturing within one year from the date of acquisition
         thereof;

                  (b) investments in commercial paper maturing within 270 days
         from the date of acquisition thereof and having, at such date of
         acquisition, the highest credit rating obtainable from S&P or from
         Moody's;

                  (c) investments in certificates of deposit, banker's
         acceptances and time deposits maturing within 180 days from the date of
         acquisition thereof issued or guaranteed by or placed with, and money
         market deposit accounts issued or offered by, any domestic office of
         any commercial bank organized under the laws of the United States of
         America or any State thereof which has a combined capital and surplus
         and undivided profits of not less than $500,000,000; and

                  (d) fully collateralized repurchase agreements with a term of
         not more than 30 days for securities described in clause (a) above and
         entered into with a financial institution satisfying the criteria
         described in clause (c) above.

                                     40

<PAGE>

"PERMITTED LIENS" shall mean the Liens permitted under SECTION 4.02 of the
EME OP Guarantee.

"PERMITTED SECURED INDEBTEDNESS" shall mean Indebtedness permitted by each of
SECTION 8.2.1(b),(f),(g) or (j) of the Holdings Credit Agreement, SECTION
8.1(c), (g), (h) or (k) of each Applicable Participation Agreement (as
defined in the Intercreditor Agreement), and the correlative provisions of
any other Financing Document (as defined in the Intercreditor Agreement).

"PERSON" shall mean any natural person, corporation, partnership, limited
liability company, firm, association, trust, government, governmental agency
or any other entity, whether acting in an individual, fiduciary or other
capacity.

"PHASE I ENVIRONMENTAL SURVEY" shall mean a study, conducted in accordance
with standards promulgated by the American Society for Testing and Materials
or an equivalent environmental site assessment conducted pursuant to current
good customary and commercial practice, that (i) evaluates the potential for
Environmental Conditions to exist at the property that is the subject of the
study as a result of historical or current operations or activities at said
property and (ii) evaluates whether the subject property is in substantial
compliance with applicable Environmental Laws.

"PHASE II ENVIRONMENTAL SURVEY" shall mean a study, conducted pursuant to
current good customary and commercial practice, to evaluate potential
Environmental Conditions identified as a result of a Phase I Environmental
Survey through the collection and analysis of samples of environmental media
(including, in the reasonable judgment of the consultant performing the
study, samples of soils, subsurface soils, groundwater, surface water,
sediments, air or other environmental media) at the site which is the subject
of the study. Such study shall be designed to confirm the existence (or
nonexistence) of Environmental Conditions at the subject property that may
require further investigation, abatement, removal, monitoring, clean-up,
remediation or other response actions in accordance with applicable
Environmental Laws and, consistent with customary and commercial practice,
determine the nature, scope and extent of such Environmental Conditions.

"PLAN" shall mean any "employee benefit plan" (as defined in Section 3(3) of
ERISA) that is subject to ERISA, any "plan" (as defined in Section 4975(e)(1)
of the

                                     41

<PAGE>

Code) that is subject to Section 4975 of the Code, any trust created under
any such plan or any "governmental plan" (as defined in Section 3(32) of
ERISA or Section 414(d) of the Code) that is organized in a jurisdiction
having prohibitions on transactions with government plans similar to those
contained in Section 406 of ERISA or Section 4975 of the Code.

"PLEDGE AGREEMENTS" shall mean the EME Powerton (T1) Pledge Agreement, the
EME Powerton (T2) Pledge Agreement, the EME Joliet (T1) Pledge Agreement and
the EME Joliet (T2) Pledge Agreement.

"POWER PURCHASE AGREEMENT" shall mean the Power Purchase Agreement (Coal
Fired Stations) dated as of December 15, 1999 between Midwest and ComEd, as
the same may from time to time be amended, amended and restated, supplemented
or otherwise modified in accordance with the terms thereof.

"POWERTON STATION SITE" shall mean the Facility Site and the Retained
Facilities Site, as more fully described on Exhibit A attached to the
Facility Site Lease.

"PRICING ASSUMPTIONS" shall mean the "Pricing Assumptions" attached as
Schedule 10.1(c) to the Participation Agreement.

"PROCEEDS" shall mean the proceeds from the sale of the Certificates by the
Pass Through Trusts to the Certificateholders on the Closing Date.

"PRUDENT INDUSTRY PRACTICE" shall mean, at a particular time, (i) any of the
practices, methods and acts engaged in or approved by a significant portion
of the competitive electric generating industry operating in the United
States at such time, or (ii) with respect to any matter to which clause (i)
does not apply, any of the practices, methods and acts which, in the exercise
of reasonable judgment at the time the decision was made, could have been
expected to accomplish the desired result at a reasonable cost consistent
with good business practices, reliability, safety and expedition. Prudent
Industry Practice is not intended to be limited to the optimum practice,
method or act to the exclusion of all others, but rather to be a spectrum of
possible practices, methods or acts having due regard for, among other
things, manufacturers' warranties and the requirements of any Governmental
Authority of competent jurisdiction.

                                     42

<PAGE>

"PSEGR" shall mean PSEG Resources, Inc., a New Jersey corporation.

"PUHCA" -- see "Holding Company Act."

"PURCHASE AGREEMENT" shall mean the Purchase and Sale Agreement (T1), dated as
of August 17, 2000 between Midwest and the Equity Investor.

"PURCHASE PRICE" shall mean the Owner Lessor's Percentage of $785,300,000.

"RATING AGENCIES" shall mean S&P and Moody's.

"REASONABLE BASIS" for a position shall exist if tax counsel may properly advise
reporting such position on a tax return in accordance with Formal Opinion 85-352
issued by the Standing Committee on Ethics and Professional Responsibility of
the American Bar Association (or any successor to such opinion).

"REBUILDING CLOSING DATE" shall have the meaning specified in of SECTION 10.4(f)
of the Facility Lease.

"REGISTRATION RIGHTS AGREEMENT" shall mean the Registration Rights Agreement,
dated as of August 17, 2000 among EME, Midwest and Credit Suisse First Boston
Corporation and Lehman Brothers Inc., as representatives of the Initial
Purchasers.

"REGULATIONS T, U AND X" shall mean Regulations T, U and X of the Federal
Reserve System of the United States (or any successors thereto).

"REGULATORY EVENT OF LOSS" shall mean an Event of Loss specified in clause (iv)
of the definition of "Event of Loss."

"REGULATORY VIOLATION" shall mean (i) Midwest (A) becoming subject to
regulation as a "holding company" or a "subsidiary company" or an "affiliate"
of a "holding company" required to register under PUHCA or (B) becoming subject
to public utility regulation under the laws of the State of Illinois or (ii)
the failure of Midwest to (A) be an "exempt wholesale generator" under PUHCA,
(B) be interconnected with the high voltage network or to have access to
transmission services and ancillary services to sell wholesale electric power
or (C) have the authority to sell wholesale electric power at market-based
rates and, in the case of clause (i) or (ii),

                                       43
<PAGE>

such circumstance could reasonably be expected to result in a Material Adverse
Effect on Midwest.

"REIMBURSEMENT AGREEMENT" shall mean the reimbursement agreement, dated as of
August 17, 2000, between EME and Midwest.

"RELATED PARTY" shall mean, with respect to any Person or its successors and
assigns, an Affiliate of such Person or its successors and assigns and any
director, officer, servant, employee or agent of that Person or any such
Affiliate or their respective successors and assigns; PROVIDED, THAT the Trust
Company shall not be treated as a Related Party to any other party, the Owner
Trustee and the Owner Lessor shall not be treated as Related Parties to each
other and neither Owner Lessor nor Owner Trustee shall be treated as a Related
Party to any Owner Participant except that, for purposes of SECTION 14.1 of the
Participation Agreement, the Owner Lessor will be treated as a Related Party to
an Owner Participant to the extent that the Owner Lessor acts on the express
written direction or with the express written consent of an Owner Participant.

"RELEASE" shall mean the actual or threatened release, deposit, disposal or
leakage of any Hazardous Material at, into, upon or under any land, water or
air, or otherwise into the environment, including, without limitation, by means
of burial, disposal, discharge, emission, injection, spillage, leakage,
seepage, leaching, dumping, pumping, pouring, escaping, emptying and placement,
except as expressly authorized by a Governmental Approval.

"RENEWAL LEASE RENT" shall mean the scheduled Rent payable on each Rent Payment
Date during any First Wintergreen Renewal Lease Term, Second Wintergreen
Renewal Lease Term or FMV Renewal Lease Term, in each case as determined in
accordance with SECTION 15.3 of the Facility Lease.

"RENEWAL LEASE TERM" shall mean the First Wintergreen Renewal Lease Term, the
Second Wintergreen Renewal Lease Term or any FMV Renewal Lease Term.

"RENT" shall mean Basic Lease Rent, Renewal Lease Rent, if any, and
Supplemental Lease Rent.

                                       44
<PAGE>

"RENT PAYMENT DATE" shall mean the January 2 and July 2 of each year during the
Facility Lease Term.

"REPLACEMENT COMPONENT" shall have the meaning specified in SECTION 7.2 of the
Facility Lease.

"REPORTABLE EVENT" shall mean any of the events set forth in Section 4043(b) of
ERISA, other than those events as to which the thirty day notice period is
waived under subsections .13, .14, .16, .18, .19 or .20 of PBGC Reg. Section
2615.

"REQUIRED IMPROVEMENT' shall have the meaning specified in SECTION 8.1 of the
Facility Lease.

"REQUIREMENT OF LAW" shall mean, as to any person, the Organic Documents of
such Person, and any law (including any Environmental Law), treaty, rule or
regulation or determination of an arbitrator or a court or other Governmental
Authority, in each case applicable to or binding upon such Person or any of its
property or to which such Person or any of its property is subject.

"REQUISITION" shall have the meaning specified in clause (iii) of the
definition of "Event of Loss."

"RETAINED FACILITIES SITE" shall mean all the land comprising the Powerton
Station Site, excluding the Facility Site.

"RETURN ACCEPTANCE TESTS" shall mean the testing procedures (Part IV - Testing
Procedures to Demonstrate Capability) set forth in Appendix D to the Power
Purchase Agreement.

"REVENUES" shall mean in respect of any period, all cash amounts (other than
any payment under any intercompany note) received by the Holdings Loan Parties
during such period, including revenues from the sale of energy and capacity,
proceeds of business interruption insurance and all interest and other income
earned on amounts in the Cashflow Recapture Fund.

"REVENUE PROCEDURES" shall mean any revenue procedure issued by the Department
of Treasury.

                                       45
<PAGE>

"REVENUE RULINGS" shall mean any revenue ruling issued by the Department of
Treasury.

"S&P" shall mean Standard & Poor's Ratings Services (a division of McGraw-Hill
Companies, Inc.) and its successors and assigns.

"SASM&F" shall mean Skadden, Arps, Slate, Meagher & Flom LLP.

"SCHEDULED CLOSING DATE" shall mean August 24, 2000 and any date set for
Closing in a notice of postponement pursuant to SECTION 2.2(c) of the
Participation Agreement.

"SECOND WINTERGREEN RENEWAL LEASE TERM" shall have the meaning specified in
SECTION 15.1(b) of the Facility Lease.

"SECURED OBLIGATIONS" shall mean all obligations of Holdings, the Facility
Lessee, MGE or EMOC, under, with respect to or arising out of, without
duplication, (i) the principal of, premium (if any) and interest on, the Loans
(as defined in the Holdings Credit Agreement), (ii) the obligations of Holdings
under each Lease Obligations Guarantee (as defined in the Holdings Credit
Agreement) with respect to the Collins Lease Obligations, (iii) the obligations
of Holdings under the Letter of Credit Guarantee (as defined in the Holdings
Credit Agreement) and (iv) the principal of, premium (if any) and interest on,
Permitted Secured Indebtedness subject of a Designation Letter (as defined in
the Intercreditor Agreement).

"SECURITIES ACT" shall mean the Securities Act of 1933, or any similar federal
statute, and the rules and regulations of the Commission thereunder, all as the
same shall be in effect at the time.

"SEVERABLE IMPROVEMENT" shall mean any Improvement that is removable without,
other than in an immaterial respect, causing irreparable damage to the Facility.

"SPECIAL LESSEE TRANSFER AMOUNT" shall mean for any date the Equity Portion of
Termination Value on such date; PLUS (i) any unpaid Basic Lease Rent or Renewal
Lease Rent, as the case may be, due on or before the date of such
determination, PLUS (ii) if the determination date is a Rent Payment Date or an
Additional Rent Payment Date, the Basic Lease Rent or Renewal Lease Rent due on
such Rent Payment Date,

                                       46
<PAGE>

PLUS (iii) any other Rent payment under the Facility Lease or the Other
Operative Documents due and unpaid on such date.

"SPECIFIED MIDWEST INDEBTEDNESS" shall mean Indebtedness of the Holdings Loan
Parties held by or for the benefit of the Holdings Secured Parties, any other
Indebtedness permitted under the Lessee Financing Documents and any preferred
stock or other similar obligation of Holdings or Midwest held by unaffiliated
third parties.

"SUBLEASE GROUND INTEREST" shall mean Ground Interest as such term is
incorporated by reference into the Facility Site Sublease pursuant to SECTION 3
of the Facility Site Sublease.

"SUBORDINATION AGREEMENT" shall mean the Subordination Agreement, dated as of
August 17, 2000, among the Owner Lessor, the Owner Participant, the Lease
Indenture Trustee and the Holdings Collateral Agent.

"SUBSIDIARY" shall mean, with respect to any Person, any corporation,
partnership, limited liability company or other entity of which more than 50%
of the outstanding capital stock, partnership interests or other equity
interests having ordinary voting power to elect a majority of the board of
directors of such corporation (irrespective of whether at the time capital
stock of any other class or classes of such corporation shall or might have
voting power upon the occurrence of any contingency) or to control the
management of such partnership, limited liability company or other entity is at
the time directly or indirectly owned by such Person, by such Person and one or
more other Subsidiaries of such Person, or by one or more other Subsidiaries of
such Person.

"SUPPLEMENTAL FINANCING" shall have the meaning specified in SECTION 14.1 of
the Participation Agreement.

"SUPPLEMENTAL LEASE RENT" shall mean any and all amounts, liabilities,
indemnities and obligations (other than Basic Lease Rent) of Midwest which
arise out of, or which Midwest assumes or agrees to pay under, the Operative
Documents (whether or not identified as "Supplemental Lease Rent") to the Owner
Lessor or any other Person, including, but not limited to, Termination Value,
Make-Whole Premium, and Transaction Costs (other than costs, fees and expenses
associated with

                                       47
<PAGE>

or resulting from a Lease Indenture Event of Default which is not a Lease Event
of Default).

"SUPPORT SERVICES" shall mean all services and rights necessary for the
Facility Lessor (or any of its successors or permitted assigns) to own,
operate, use and maintain (and to transmit the power generated from) the
Facility during and after expiration or termination of the Facility Lease in
addition to and together with those services or rights provided pursuant to the
conveyance of the Ground Interest by the Ground Lessor to the Ground Lessee
under the Facility Site Lease.

"SURVEY" shall mean the survey No. 232-00064 prepared by Maurer Stutz, Inc. for
Edison Mission Energy, dated August 16, 2000, including revisions thereto.

"SYNTHETIC LEASE" means the Lease Agreement dated as of June 23, 2000 between
Midwest and Synthetic Lease Trust.

"SYNTHETIC LEASE BASIC DOCUMENTS" means the Basic Documents as defined in the
Synthetic Lease Participation Agreement.

"SYNTHETIC LEASE ENVIRONMENTAL INDEMNITY OBLIGATIONS" has the meaning set forth
in the Synthetic Lease Participation Agreement.

"SYNTHETIC LEASE INTERCOMPANY NOTE" means the Intercompany Note dated June 23,
2000 issued by Edison Mission Energy to Midwest.

"SYNTHETIC LEASE LIABILITIES" means the basic rent, the supplemental rent or
any other amount, liability or obligation that Midwest is obligated to pay
under the Synthetic Lease or the other Synthetic Lease Basic Documents.

"SYNTHETIC LEASE PARTICIPATION AGREEMENT" means the Participation Agreement
dated as of June 23, 2000 by and among Midwest, Edison Mission Energy, EME/CDL
Trust, investors party thereto, noteholders party thereto, Wilmington Trust
Company, and Citicorp North America, Inc.

"SYNTHETIC LEASE TRUST" means EME/CDL Trust, a Delaware statutory business
trust.

                                       48
<PAGE>

"TANGIBLE NET WORTH" shall mean the net worth of EME and its Subsidiaries
(determined on a consolidated basis in accordance with GAAP) after subtracting
therefrom the aggregate amount of any intangible assets of EME and its
Subsidiaries (determined on a consolidated basis in accordance with GAAP),
including goodwill, franchises, licenses, patents, trademarks, trade names,
copyrights, service marks and brand names.

"TAX" or "TAXES" shall mean all fees (including, without limitation, license,
documentation and registration fees), taxes (including, without limitation,
income, gross receipt, franchise, rental, turn over, excise, sales taxes, use
taxes, stamp taxes, value-added taxes, ad valorem taxes and property taxes
(personal and real, tangible and intangible), license, levies, exports, duties,
recording charges or fees, assessments, withholdings and other charges and
impositions of any nature, plus all related interest, penalties, fines and
additions to tax, now or hereafter imposed by any federal, state, local or
foreign government or other taxing authority.

"TAX INDEMNITY AGREEMENT" shall mean the Tax Indemnity Agreement (T1), dated as
of August 17, 2000 between EME and the Owner Participant.

"TAX LAW CHANGE" shall have the meaning specified in SECTION 15 of the
Participation Agreement.

"TERMINATION DATE" shall mean each of the monthly dates during the Facility
Lease Term identified as a "Termination Date" on Schedule 2 of the Facility
Lease, which dates shall be the same days on which Basic Lease Rent and Renewal
Lease Rent, if any, are payable under the Facility Lease.

"TERMINATION VALUE" shall mean for any Termination Date shall mean the
Termination Values set forth in Column D on Schedule 2 of the Facility Lease
for such Termination Date.

"TITLE POLICIES" shall mean the following title policies, issued by Chicago
Title Insurance Company: (a) that certain Leasehold Owner's policy, No.
121914-1, issued to the Owner Lessor dated August 24, 2000, to be redated the
date of the recording of the Memorandum of the Facility Site Lease, insuring
the Owner Lessor's (i) 63.6% undivided leasehold interest in the Facility Site
as lessee under the Facility Site Lease, and (ii) 63.6% undivided fee interest
in the Facility and (b) that

                                       49
<PAGE>

certain Leasehold Loan policy No. 121914-1, issued to United States Trust
Company of New York, as Lease Indenture Trustee, dated August 24, 2000, to be
redated the date of the recording of the Memorandum of the Facility Site Lease,
insuring the Lease Indenture Trustee's security interest in the Owner Lessor's
(i) leasehold interests in the Facility Site Lease and (ii) fee interest in the
Facility.

"TRANSACTION COSTS" shall mean the following costs and expenses incurred in
connection with the negotiation, due diligence and consummation of the Overall
Transaction:

         (a) the cost of the Closing Date Appraisal, the cost of title
insurance, if obtained, filing and recording fees, the fees and expenses of the
Engineering Consultant, the environmental consultant, R.W. Beck, special
engineering consultant, the Insurance Consultant, and any other consultants
retained by the Owner Participant (excluding any fees or compensation to its
advisors) and approved by EME, which approval may not be unreasonably withheld;

         (b) the reasonable legal fees, expenses and disbursements of the
Equity Investor, the Owner Participant, the Owner Lessor and the Owner Trustee
and out-of-pocket expenses of the Equity Investor's Advisor;

         (c) the reasonable legal fees, expenses and disbursements of the other
Lease Financing Parties associated with the Lessor Notes and the Certificates;

         (d) the Midwest Advisor's fee and its reasonable out-of-pocket costs
and expenses;

         (e) at EME's option, all or a portion of EME's and Midwest's legal
fees and reasonable out-of-pocket cost and expenses related thereto;

         (f) other reasonable, documented out-of-pocket expenses of the Lease
Financing Parties;

         (g) ongoing fees and expenses of any independent director of the Owner
Participant required to give any non-consolidation opinion, but only in the
event that such opinion is requested with respect to both (i) the Owner
Participant owned,

                                       50
<PAGE>

directly or indirectly, by PSEGR and (ii) the Owner Participant owned, directly
or indirectly, by Associates; and

         (h) the fees and expenses of the Rating Agencies.

"TRANSFEREE" shall have the meaning specified in SECTION 10.1(a) of the
Participation Agreement.

"TREASURY REGULATIONS" shall mean regulations, including temporary regulations,
promulgated under the Code.

"TRUST AGREEMENT" shall mean the Amended and Restated Trust Agreement (T1),
dated as of August 17, 2000, between the Owner Participant and the Trust
Company relating to Powerton Trust I.

"TRUST COMPANY" shall mean the Wilmington Trust Company.

"TRUST ESTATE" shall have the meaning specified in SECTION 2.03 of the Trust
Agreement.

"UNDIVIDED INTEREST" shall have the meaning specified in the Recitals to the
Facility Lease.

"UNDIVIDED INTEREST PERCENTAGE" shall mean 63.6%.

"UNIFORM COMMERCIAL CODE" or "UCC" shall mean the Uniform Commercial Code as in
effect in the applicable jurisdiction.

"UNITED STATES" or "U.S." shall mean the United States of America.

"UNRELATED MEMBERS" shall mean any members of the Owner Participant or the
Other Owner Participant which are not Affiliates of the other members of either
the Owner Participant or the Other Owner Participant; PROVIDED, HOWEVER, that
for purposes of this definition, if any two or more members are Affiliates,
such members, together, shall be considered as one Unrelated Member.

                                       51
<PAGE>

"VERIFIER" shall mean Warren & Selbert, Inc. or a nationally recognized firm of
accountants or lease advisors chosen by the Owner Participant and reasonably
acceptable to the Facility Lessee.

"WELFARE PLAN" shall mean a "welfare plan," as such term is defined in Section
3(1) of ERISA.

"WILMINGTON TRUST COMPANY" shall mean Wilmington Trust Company, a Delaware
banking corporation.

                                       52

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