Document:

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                                                                   Exhibit 4.6

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                          LEASE SUBORDINATION AGREEMENT

                          dated as of December __, 2001

                                  by and among

                                    [GE LLC],
                              as the Owner Lessor,

                         [GE CAPITAL OWNER PARTICIPANT],
                            as the Owner Participant,

                                       AND

                              THE BANK OF NEW YORK
                                 as successor to

                    UNITED STATES TRUST COMPANY OF NEW YORK,
                              as the Security Agent

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                             SUBORDINATION AGREEMENT

     This SUBORDINATION AGREEMENT, dated as of December __, 2001 (this
"AGREEMENT"), is by and among [GE LLC], as the Owner Lessor under the Facility
Lease referred to below, [GE CAPITAL OWNER PARTICIPANT], as the Owner
Participant under the Participation Agreement referred to below, and [UNITED
STATES TRUST COMPANY OF NEW YORK], not in its individual capacity but solely as
the Security Agent under the Lease Indenture ( as defined in the Participation
Agreement referred to below).

                                    RECITALS

     WHEREAS, the holders of the Initial Lessor Notes (as such term is defined
in the Participation Agreement) have purchased the Initial Lessor Notes from the
Owner Lessor and have been granted a security interest in the Facility Lease as
collateral for the Initial Lessor Notes;

     WHEREAS, contemporaneously herewith EME Homer City Generation, L.P. ("HOMER
CITY"), a wholly owned subsidiary of Edison Mission Midwest Holdings Co.
("HOLDINGS"), will enter into a transaction pursuant to the Participation
Agreement by and among Homer City, the Owner Lessor, [_______], not in its
individual capacity but solely as Owner Manager, the Owner Participant, Homer
City Funding LLC, as Lender, the Security Agent and United States Trust Company
of New York, not in its individual capacity but solely as Bondholder Trustee (as
amended, modified and supplemented and in effect from time to time, the
"PARTICIPATION AGREEMENT") whereby Homer City would sell certain of its
generating assets to the Owner Lessor and the Owner Lessor would lease such
generating assets to Homer City under the Facility Lease;

     WHEREAS, in connection with the transactions contemplated by the
Participation Agreement, Holdings and Homer City requested the Lender to approve
such sale and lease-back of such generating assets;

     WHEREAS, as a consideration for the Lender's approval of the transactions
contemplated by the Participation Agreement, the parties hereto will agree to
subordinate certain claims against Homer City under the Participation Agreement
and the other Operative Documents to the rights of holders of the Initial Lessor
Notes (as defined in the Participation Agreement as of the date hereof and as
such term may hereafter be modified with the consent of the Security Agent); and

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     WHEREAS, the execution and delivery of this Agreement is a condition
precedent to the effectiveness of the Participation Agreement.

                                    AGREEMENT

     NOW, THEREFORE, in consideration of the foregoing, and for other good and
valuable consideration, the receipt and adequacy of which are hereby
acknowledged, the parties hereto agree as follows:

                                   ARTICLE I
                     DEFINITIONS; PRINCIPLES OF CONSTRUCTION

     SECTION 1.1 DEFINITIONS.

          (a) PARTICIPATION AGREEMENT. Unless otherwise expressly provided
herein, capitalized terms used but not defined in this Agreement shall have the
meanings given to such terms in Appendix A to the Participation Agreement.

          (b) OTHER DEFINED TERMS. The following terms, when used herein, shall
have the following meanings:

          "SUBORDINATED LEVERAGED LEASE OBLIGATIONS" shall mean, the Equity
     Portion of Basic Lease Rent, the Equity Portion of Termination Value and
     any Supplemental Rent (constituting Excepted Payments) with respect to
     Excepted Payments now or hereafter owed by Homer City to the Owner
     Participant or the Owner Lessor under the Operative Documents; provided,
     however, that the following items shall be excluded from the Subordinated
     Leveraged Lease Obligations: (a) any Excepted Payments owing to the Owner
     Lessor on account of fees and indemnities owed to the Owner Manager; and
     (b) Rent paid from the Reserve Account.

          "PROCEEDING" shall have the meaning given to such term in SECTION 3.2.

          "SENIOR CLAIMS" shall have the meaning given to such term in SECTION
     2.1(a).

          "SENIOR LEVERAGED LEASE OBLIGATIONS" shall mean Basic Lease Rent
     (other than the Equity Portion of Basic Lease Rent), Termination Value

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     (other than the Equity Portion of Termination Value), any Supplemental Rent
     (whether for indemnities, costs, expenses or otherwise) now or hereafter
     owed by Homer City to the Owner Lessor, the Security Agent, the Lease
     Indenture Trustee, the Lender or the Bondholder Trustee under the Operative
     Documents and any other sum now or hereafter owed with respect to the
     Initial Lessor Notes (whether for principal thereof, interest thereon, or
     make-whole payments thereof or otherwise).

          "SUBORDINATED CLAIMS" shall mean, as at any date of determination, the
     aggregate amount of all Subordinated Leveraged Lease Obligations for all
     Fiscal Quarters ending on or immediately prior to such date to the extent
     not discharged prior to such date pursuant to and in compliance with the
     provisions of Section 6.9 of the Participation Agreement.

          "SUBORDINATED PARTIES" shall mean the Owner Lessor and the Owner
     Participant in their capacity as holders of the Subordinated Claims.

     SECTION 1.2 PRINCIPLES OF CONSTRUCTION. Unless otherwise expressly provided
herein, the principles of construction set forth in the Participation Agreement
shall apply to this Agreement.

                                   ARTICLE II
                            SUBORDINATION PROVISIONS

     SECTION 2.1 SUBORDINATION OF CLAIMS. Until all Senior Leveraged Lease
Obligations shall have been paid in full:

          (a) the Subordinated Claims shall be subordinate, to the extent and in
the manner hereinafter set forth, to the prior payment of, and junior in right
of payment to, any and all Senior Leveraged Lease Obligations whether now
existing or hereafter incurred or created (collectively, the "SENIOR CLAIMS");

          (b) Homer City shall not, directly or indirectly, except with respect
to withdrawals from the Equity Account pursuant to Section 7.1(a) of the Amended
Security Desposit Agreement and Section 17.1(g) of the Facility Lease, make any
payment on account of, or transfer any collateral for any part of, any
Subordinated Claims; PROVIDED, HOWEVER, that, as long as no Lease Event of
Default (other than a Rent Default Event) has occurred and is continuing under
the Facility

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Lease and subject to Section 6.9 of the Participation Agreement, Homer City may
make payments of Basic Lease Rent, Supplemental Rent and Renewal Lease Rent; and

          (c) without the consent of the Lease Indenture Trustee, the
Subordinated Parties shall not demand, sue for or accept (other than with
respect to withdrawals from the Equity Account pursuant to Section 7.1(a) of the
Amended Security Desposit Agreement and Section 17.1(g) of the Facility Lease)
from Homer City any payment or collateral in respect of any Subordinated Claims,
or take any other action to enforce its rights or exercise any remedies in
respect of any Subordinated Claims (whether upon the occurrence or during the
continuation of a Lease Event of Default under the Facility Lease).

          (d) Neither Homer City nor the Subordinated Parties shall otherwise
take any action prejudicial to or inconsistent with the priority position of the
Secured Parties over the Subordinated Parties created by this Section 2.1.

     SECTION 2.2 RELIANCE. All Senior Claims shall conclusively be deemed to
have been created, contracted or incurred in reliance on the subordination
provisions contained in this Agreement and all dealings between Homer City, the
Subordinated Parties and each of the holders of Senior Claims shall be deemed to
have been consummated in reliance upon the subordination provisions contained
herein.

     SECTION 2.3 OTHER HOLDERS. The subordination provisions set forth in this
Agreement shall be binding upon transferees or assignees of each of the
Subordinated Parties and upon each other holder of Subordinated Claims and shall
inure to the benefit of transferees or assignees of every holder of the Initial
Lessor Notes.

                                  ARTICLE III
                              WRONGFUL COLLECTIONS

     SECTION 3.1 TURNOVER. Should any payment on account of, or any collateral
for any part of, any Subordinated Claims be received by the Subordinated Party
in violation of this Agreement or the provisions of SECTION 6.9 of the
Participation Agreement, such payment or collateral shall be delivered forthwith
to the Security Agent in the same form as so received (with any necessary
endorsement). Until so delivered, any such payment or collateral shall be held
by such Subordinated Party in trust for the holders of the Senior Claims and
shall not be

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commingled with other funds or property of such Subordinated Party. The Security
Agent is hereby irrevocably authorized to supply any endorsement or assignment
which may have been omitted which the Security Agent may reasonably deem
necessary or advisable to enforce its rights under this Agreement, including,
without limitation, authority to receive, endorse and collect all instruments
made payable to any Subordinated Party representing any distribution, interest
payment or other payments in respect of the Subordinated Claims.

     SECTION 3.2 SURVIVAL OF OBLIGATION. The obligation of the Subordinated
Party to deliver to the Security Agent any payment or collateral received in
connection with any Subordinated Claims, as set forth in SECTION 3.1, shall
survive and shall not be in any way affected by the result of any (a)
insolvency, bankruptcy, receivership, liquidation, reorganization, readjustment,
composition or other similar proceeding relating to Homer City, its property or
its creditors as such, (b) proceeding for any liquidation, dissolution or other
winding-up of Homer City, voluntary or involuntary, whether or not involving
insolvency or bankruptcy proceedings, (c) assignment for the benefit of
creditors, (d) other marshalling of the assets of Homer City or (e) general
meeting of creditors of Homer City, in each case, under the laws of the United
States or any other jurisdiction (any such event, a "PROCEEDING").

                                   ARTICLE IV
                                   PROCEEDINGS

     SECTION 4.1 COMMENCEMENT OF PROCEEDINGS. Except to the extent otherwise
provided herein, no Subordinated Party shall commence, or join with any other
creditor or creditors of Homer City in commencing, any Proceeding against Homer
City without the consent of the Lease Indenture Trustee.

     SECTION 4.2 PAYMENTS AND DISTRIBUTIONS. In the event of any Proceeding,
until all Senior Leveraged Lease Obligations shall have been paid in full,
any payment or distribution of any kind or character on account of a
Subordinated Claim, whether in cash, property or securities, which, but for
the subordination provisions of this Agreement would otherwise be payable or
deliverable upon or in respect of Subordinated Claims, shall instead be paid
over or delivered to the Security Agent and no holder of Subordinated Claims
shall be entitled to receive any such payment or distribution or any benefit
therefrom.

     SECTION 4.3 ENFORCEMENT OF SUBORDINATED CLAIMS.

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          (a) COOPERATION. The Subordinated Parties shall cooperate fully with
the Security Agent and perform all acts reasonably requested by the Security
Agent to enable the Security Agent to enforce any Subordinated Claims,
including, without limitation, filing appropriate proofs of claim and executing
and delivering all necessary powers of attorney, assignments or other
instruments.

          (b) ENFORCEMENT BY THE SUBORDINATED PARTY. After the commencement of
any Proceeding, the requesting Subordinated Party may (but shall not be required
to) proceed to file a proof of claim, enter appearances and file affirmative or
responsive pleadings with respect to such Subordinated Claims and take such
further steps with respect thereto, not inconsistent with this Agreement, as the
requesting Subordinated Party may deem proper.

          (c) SUBROGATION. The Subordinated Parties shall not have any
subrogation or other rights as a holder of Senior Claims, and each Subordinated
Party hereby irrevocably waives all such rights of subrogation and all rights of
reimbursement or indemnity whatsoever and all rights of recourse to any security
for any Senior Claims, until such time as all Senior Leveraged Lease Obligations
shall have been paid in full. Subject to and from and after the payment in
full, of all Senior Leveraged Lease Obligations, each Subordinated Party
shall be subrogated to any rights of the holders of Senior Claims to receive
payments or distributions of cash, property or securities of Homer City
applicable to any Subordinated Claims until all amounts owing on such
Subordinated Claims shall be paid in full.

          (a) ENFORCEMENT BY THE HOLDERS OF THE SENIOR CLAIMS. At any
Proceeding, until all Obligations shall have been paid in full, the holders
of the Senior Claims are hereby irrevocably authorized (but not required) to:

               (i) enforce claims comprising Subordinated Claims in the name of
          the Subordinated Party by proof of debt, proof of claim, suit or
          otherwise;

              (ii) collect any assets of any Owner Lessor distributed, divided
          or applied by way of dividend or payment, and any securities issued,
          in each case, on account of Subordinated Claims and apply the same, or
          the proceeds of any realization upon the same that the Indenture
          Estate in their discretion elect to effect, to Senior Claims until all
          Obligations shall have been paid in full;

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          provided, however, that the Lease Indenture Estate shall render any
          surplus to the Subordinated Party or its affiliates, as their
          interests appear, or interplead such surplus with a court of competent
          jurisdiction;

             (iii) vote claims comprising Subordinated Claims to accept or
          reject any plan of partial or complete liquidation, reorganization,
          arrangement, composition or extension; and

              (iv) take generally any action in connection with any such
          Proceeding which the Subordinated Party might otherwise take.

                                   ARTICLE V
                              LIMITATION ON ACTIONS

     SECTION 5.1 ACTIONS PROHIBITED. Until all Senior Leveraged Lease
Obligations shall have been paid in full, except as otherwise expressly
provided herein, the Subordinated Parties shall not, without the prior written
consent of the Security Agent:

          (a) take, obtain or hold (or permit anyone acting on its behalf to
take, obtain or hold) any assets of Homer City (other than Homer City's interest
in the Facility and the Facility Site), whether as a result of any
administrative, legal or equitable action, or otherwise, in violation of the
subordination provisions contained in this Agreement;

          (b) commence, prosecute or participate in (i) any administrative,
legal or equitable action against or involving Homer City relating to the
payment or collection of any Subordinated Claims, including, without limitation,
any Proceeding, or (ii) any administrative, legal or equitable action to (a)
enforce or collect any judgment obtained in respect of any Subordinated Claims,
(b) enforce or exercise remedies seeking to collect or enforce payment of any
Subordinated Claims or (c) enforce or exercise remedies under or pursuant to any
lien or other security interest securing any Subordinated Claims; or

          (c) exercise any other rights or remedies to enforce the payment or
collection of any Subordinated Claims or any collateral security provided with
respect to such Subordinated Claims.

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     SECTION 5.2 DEFENSE IN ACTION. If the Subordinated Party, in violation of
the provisions herein set forth, shall commence, prosecute or participate in any
suit, action, case or Proceeding referred to in Section 5.1, the Owner Lessor
may interpose as a defense or plea the provisions set forth herein, and any
holder of any Senior Claims may intervene and interpose such defense or plea in
its own name or in the name of the Owner Lessor, and shall, in any event, be
entitled to restrain the enforcement of the provisions of any Subordinated
Claims in its own name or in the name of the Owner Lessor, as the case may be,
in the same suit, action, case or Proceeding or in any independent suit, action,
case or Proceeding.

                                   ARTICLE VI
                             SUBORDINATION ABSOLUTE

     SECTION 6.1 SURVIVAL OF RIGHTS. The rights under this Agreement of the
holders of Senior Claims as against the Subordinated Parties shall remain in
full force and effect without regard to, and shall not be impaired or affected
by:

          (a) any act or failure to act on the part of Homer City;

          (b) any extension or indulgence in respect of any payment or
prepayment of any Senior Claims or any part thereof or in respect of any other
amount payable to any holder of any Senior Claims;

          (c) any amendment, modification or waiver of, or addition or
supplement to, or deletion from, or compromise, release, consent or other action
in respect of, any of the terms of any Senior Claims;

          (d) (i) any exercise or non-exercise by the holder of any Senior
Claims of any right, power, privilege or remedy under or in respect of such
Senior Claims or the subordination provisions contained herein, (ii) any waiver
by the holder of any Senior Claims of any right, power, privilege or remedy or
of any default in respect of such Senior Claims or the subordination provisions
contained herein or (iii) any receipt by the holder of any Senior Claims or any
failure by such holder to perfect a security interest in, or any release by such
holder of, any security for the payment of such Senior Claims;

          (e) any merger or consolidation of Homer City or any of its
subsidiaries into or with other Person, or any sale, lease or transfer of any or
all of the assets of Homer City or any of its subsidiaries to any other Person,
PROVIDED that

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such merger or consolidation is effected in compliance with the relevant
provisions of the Participation Agreement;

          (f) any payment or other distribution to any holder of any Senior
Claims in any Proceeding;

          (g) absence of any notice to, or knowledge by, the Subordinated
Parties of the existence or occurrence of any of the matters or events set forth
in the foregoing clauses (a) through (f); or

          (h) any other circumstance.

     The provisions of this SECTION 6.1 are not in derogation of, and are not
intended to affect in any way, any rights or remedies of, or available to, the
Subordinated Parties that may arise under the other Operative Documents directly
or indirectly as a consequences of acts, events or circumstances set forth
above.

     Section 6.2 Waivers.

          (a) WAIVER OF DEFENSES. Each Subordinated Party hereby irrevocably
waives, in any proceeding by the holders of Senior Claims to enforce their
rights under this Agreement, any defense based on the adequacy of a remedy at
law which might be asserted as a bar to the remedy of specific performance of
this Agreement.

          (b) OTHER WAIVERS. Each Subordinated Party hereby irrevocably waives
(i) notice of any of the matters referred to in SECTION 6.1, (ii) all notices
which may be required, whether by statute, rule of law or otherwise, to preserve
intact any rights of any holder of any Senior Claims against Homer City,
including, without limitation, any demand, presentment and protest, or any proof
of notice of nonpayment under any document evidencing such Senior Claims, (iii)
notice of the acceptance of or reliance on this Agreement by the holders of
Senior Claims, (iv) notice of any renewal, extension or accrual of any Senior
Claims, or any loans made or other action taken in reliance on this Agreement,
(v) any right to the enforcement, assertion or exercise by any holder of any
Senior Claims of any right, power, privilege or remedy conferred in any document
evidencing such Senior Claims, or otherwise, (vi) any requirement of diligence
on the part of any holder of any Senior Claims, (vii) any requirement on the
part of any holder of any Senior Claims to mitigate damages resulting from any
default under any documents

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evidencing such Senior Claims and (viii) any notice of any sale, transfer or
other disposition of any Senior Claims by any holder thereof.

     SECTION 6.3 ASSENT. Each Subordinated Party hereby irrevocably assents to
(a) any renewal, extension or postponement of the time of payment of any Initial
Lessor Notes or any other indulgence with respect thereto, (b) any increase in
the amount of any Initial Lessor Notes, subject to the provisions of the
Operative Documents, (c) any substitution, exchange or release of collateral for
any Initial Lessor Notes, (d) the addition or release of any Person primarily or
secondarily liable for any Initial Lessor Notes and (e) the provisions of any
instrument, security or other writing evidencing any Initial Lessor Notes.

                                  ARTICLE VII
                             HOMER CITY OBLIGATIONS

     The provisions of this Agreement are intended solely for the purpose of
defining the relative rights and obligations of the Subordinated Parties and the
holders of Senior Claims. Nothing contained herein is intended to affect the
relative rights of the Subordinated Parties and creditors of Homer City other
than the holders of Senior Claims.

                                  ARTICLE VIII
                               OPINION OF COUNSEL

     Each Subordinated Party shall deliver to the Security Agent an opinion of
counsel in form and substance satisfactory to the Security Agent, as to the
enforceability of this Agreement against such Subordinated Party.

                                   ARTICLE IX
                  RIGHTS OF OWNER LESSOR AND OWNER PARTICIPANT

     Neither this Agreement not the provisions herein shall prevent the Owner
Participant or the Owner Lessor, as the case may be, from exercising its Section
9.1 Rights, other than the rights to demand and receive payments on account of
Subordinated Claims.

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                                    ARTICLE X
                                   TERMINATION

     This Agreement shall terminate when all Senior Leveraged Lease Obligations
with respect to the Initial Lessor Notes shall have been paid in full.

                                   ARTICLE XI
                            MISCELLANEOUS PROVISIONS

     Section 11.1 WAIVERS, AMENDMENTS.

          (a) The provisions of this Agreement may from time to time be amended,
modified or waived, if such amendment, modification or waiver is in writing and
consented to by the Security Agent, the Owner Manager and each other party
hereto except that such consent of the Security Agent will be required only if
such amendment, modification or waiver increases the obligations of the Security
Agent hereunder or adversely affects the rights of the Security Agent hereunder.

          (b) No failure or delay in exercising any power or right under this
Agreement shall operate as a waiver thereof, nor shall any single or partial
exercise of any such power or right preclude any other or further exercise
thereof or the exercise of any other power or right. No notice to or demand on
any party in any case shall entitle it to any notice or demand in similar or
other circumstances. No waiver or approval under this Agreement shall, except as
may be otherwise stated in such waiver or approval, be applicable to subsequent
transactions. No waiver or approval hereunder shall require any similar or
dissimilar waiver or approval thereafter to be granted hereunder.

     Section 11.2 NOTICES. All notices and other communications provided to any
party hereto under this Agreement shall be in writing or by facsimile and
addressed, delivered or transmitted to such party at its address or facsimile
number set forth below or at such other address or facsimile number as may be
designated by such party in a written notice to the other parties:

Owner Lessor:

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Owner Participant:

                                    WITH A COPY TO:

Security Agent:

Homer City:

Any notice, if mailed and properly addressed with postage prepaid shall be
effective five (5) Business Days after being sent or if properly addressed and
sent by pre-paid courier service, shall be deemed given when received; any
notice, if transmitted by facsimile, shall be deemed given when transmitted (if
confirmed).

     Section 11.3 SEVERABILITY. Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such provision
and such jurisdiction, be ineffective to the extent of such prohibition or
unenforceability without invalidating the remaining provisions of this
Agreement or affecting the validity or enforceability of such provision in
any other jurisdiction.

     Section 11.4 HEADINGS. The various headings of this Agreement are
inserted for convenience only and shall not affect the meaning or
interpretation of this Agreement or any provisions hereof or thereof.

     Section 11.5 EXECUTION IN COUNTERPARTS, EFFECTIVENESS. This Agreement
may be executed by the parties hereto in several counterparts, each of which
shall be deemed to be an original and all of which shall constitute together
but one and the same agreement.

     Section 11.6 GOVERNING LAW; ENTIRE AGREEMENT. THIS AGREEMENT SHALL BE
DEEMED TO BE A CONTRACT MADE UNDER

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AND GOVERNED BY THE LAWS OF THE STATE OF NEW YORK. This Agreement constitutes
the entire understanding among the parties hereto with respect to the subject
matter hereof and supersede any prior agreements, written or oral, with respect
thereto.

     SECTION 11.7 SUCCESSORS AND ASSIGNS. This Agreement shall be binding upon
and shall inure to the benefit of the parties hereto and their respective
successors and assigns.

     Section 11.8 FORUM SELECTION AND CONSENT TO JURISDICTION. ANY LITIGATION
BASED HEREON, OR ARISING OUT OF, UNDER, OR IN CONNECTION WITH, THIS
AGREEMENT, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER
VERBAL OR WRITTEN) OR ACTIONS OF ANY PARTY HERETO SHALL BE BROUGHT AND
MAINTAINED EXCLUSIVELY IN THE COURTS OF THE STATE OF NEW YORK OR IN THE
UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF NEW YORK. EACH
PARTY HERETO HEREBY EXPRESSLY AND IRREVOCABLY SUBMITS TO THE JURISDICTION OF
THE COURTS OF THE STATE OF NEW YORK AND OF THE UNITED STATES DISTRICT COURT
FOR THE SOUTHERN DISTRICT OF NEW YORK FOR THE PURPOSE OF ANY SUCH LITIGATION
AS SET FORTH ABOVE AND IRREVOCABLY AGREES TO BE BOUND BY ANY JUDGMENT
RENDERED THEREBY IN CONNECTION WITH SUCH LITIGATION. EACH PARTY HERETO
FURTHER IRREVOCABLY CONSENTS TO THE SERVICE OF PROCESS BY REGISTERED MAIL,
POSTAGE PREPAID, OR BY PERSONAL SERVICE WITHIN OR WITHOUT THE STATE OF NEW
YORK. EACH PARTY HERETO HEREBY EXPRESSLY AND IRREVOCABLY WAIVES, TO THE
FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION WHICH IT MAY HAVE OR HEREAFTER
MAY HAVE TO THE LAYING OF VENUE OF ANY SUCH LITIGATION BROUGHT IN ANY SUCH
COURT REFERRED TO ABOVE AND ANY CLAIM THAT ANY SUCH LITIGATION HAS BEEN
BROUGHT IN AN INCONVENIENT FORUM. TO THE EXTENT THAT ANY PARTY HERETO HAS OR
HEREAFTER MAY ACQUIRE ANY IMMUNITY FROM JURISDICTION OF ANY COURT OR FROM ANY
LEGAL PROCESS (WHETHER THROUGH SERVICE OR NOTICE, ATTACHMENT PRIOR TO
JUDGMENT, ATTACHMENT IN AID OF EXECUTION OR OTHERWISE) WITH RESPECT TO ITSELF
OR ITS PROPERTY, SUCH PARTY HEREBY IRREVOCABLY WAIVES SUCH IMMUNITY IN
RESPECT OF ITS OBLIGATIONS UNDER THIS AGREEMENT.

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     Section 11.9 WAIVER OF JURY TRIAL. EACH PARTY HEREBY KNOWINGLY,
VOLUNTARILY AND INTENTIONALLY WAIVES ANY RIGHTS IT MAY HAVE TO A TRIAL BY
JURY IN RESPECT OF ANY LITIGATION BASED HEREON, OR ARISING OUT OF, UNDER, OR
IN CONNECTION WITH, THIS AGREEMENT, OR ANY COURSE OF CONDUCT, COURSE OF
DEALING, STATEMENTS (WHETHER VERBAL OR WRITTEN) OR ACTIONS OF ANY PARTY
HERETO. EACH PARTY ACKNOWLEDGES AND AGREES THAT IT HAS RECEIVED FULL AND
SUFFICIENT CONSIDERATION FOR THIS PROVISION AND THAT THIS PROVISION IS A
MATERIAL INDUCEMENT FOR THE OTHER PARTIES ENTERING INTO THIS AGREEMENT.

     Section 11.10 LIMITATIONS OF LIABILITY OF [TRUSTEE]. It is expressly
understood and agreed by the parties hereto that this Agreement is executed by
______ Trust Company, not individually or personally, but solely as Trustee
under the Trust Agreement in the exercise of the power and authority conferred
and vested in it as such Trustee, that each and all of the representations,
undertakings and agreements herein made on the part of the Trustee or the Owner
Lessor are intended not as personal representations, undertakings and agreements
by ________ Trust Company, or for the purpose or with the intention of binding
_______ Trust Company, personally, but are made and intended for the purpose of
binding only the Trust Estate, that nothing herein contained shall be construed
as creating any liability of __________ Trust Company, or any incorporator or
any past, present or future subscriber to the capital stock of, or stockholder,
officer or director of _______ Trust Company, to perform any covenant either
express or implied contained herein or in the other Operative Documents to which
the Trustee or the Owner Lessor is a party, and that so far as _______ Trust
Company is concerned, any Person shall look solely to the Trust Estate for the
performance of any obligation hereunder or thereunder or under any of the
instruments referred to herein or therein; PROVIDED, that nothing contained in
this SECTION shall be construed to limit in scope or substance any general
corporate liability of _______ Trust Company as expressly provided in the Trust
Agreement or in the Participation Agreement.

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     WITNESS WHEREOF, the parties hereto have caused this Subordination
Agreement to be executed by their respective officers as of the days and year
first above written.

                             [GE LLC]

                             By:
                                -----------------------------------------
                                Name:
                                Title:

                            [GE CAPITAL OWNER PARTICIPANT]

                             By:

                             By:
                                -----------------------------------------
                                Name:
                                Title:

                             [UNITED STATES TRUST COMPANY OF NEW
                             YORK], not in its individual
                             capacity, except to the extent
                             provided herein, but solely as
                             Security Agent under the Lease
                             Indenture

                             By:
                                -----------------------------------------
                                Name:
                                Title:
                                Date:<Page>

                                                                    Exhibit 4.7

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                         PLEDGE AND COLLATERAL AGREEMENT

                                     made by

                          EDISON MISSION HOLDINGS CO.,

                                   in favor of

                              THE BANK OF NEW YORK,
                                 as successor to

                    UNITED STATES TRUST COMPANY OF NEW YORK,
                               as Collateral Agent

                          Dated as of December __, 2001

===============================================================================

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                                TABLE OF CONTENTS

<Table>
<Caption>
                                                                                                              Page
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<S>                                                                                                            <C>
SECTION 1. DEFINED TERMS..........................................................................................2

         1.1      DEFINITIONS.....................................................................................2
         1.2      OTHER DEFINITIONAL PROVISIONS...................................................................3

SECTION 2. PLEDGE; GRANT OF SECURITY INTEREST.....................................................................3

SECTION 3. REPRESENTATIONS AND WARRANTIES.........................................................................4
         3.1      DUE ORGANIZATION................................................................................4
         3.2      DUE AUTHORIZATION; ENFORCEABILITY, ETC..........................................................5
         3.3      NON-CONTRAVENTION...............................................................................5
         3.4      CONSENTS........................................................................................5
         3.5      LITIGATION......................................................................................5
         3.6      DEFENSES........................................................................................5
         3.7      REGULATIONS.....................................................................................6
         3.8      OTHER CONTRACTS.................................................................................6
         3.9      TITLE; NO OTHER LIENS...........................................................................6
         3.10     PERFECTED FIRST PRIORITY LIENS..................................................................6
         3.11     CHIEF EXECUTIVE OFFICE..........................................................................6
         3.12     INVESTMENT PROPERTY.............................................................................6

SECTION 4. COVENANTS..............................................................................................6
         4.1      MAINTENANCE OF EXISTENCE........................................................................7
         4.2      PAYMENT OF TAXES................................................................................7
         4.3      BANKRUPTCY......................................................................................7
         4.4      DELIVERY OF CERTIFICATED SECURITIES.............................................................7
         4.5      MAINTENANCE OF PERFECTED SECURITY INTEREST FURTHER DOCUMENTATION................................7
         4.6      CHANGES IN LOCATIONS, NAME, ETC.................................................................8
         4.7      NOTICES.........................................................................................8
         4.8      INVESTMENT PROPERTY.............................................................................8

SECTION 5. REMEDIAL PROVISIONS....................................................................................9
         5.1      INVESTMENT  PROPERTY............................................................................9
         5.2      PROCEEDS TO BE TURNED OVER TO COLLATERAL AGENT.................................................10
         5.3      DEPOSITS; APPLICATION OF PROCEEDS..............................................................10
         5.4      CODE AND OTHER REMEDIES........................................................................11
         5.5      PLEDGED SHARES.................................................................................11
         5.8      WAIVER; DEFICIENCY.............................................................................12

SECTION 6. THE COLLATERAL AGENT..................................................................................12
         6.1      COLLATERAL AGENT'S APPOINTMENT AS ATTORNEY-IN-FACT, ETC........................................12
         6.2      DUTY OF COLLATERAL AGENT.......................................................................14
         6.3      EXECUTION OF FINANCING STATEMENTS..............................................................14
         6.4      AUTHORITY OF COLLATERAL AGENT..................................................................14

SECTION 7. MISCELLANEOUS.........................................................................................15

                                       i

<Page>

         7.1      AMENDMENTS IN WRITING..........................................................................15
         7.2      NOTICES........................................................................................15
         7.3      NO WAIVER BY COURSE OF CONDUCT; CUMULATIVE REMEDIES............................................15
         7.4      SUCCESSORS AND ASSIGNS.........................................................................15
         7.5      SET-OFF........................................................................................15
         7.6      COUNTERPARTS...................................................................................16
         7.7      SEVERABILITY...................................................................................16
         7.8      SECTION HEADINGS...............................................................................16
         7.9      INTEGRATION....................................................................................16
         7.10     GOVERNING LAW..................................................................................17
         7.11     SUBMISSION TO JURISDICTION; WAIVERS............................................................17
         7.12     ACKNOWLEDGMENTS.  THE PLEDGOR HEREBY ACKNOWLEDGES THAT:........................................17
         7.13     RELEASES.......................................................................................17
         7.14     CONTINUING ASSIGNMENT; PLEDGE AND SECURITY INTEREST; RELEASE...................................18
         7.15     EXPENSES.......................................................................................18
         7.16     WAIVER OF JURY TRIAL...........................................................................21

SCHEDULES

Schedule 1........Notice Addresses
Schedule 2........Investment Property
Schedule 3........Perfection Matters
Schedule 4........Jurisdictions of Organization and Chief Executive Offices
</Table>

                                       ii

<Page>

     PLEDGE AND COLLATERAL AGREEMENT, dated as of December __, 2001, made by
EDISON MISSION HOLDINGS CO., a California corporation ( "EDISON MISSION
HOLDINGS," the " PLEDGOR") in favor of The Bank of New York, as successor to
UNITED STATES TRUST COMPANY OF NEW YORK, as Collateral Agent for the Secured
Parties (as defined below) (in such capacity, the "COLLATERAL AGENT").

                                    RECITALS

     A. Contemporaneously herewith, EME Homer City Generation, L.P., a
Pennsylvania limited partnership ("EME HOMER CITY") will enter into a
transaction pursuant to the Participation Agreements listed on SCHEDULE 1 (as
amended, modified and supplemented and in effect from time to time,
collectively, the "PARTICIPATION AGREEMENTS") whereby EME Homer City will sell
the undivided interests in its generating assets to the Owner Lessor and the
Owner Lessor will lease such undivided interests in the generating assets to EME
Homer City under the Facility Lease.

     B. In consideration of the transactions contemplated by each of the
Participation Agreements, EME Homer City will be obligated to pay to the Secured
Parties the aggregate amount of all obligations owed by EME Homer City to the
Secured Parties under the Operative Documents (the "LEVERAGED LEASE
OBLIGATIONS").

     C. In satisfaction of the requirements of the Secured Parties, the Pledgors
desire by this Agreement and the other Security Documents (as defined below) to
provide collateral as security for EME Homer City's obligations under
Participation Agreements and the other Operative Documents (as defined below).

     D. In order to simplify administration of such collateral and to provide
for the orderly enforcement of their respective rights, the Secured Parties (as
defined below) have appointed the Collateral Agent to serve as their common
representative, to be the beneficiary under any pledge intended to benefit the
Secured Parties, and to hold the liens created, or to be created, under the
Operative Documents.

     E. EME Homer City is a member of an affiliated group of companies that
includes the Pledgor. The Pledgor will derive substantial direct and indirect
benefit from the sale-leaseback transaction.

     F. It is a condition precedent to the approval by the Secured Parties of
the transactions contemplated by the Operative Documents that the Pledgor shall
have executed and delivered this Agreement to the Collateral Agent for the
benefit of the Secured Parties.

     NOW, THEREFORE, in consideration of the premises, the Pledgor hereby agrees
with the Collateral Agent, for the benefit of the Secured Parties, as follows:

<Page>

                            SECTION 1. DEFINED TERMS

     1.1 DEFINITIONS. (a) Unless otherwise defined herein, terms defined in each
Participation Agreement and used herein shall have the
meanings given to them in each Participation Agreement.

     (b) The following terms shall have the following meanings:

     "AGREEMENT": this Pledge and Collateral Agreement, as the same may be
amended, supplemented or otherwise modified from time to time.

     "CAPITAL STOCK": any and all shares, interests, participations or other
equivalents (however designated) of capital stock of a corporation, any and all
equivalent ownership interests in a Person (other than a corporation) and any
and all warrants, rights or options to purchase any of the foregoing.

     "CERTIFICATED SECURITY": the collective reference to (i) any "certificated
security" as defined in Section 8-102 of the New York UCC and (ii) all limited
liability company certificates, partnership interest certificates and
certificated options therefor that may be issued or granted by any Issuer.

     "COLLATERAL": as defined in Section 2(a).

     "COLLATERAL ACCOUNT": any collateral account established by the Collateral
Agent as provided in SECTION 5.2.

     "FACILITY LEASE": as defined in each Participation Agreement.

     "INVESTMENT PROPERTY": the collective reference to (i) all "investment
property" as such term is defined in Section 9-115 of the New York UCC and (ii)
whether or not constituting "investment property" as so defined, all Pledged
Shares.

     "ISSUERS": MEW as issuer of the Investment Property.

     "LEASE EVENT OF DEFAULT": as defined in each Participation Agreement.

     "LEASE INDENTURE TRUSTEE": as defined in each Participation Agreement.

     "MEW": Mission Energy Westside, Inc., a California corporation.

     "NEW YORK UCC": the Uniform Commercial Code as from time to time in effect
in the State of New York.

     "PERSON": any natural person, corporation, partnership, limited liability
company, firm, association, trust, government, governmental agency or other
entity, whether acting in an individual, fiduciary or other capacity.

     "PLEDGED SHARES": the shares of Capital Stock of MEW, together with any
other shares, stock certificates, options or rights of any nature whatsoever in
respect of the Capital

                                       2
<Page>

Stock of MEW that may be issued or granted to, or held by, the Pledgor while
this Agreement is in effect.

     "PROCEEDS": all "proceeds" as such term is defined in Section 9-306(1) of
the New York UCC and, in any event, shall include all dividends or other income
from the Investment Property, collections thereon or distributions or payments
with respect thereto.

     "SECURED PARTIES": the Collateral Agent, the Owner Lessors and the Owner
Participant.

     "SECURITIES ACT": the Securities Act of 1933, as amended.

     1.2 OTHER DEFINITIONAL PROVISIONS. (a) The words "hereof", "herein" and
"hereunder" and words of similar import when used in this Agreement shall refer
to this Agreement as a whole and not to any particular provision of this
Agreement, and section, schedule, appendix and exhibit references are to this
Agreement unless otherwise specified.

     (b) Each reference in this Agreement to an Operative Document or other
agreement shall be deemed to refer to such Operative Document or other agreement
as the same may be amended, supplemented or otherwise modified from time to
time.

     (c) Any term defined by reference to an agreement, instrument or other
document shall have the meaning so assigned to it whether or not such agreement,
instrument or document is in effect.

     (d) Each reference in this Agreement to a Person shall be deemed to include
such Person's successors and assigns.

     (e) Each reference in this Agreement to a Requirement of Law shall be
deemed to refer to such Requirement of Law as the same may be amended,
supplemented or otherwise modified from time to time.

     (f) The meanings given to terms defined herein shall be equally applicable
to both the singular and plural forms of such terms.

                 SECTION 2. PLEDGE; GRANT OF SECURITY INTEREST

     (a) As collateral security for the prompt and complete payment and
performance when due (whether at stated maturity, by acceleration or otherwise)
by EME Homer City of all EME Homer City's Leveraged Lease Obligations, the
Pledgor hereby pledges and grants to the Collateral Agent for the benefit of the
Secured Parties a pledge of and a first priority continuing security interest
in, all of the Pledgor's right, title and interest in, to and under the
following property, whether now owned by the Pledgor or hereafter acquired and
whether now existing or hereafter coming into existence (all being collectively
referred to herein as the "COLLATERAL"):

          (1) all shares of capital stock of MEW (the "PLEDGED SHARES"), the
     certificates representing the Pledged Shares, and all cash dividends,

                                       3
<Page>

     stock dividends, cash, instruments, chattel paper, warrants, options and
     other rights, property or proceeds and products from time to time received,
     receivable or otherwise distributed in respect of or in exchange for any or
     all of the Pledged Shares now or hereafter owned by the Pledgor;

          (2) additional shares of capital stock of MEW at any time acquired by
     the Pledgor whether by stock split, stock dividend, transfer, new issuance
     or any other manner (any such additional shares or membership interests
     shall constitute part of the Pledged Shares) whether voting or non-voting,
     and all securities convertible into and warrants, options and other rights
     to acquire any shares of capital stock of MEW, and the certificates or
     other instruments representing such additional shares, warrants, options or
     rights, and all cash dividends, stock dividends, cash, instruments, chattel
     paper, and any other rights, property or proceeds and products from time to
     time received, receivable or otherwise distributed in respect of or in
     exchange for any or all of the foregoing;

          (3) all other claims of any kind or nature, and any instruments,
     certificates, chattel paper or other writings evidencing such claims,
     whether in contract or tort and whether arising by operation of law,
     consensual agreement or otherwise, at any time acquired by Pledgor in
     respect of any or all of the foregoing against MEW;

          (4) all books and records relating to any of the foregoing;

          (5) all interests in substitution for or in addition to any of the
     foregoing, any certificates representing or evidencing such interests, and
     all cash, securities, distributions and other property at any time and from
     time to time received, receivable or otherwise distributed in respect of or
     in exchange for any or all of the foregoing; and

          (6) all proceeds of and to any of the property of the Pledgor
     described in the preceding clauses of this Section.

                   SECTION 3. REPRESENTATIONS AND WARRANTIES

     The Pledgor hereby represents and warrants, with respect to itself and its
Collateral, to the Collateral Agent and each Secured Party that:

     3.1 DUE ORGANIZATION. The Pledgor (i) is duly organized, validly existing
and in good standing under the law of the jurisdiction of its formation, and has
the capacity and power to enter into this Agreement, to perform its obligations
hereunder and thereunder and to consummate the transactions contemplated hereby
and thereby, (ii) is duly qualified to do business and in good standing in each
other jurisdiction where the character of its properties or the nature of its
activities makes such qualification necessary, (iii) has the requisite power to
own its Collateral, and (iv) possesses all Governmental Approvals required for
its ownership of its Collateral.

                                       4
<Page>

     3.2 DUE AUTHORIZATION; ENFORCEABILITY, ETC. The Pledgor has taken all
necessary corporate or other action, as the case may be, to authorize the
transactions contemplated by this Agreement. This Agreement has been duly
executed and delivered by the Pledgor and constitutes the legal, valid and
binding obligations of the Pledgor enforceable in accordance with its terms,
(except as the enforceability thereof may be limited by bankruptcy, insolvency,
reorganization or other laws affecting the enforcement of creditors' rights
generally and general equitable principles).

     3.3 NON-CONTRAVENTION. Neither the execution and delivery of this Agreement
nor compliance with any of the terms and provisions hereof (i) contravenes any
Requirement of Law, binding on or affecting the Pledgor, any law, order, writ,
judgment, injunction, decree, determination, or award applicable to the Pledgor
or Governmental Approvals applicable to the Pledgor or any of its respective
properties or other assets, except where such contravention could not reasonably
be expected to have a Material Adverse Effect, (ii) conflicts with, breaches or
contravenes the provisions of the organizational documents of the Pledgor or
under any mortgage, indenture or other contract, agreement or instrument to
which the Pledgor is a party or by which the Pledgor or its property is bound,
or (iii) results in the creation or imposition of any Liens (other than those
created hereunder) upon any of the property or assets of the Pledgor under, or
in a condition or event that constitutes (or that, upon notice or lapse of time
or both, would constitute) an event of default with respect to any contractual
obligations of the Pledgor.

     3.4 CONSENTS. Except for the actions contemplated herein or in Section 4.6
of the Participation Agreement, no consent of any other Person and no
authorization, approval, or other action by, and no notice to or filing with,
any Person or Governmental Authority is required (i) for the pledge of the
Collateral by the Pledgor pursuant to this Agreement, (ii) for the execution,
delivery or performance of this Agreement by the Pledgor, (iii) for the
perfection or maintenance of the security interest created hereby (including the
first priority nature of such security interest) or (iv) for the exercise by the
Owner Lessor, the Owner Participant, or so long as the Lien of the Lease
Indenture has not been discharged or released, the Security Agent, of the voting
or other rights provided for in this Agreement or the remedies in respect of
such Collateral pursuant to this Agreement or as provided by any Requirement of
Law, except those which have been duly obtained or made and, in the case of
maintenance of perfection, the filing of continuation statements under the
Uniform Commercial Code.

     3.5 LITIGATION. There are no actions, suits or proceedings at law or in
equity by or before any Governmental Authority now pending or, to the Pledgor's
Actual Knowledge, threatened against or affecting the Pledgor or any of its
properties or rights which could reasonably be expected to have a Material
Adverse Affect on the right or ability of the Pledgor to fulfill its obligations
hereunder, or which questions or challenges the validity of this Agreement or
any of the transactions contemplated hereby.

     3.6 DEFENSES. To the Actual Knowledge of the Pledgor, no Pledged Shares
pledged hereunder are subject to any defense, offset or counterclaim, nor have
any of the foregoing been asserted or alleged against the Pledgor by any Person.
As of the Closing Date, there are no certificates, instruments, documents or
other writings of MEW which evidence any Pledged Shares other than the stock
certificate evidencing the Pledged Shares (the "STOCK

                                       5
<Page>

CERTIFICATE") the original of which has been delivered to the Lease Indenture
Trustee at the Closing.

     3.7 REGULATIONS. None of the Collateral pledged hereunder constitutes
margin stock, as defined in Regulation T, U and X of the Board of Governors of
the Federal Reserve System or any regulations substituted therefor, as from time
to time in effect, are used in this Section 3 without meaning.

     3.8 OTHER CONTRACTS. The Pledgor is not a party to any outstanding
agreement, option or contract to sell all or any portion of the Collateral. No
part of the Collateral is subject to the terms of any agreement restricting the
sale or transfer of such Collateral. No Person has any right to purchase or
terminate any or all of the interests of the Pledgor in the Collateral, except
pursuant to the terms of this Agreement.

     3.9 TITLE; NO OTHER LIENS. Except for the security interest granted to the
Collateral Agent pursuant to this Agreement, the Pledgor owns each item of the
Collateral free and clear of any and all Liens or claims of others. No financing
statement or other public notice with respect to all or any part of the
Collateral is on file or of record in any public office, except such as have
been filed in favor of the Collateral Agent pursuant to this Agreement or as are
permitted by the Operative Documents.

     3.10 PERFECTED FIRST PRIORITY LIENS. The security interests granted
pursuant to this Agreement upon completion of the filings and other actions
specified on SCHEDULE 3 (which, in the case of all filings and other documents
referred to on said SCHEDULE, have been delivered to the Collateral Agent in
completed and duly executed form) will (a) constitute valid and enforceable
perfected security interests in all of the Collateral in favor of the Collateral
Agent as collateral security for EME Homer City's Leveraged Lease Obligations to
the extent that a security interest may be perfected by filing and/or the other
actions specified on SCHEDULE 3, and (b) are prior to all other Liens on the
Collateral in existence on the date hereof except for Liens permitted by the
Operative Documents and which have priority over the Liens on the Collateral by
operation of law.

     3.11 CHIEF EXECUTIVE OFFICE. On the date hereof, the Pledgor's jurisdiction
of organization and the location of the Pledgor's chief executive office or sole
place of business are specified on SCHEDULE 4.

     3.12 INVESTMENT PROPERTY. (a) The shares of Pledged Shares pledged by the
Pledgor hereunder constitute all the issued and outstanding shares of all
classes of the Capital Stock of the Issuer owned by the Pledgor.

     (b) All the shares of the Pledged Shares have been duly and validly issued
and are fully paid and nonassessable.

     (c) The Pledgor is the record and beneficial owner of, and has good and
marketable title to, the Collateral pledged by it hereunder, free of any and all
Liens or options in favor of, or claims of, any other Person, except the
security interest created by this Agreement.

                              SECTION 4. COVENANTS

                                       6
<Page>

     The Pledgor covenants and agrees with the Collateral Agent and the Secured
Parties that, from and after the date of this Agreement until the Leveraged
Lease Obligations shall have been paid in full:

     4.1 MAINTENANCE OF EXISTENCE. The Pledgor shall preserve and maintain its
corporate existence and all of its rights, privileges and franchises that are
necessary for the fulfillment of its obligations under this Agreement.

     4.2 PAYMENT OF TAXES. The Pledgor shall pay, before any fine, penalty,
interest or cost attaches thereto, all taxes, assessments and other governmental
or non-governmental charges or levies now or hereafter assessed or levied
against the Collateral or upon the Liens provided for herein provided that no
such tax, assessment, governmental charge or levy need be paid if being
contested in good faith by appropriate actions promptly initiated and diligently
conducted and if (i) adequate reserves consistent with GAAP requirements (or
other security arrangements reasonably satisfactory to the Lenders and the Owner
Participant) are established and maintained in an amount sufficient to pay any
such taxes, assessments or other charges, accrued interest thereon and potential
penalties or other costs relating thereto, or other adequate provision for the
payment thereof shall have been made, and (ii) any tax, assessment or other
charge determined to be due, together with any interest or penalties thereon, is
immediately paid after resolution of such contest.

     4.3 BANKRUPTCY. The Pledgor shall not authorize, seek to cause or permit
MEW to commence a voluntary case or other proceeding seeking liquidation,
reorganization or other relief with respect to MEW or its respective debts under
any bankruptcy, insolvency or other similar law now or hereafter in effect or
seeking the appointment of a trustee, receiver, liquidator, custodian or other
similar official of it or any substantial part of its property or to consent to
any such relief or to the appointment of or taking possession by any such
official in an involuntary case or other proceeding commenced against it, or to
make a general assignment for the benefit of creditors.

     4.4 DELIVERY OF CERTIFICATED SECURITIES. If any amount payable under or in
connection with any of the Collateral shall be or become evidenced by any
Certificated Security, such Certificated Security shall be immediately delivered
to the Collateral Agent, duly indorsed in a manner satisfactory to the
Collateral Agent, to be held as Collateral pursuant to this Agreement.

     4.5 MAINTENANCE OF PERFECTED SECURITY INTEREST FURTHER DOCUMENTATION. (a)
The Pledgor shall take any and all actions that may be necessary or, in the
reasonable discretion of the Collateral Agent, prudent to maintain the security
interest created by this Agreement as a perfected security interest having at
least the priority described in Section 3.2 and shall defend such security
interest against the claims and demands of all Persons whomsoever.

     (b) At any time and from time to time, upon the written request of the
Collateral Agent, and at the sole expense of the Pledgor, the Pledgor will
promptly and duly execute and deliver, and have recorded, such further
instruments and documents and take such further actions as the Collateral Agent
may reasonably request for the purpose of obtaining or preserving the full
benefits of this Agreement and of the rights and powers herein granted,

                                       7
<Page>

including (i) filing any financing or continuation statements under the Uniform
Commercial Code (or other similar laws) in effect in any jurisdiction with
respect to the security interests created hereby and (ii) in the case of
Investment Property, and any other relevant Collateral, taking any actions
necessary to enable the Collateral Agent to obtain "control" (within the meaning
of the applicable Uniform Commercial Code) with respect thereto

     4.6 CHANGES IN LOCATIONS, NAME, ETC. The Pledgor will not, except upon 30
days' prior written notice to the Collateral Agent and delivery to the
Collateral Agent of all additional executed financing statements and other
documents reasonably requested by the Collateral Agent to maintain the validity,
perfection and priority of the security interests provided for herein:

          (i) change its jurisdiction of organization or the location of its
     chief executive office or sole place of business from that referred to in
     SECTION 3.3; or

          (ii) change its name, identity or corporate structure to such an
     extent that any financing statement filed by the Collateral Agent in
     connection with this Agreement would become misleading.

     4.7 NOTICES. The Pledgor will advise the Collateral Agent promptly, in
reasonable detail, of:

     (a) any Lien (other than security interests created hereby or Liens
permitted under the Operative Documents) on any of the Collateral which could
reasonably be expected to have a material adverse effect on the ability of the
Collateral Agent to exercise any of its remedies hereunder; and

     (b) of the occurrence of any other event which could reasonably be expected
to have a material adverse effect on the aggregate value of the Collateral or on
the security interests created hereby.

     4.8 INVESTMENT PROPERTY. (a) If the Pledgor shall become entitled to
receive or shall receive any certificate (including any certificate representing
a stock dividend or a distribution in connection with any reclassification,
increase or reduction of capital or any certificate issued in connection with
any reorganization), option or rights in respect of the capital stock in the
Issuer, whether in addition to, in substitution of, as a conversion of, or in
exchange for, any of the Pledged Shares, as the case may be, or otherwise in
respect thereof, the Pledgor shall accept the same as the agent of the
Collateral Agent and the Secured Parties, hold the same in trust for the
Collateral Agent and the Secured Parties and deliver the same forthwith to the
Collateral Agent in the exact form received, duly indorsed by the Pledgor to the
Collateral Agent, if required, together with an undated stock power or power of
transfer, as the case may be, covering such certificate duly executed in blank
by the Pledgor and with, if the Collateral Agent so requests, signature
guaranteed, to be held by the Collateral Agent, subject to the terms hereof as
additional collateral

                                       8
<Page>

security for the Leveraged Lease Obligations. Any sums paid upon or in respect
of the Investment Property upon the liquidation or dissolution of the Issuer
shall be paid over to the Collateral Agent to be held by it hereunder as
additional collateral security for the Leveraged Lease Obligations, and in case
any distribution of capital shall be made on or in respect of the Investment
Property or any property shall be distributed upon or with respect to the
Investment Property pursuant to the recapitalization or reclassification of the
capital of the Issuer or pursuant to the reorganization thereof, the property so
distributed shall, unless otherwise subject to a perfected security interest in
favor of the Collateral Agent, be delivered to the Collateral Agent to be held
by it hereunder as additional collateral security for the Leveraged Lease
Obligations. If any sums of money or property so paid or distributed in respect
of the Investment Property shall be received by the Pledgor, the Pledgor shall,
until such money or property is paid or delivered to the Collateral Agent, hold
such money or property in trust for the Secured Parties, segregated from other
funds of the Pledgor, as additional collateral security for the Leveraged Lease
Obligations.

     (b) Without the prior written consent of the Collateral Agent, the Pledgor
will not (i) vote to enable, or take any other action to permit, any Issuer to
issue any stock, partnership interests or other equity securities of any nature
or to issue any other securities convertible into or granting the right to
purchase or exchange for any stock or other equity securities of any nature of
the Issuer, (ii) sell, assign, transfer, exchange, or otherwise dispose of, or
grant any option with respect to, any Collateral, except pursuant to a
transaction expressly permitted by each Participation Agreement, (iii) create,
incur or permit to exist any Lien or option in favor of or any claim of any
Person with respect to, any of the Collateral, or any interest therein, except
for the security interests created by this Agreement or (iv) enter into any
agreement or undertaking restricting the right or ability of the Pledgor or the
Collateral Agent to sell, assign or transfer any of the Collateral.

     (c) MEW hereby agrees that (i) it will be bound by the terms of this
Agreement relating to the Investment Property issued by it and will comply with
such terms insofar as such terms are applicable to it, (ii) it will notify the
Collateral Agent promptly in writing of the occurrence of any of the events
described in SECTION 4.5(a) with respect to the Investment Property issued by it
and (iii) the terms of SECTION 5.1(b) shall apply to it, MUTATIS MUTANDIS, with
respect to all actions that may be required of it pursuant to SECTION 5.1(b)
with respect to the Investment Property issued by it.

                         SECTION 5. REMEDIAL PROVISIONS

     5.1 INVESTMENT PROPERTY. (a) Unless a Lease Event of Default shall have
occurred and be continuing and the Collateral Agent shall have given notice to
the Pledgor of the Collateral Agent's intent to exercise its corresponding
rights pursuant to SECTION 5.1(b), the Pledgor shall be permitted to receive all
cash dividends paid in respect of the Pledged Shares, to the extent permitted in
the Participation Agreement, and to exercise all voting and corporate rights
with respect to the Investment Property; PROVIDED, HOWEVER, that no vote shall
be cast or corporate right exercised or other action taken which, in the
Collateral Agent's reasonable judgment, would impair the Collateral or which
would be inconsistent with or result in any violation of any provision of any
Operative Document.

     (b) If a Lease Event of Default shall occur and be continuing and the
Collateral Agent shall give notice of its intent to exercise such rights to the
Pledgor, (i) the Collateral Agent shall have the right to receive any and all
cash dividends, distributions,

                                       9
<Page>

payments or other Proceeds paid in respect of the Investment Property and make
application thereof to the Leveraged Lease Obligations in such order as the
Collateral Agent may determine, and (ii) any or all of the Investment Property
shall be registered in the name of the Collateral Agent or its nominee, and the
Collateral Agent or its nominee may thereafter exercise (x) all voting,
corporate and other rights pertaining to such Investment Property at any meeting
of shareholders or partners of the Issuer or otherwise and (y) any and all
rights of conversion, exchange and subscription and any other rights, privileges
or options pertaining to such Investment Property as if it were the absolute
owner thereof (including, without limitation, the right to exchange at its
discretion any and all of the Investment Property upon the merger,
consolidation, reorganization, recapitalization or other fundamental change in
the corporate or partnership structure of any Issuer, or upon the exercise by
the Pledgor or the Collateral Agent of any right, privilege or option pertaining
to such Investment Property, and in connection therewith, the right to deposit
and deliver any and all of the Investment Property with any committee,
depositary, transfer agent, registrar or other designated agency upon such terms
and conditions as the Collateral Agent may determine), all without liability
except to account for property actually received by it, but the Collateral Agent
shall have no duty to the Pledgor to exercise any such right, privilege or
option and shall not be responsible for any failure to do so or delay in so
doing.

     5.2 PROCEEDS TO BE TURNED OVER TO COLLATERAL AGENT. If a Lease Event of
Default shall occur and be continuing, all Proceeds received by the Pledgor
consisting of cash, checks and other near-cash items shall be held by the
Pledgor in trust for the Collateral Agent, segregated from other funds of the
Pledgor, and shall, forthwith upon receipt by the Pledgor, be turned over to the
Collateral Agent in the exact form received by the Pledgor (duly indorsed by the
Pledgor to the Collateral Agent, if required). All Proceeds received by the
Collateral Agent hereunder shall be held by the Collateral Agent in the
Collateral Account maintained under its sole dominion and control. All Proceeds
while held by the Collateral Agent in the Collateral Account (or by the Pledgor
in trust for the Collateral Agent and the Secured Parties) shall continue to be
held as collateral security for all the Leveraged Lease Obligations and shall
not constitute payment thereof until applied as provided in SECTION 5.3.

     5.3 DEPOSITS; APPLICATION OF PROCEEDS. Upon the creation of any Collateral
Account, the Collateral Agent shall also establish 8 subaccounts of such
Collateral Account, one subaccount with respect to each Facility Lease. All
deposits into the Collateral Account shall be credited to each subaccount based
upon such Owner Lessor's Percentage of such deposited amount. If a Lease Event
of Default under a Participation Agreement shall have occurred and be
continuing, at any time thereafter at the Collateral Agent's election, the
Collateral Agent may apply all or any part of Proceeds held in the applicable
subaccount of the Collateral Account in payment of the applicable Leveraged
Lease Obligations, and any part of such funds which the Collateral Agent elects
not so to apply and deems not required as collateral security for any Leveraged
Lease Obligations shall be paid over from time to time by the Collateral Agent
to the Pledgor or to whomsoever may be lawfully entitled to receive the same.
Any balance of such Proceeds in a subaccount remaining after applicable
Leveraged Lease Obligations shall have been paid in full shall be paid over to
the Pledgor or to whomsoever may be lawfully entitled to receive the same. It is
acknowledged and agreed that sums on deposit in any subaccount of the Collateral
Account shall be held for the benefit of the applicable Owner Lessor (as
collateral for the Leveraged Lease Obligations under the applicable Facility
Lease and the applicable

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Operative Documents and shall not constitute collateral for, and shall not be
applied to the repayment of, any obligations of the Facility Lessee owing to any
other Owner Lessor under any other Facility Lease (or applicable Operative
Documents).

     5.4 CODE AND OTHER REMEDIES. Subject to Article XIV of the Participation
Agreement, if a Lease Event of Default shall occur and be continuing, the
Collateral Agent, on behalf of the Secured Parties, may exercise, in addition to
all other rights and remedies granted to them in this Agreement and in any other
instrument or agreement securing, evidencing or relating to the Leveraged Lease
Obligations, all rights and remedies of a secured party under the New York UCC
or any other applicable law. Without limiting the generality of the foregoing,
the Collateral Agent, without demand of performance or other demand,
presentment, protest, advertisement or notice of any kind (except any notice
required by law referred to below) to or upon the Pledgor or any other Person
(all and each of which demands, defenses, advertisements and notices are hereby
waived), may in such circumstances forthwith collect, receive, appropriate and
realize upon the Collateral, or any part thereof, and/or may forthwith sell,
lease, assign, give option or options to purchase, or otherwise dispose of and
deliver the Collateral or any part thereof (or contract to do any of the
foregoing), in one or more parcels at public or private sale or sales, at any
exchange, broker's board or office of the Collateral Agent or any Secured Party
or elsewhere upon such terms and conditions as it may deem advisable and at such
prices as it may deem best, for cash or on credit or for future delivery without
assumption of any credit risk. The Collateral Agent or any Secured Party shall
have the right upon any such public sale or sales, and, to the extent permitted
by law, upon any such private sale or sales, to purchase the whole or any part
of the Collateral so sold, free of any right or equity of redemption in the
Pledgor, which right or equity is hereby waived and released. The Pledgor
further agrees, at the Collateral Agent's request, to assemble the Collateral
and make it available to the Collateral Agent at places which the Collateral
Agent shall reasonably select, whether at the Pledgor's premises or elsewhere.
The Collateral Agent shall apply the net proceeds of any action taken by it
pursuant to this SECTION 5.4, after deducting all reasonable costs and expenses
of every kind incurred in connection therewith or incidental to the care or
safekeeping of any of the Collateral or in any way relating to the Collateral or
the rights of the Collateral Agent and the Secured Parties hereunder, including,
without limitation, reasonable attorneys' fees and disbursements, to the payment
in whole or in part of the Leveraged Lease Obligations, in such order as the
Collateral Agent may elect, and only after such application and after the
payment by the Collateral Agent of any other amount required by any provision of
law, including, without limitation, Section 9-504(l)(c) of the New York UCC,
need the Collateral Agent account for the surplus, if any, to the Pledgor. To
the extent permitted by applicable law, the Pledgor waives all claims, damages
and demands it may acquire against the Collateral Agent or any Secured Party
arising out of the exercise by them of any rights hereunder. If any notice of a
proposed sale or other disposition of Collateral shall be required by law, such
notice shall be deemed reasonable and proper if given at least 10 days before
such sale or other disposition.

     5.5 PLEDGED SHARES. (a) The Pledgor recognizes that the Collateral Agent
may be compelled to resort to one or more private sales of the Pledged Shares to
a restricted group of purchasers which will be obliged to agree, among other
things, to acquire such securities for their own account for investment and not
with a view to the distribution or resale thereof. The Pledgor acknowledges and
agrees that any such private sale may result in prices and other terms less
favorable than if such sale were a public sale and, notwithstanding such

                                       11
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circumstances, agrees that any such private sale shall be deemed to have been
made in a commercially reasonable manner. The Collateral Agent shall be under no
obligation to delay a sale of any of the Pledged Shares, as the case may be, for
the period of time necessary to permit the Issuer thereof to register such
securities for public sale under the Securities Act, or under applicable state
securities laws, even if the Issuer would agree to do so.

     (b) The Pledgor agrees to use its best efforts to do or cause to be done
all such other acts as may be necessary to make such sale or sales of all or any
portion of the Pledged Shares, as the case may be, pursuant to this SECTION 5.5,
valid and binding and in compliance with any and all other applicable
Requirements of Law. The Pledgor further agrees that a breach of any of the
covenants contained in this SECTION 5.5 will cause irreparable injury to the
Collateral Agent and the Secured Parties, that the Collateral Agent and the
Secured Parties have no adequate remedy at law in respect of such breach and, as
a consequence, that each and every covenant contained in this SECTION 5.5 shall
be specifically enforceable against the Pledgor, and the Pledgor hereby waives
and agrees not to assert any defenses against an action for specific performance
of such covenants except for a defense that no Lease Event of Default has
occurred.

     5.7 DIRECTION OF SECURED PARTIES. As provided in the Ownership and
Operating Agreement, the Majority in Interest (defined in the Ownership and
Operating Agreement) of Owner Lessors shall be entitled to give and refrain from
giving consents and directions to the Collateral Agent on behalf of all the
Secured Parties (and all Secured Parties shall be bound by such action).

     5.8 WAIVER; DEFICIENCY. The Pledgor waives and agrees not to assert any
rights or privileges which it may acquire under Section 9-112 of the New York
UCC.

                        SECTION 6. THE COLLATERAL AGENT

     6.1 COLLATERAL AGENT'S APPOINTMENT AS ATTORNEY-IN-FACT, ETC. (a) The
Pledgor hereby irrevocably constitutes and appoints the Collateral Agent and any
officer or agent thereof, with full power of substitution, as its true and
lawful attorney-in-fact with full irrevocable power and authority in the place
and stead of the Pledgor and in the name of the Pledgor or in its own name, for
the purpose of carrying out the terms of this Agreement, to take any and all
appropriate action and to execute any and all documents and instruments which
may be necessary or desirable to accomplish the purposes of this Agreement, and,
without limiting the generality of the foregoing, the Pledgor hereby gives the
Collateral Agent the power and right, on behalf of the Pledgor, without notice
to or assent by the Pledgor, to do any or all of the following:

          (i) in the name of the Pledgor or its own name, or otherwise, file any
     claim or take any other action or proceeding in any court of law or equity
     or otherwise deemed appropriate by the Collateral Agent for the purpose of
     collecting any and all such moneys due with respect to any other Collateral
     whenever payable;

         (ii) pay or discharge taxes and Liens levied or placed on or
     threatened against the Collateral, effect any repairs or any insurance
     called

                                       12
<Page>

     for by the terms of this Agreement and pay all or any part of the premiums
     therefor and the costs thereof,

        (iii) execute, in connection with any sale provided for in SECTION 5.5
     or 5.6, any indorsements, assignments or other instruments of conveyance or
     transfer with respect to the Collateral; and

         (iv) (1) direct any party liable for any payment under any of the
     Collateral to make payment of any and all moneys due or to become due
     thereunder directly to the Collateral Agent or as the Collateral Agent
     shall direct; (2) ask or demand for, collect, and receive payment of and
     receipt for, any and all moneys, claims and other amounts due or to become
     due at any time in respect of or arising out of any Collateral; (3)
     commence and prosecute any suits, actions or proceedings at law or in
     equity in any court of competent jurisdiction to collect the Collateral or
     any portion thereof and to enforce any other right in respect of any
     Collateral; (4) defend any suit, action or proceeding brought against the
     Pledgor with respect to any Collateral; (5) settle, compromise or adjust
     any such suit, action or proceeding and, in connection therewith, give such
     discharges or releases as the Collateral Agent may deem appropriate; and
     (6) generally, sell, transfer, pledge and make any agreement with respect
     to or otherwise deal with any of the Collateral as fully and completely as
     though the Collateral Agent were the absolute owner thereof for all
     purposes, and do, at the Collateral Agent's option and the Pledgor's
     expense, at any time, or from time to time, all acts and things which the
     Collateral Agent deems necessary to protect, preserve or realize upon the
     Collateral and the Collateral Agent's and the Secured Parties' security
     interests therein and to effect the intent of this Agreement, all as fully
     and effectively as the Pledgor might do.

     Anything in this SECTION 6.1(a) to the contrary notwithstanding, the
Collateral Agent agrees that it will not exercise any rights under the power of
attorney provided for in this SECTION 6.1(a) unless a Lease Event of Default
shall have occurred and be continuing.

     (b) If a Lease Event of Default shall have occurred and be continuing, if
the Pledgor fails to perform or comply with any of its agreements contained
herein, the Collateral Agent, at its option, but without any obligation so to
do, may perform or comply, or otherwise cause performance or compliance, with
such agreement.

     (c) The expenses of the Collateral Agent incurred in connection with
actions undertaken as provided in this SECTION 6.1, together with interest
thereon at a rate per annum equal to the highest rate per annum at which
interest would then be payable on any category of past due Rent under the
Participation Agreement, from the date of payment by the Collateral Agent to the
date reimbursed by the Pledgor, shall be payable by the Pledgor to the
Collateral Agent on demand.

                                       13
<Page>

     (d) The Pledgor hereby ratifies all that said attorneys shall lawfully do
or cause to be done by virtue hereof. All powers, authorizations and agencies
contained in this Agreement are coupled with an interest and are irrevocable
until this Agreement is terminated and the security interests created hereby are
released.

     6.2 DUTY OF COLLATERAL AGENT. The Collateral Agent's sole duty with respect
to the custody, safekeeping and physical preservation of the Collateral in its
possession, under Section 9-207 of the New York UCC or otherwise, shall be to
deal with it with the same degree of care as the Collateral Agent deals with
similar property for its own account. Neither the Collateral Agent, any Secured
Party nor any of their respective officers, directors, employees or agents shall
be liable for failure to demand, collect or realize upon any of the Collateral
or for any delay in doing so or shall be under any obligation to sell or
otherwise dispose of any Collateral upon the request of the Pledgor or any other
Person or to take any other action whatsoever with regard to the Collateral or
any part thereof. The powers conferred on the Collateral Agent and the Secured
Parties hereunder are solely to protect the Collateral Agents and the Secured
Parties' interests in the Collateral and shall not impose any duty upon the
Collateral Agent or any Secured Party to exercise any such powers. The
Collateral Agent and the Secured Parties shall be accountable only for amounts
that they actually receive as a result of the exercise of such powers, and
neither they nor any of their officers, directors, employees or agents shall be
responsible to the Pledgor for any act or failure to act hereunder, except for
(i) their own gross negligence or willful misconduct or (ii) breach of their
obligations under this Agreement.

     6.3 EXECUTION OF FINANCING STATEMENTS. Pursuant to Section 9-402 of the New
York UCC and any other applicable law, the Pledgor authorizes the Collateral
Agent to file or record financing statements and other filing or recording
documents or instruments with respect to the Collateral without the signature of
the Pledgor in such form and in such offices as the Collateral Agent determines
appropriate to perfect the security interests of the Collateral Agent under this
Agreement. A photographic or other reproduction of this Agreement shall be
sufficient as a financing statement or other filing or recording document or
instrument for filing or recording in any jurisdiction.

     6.4 AUTHORITY OF COLLATERAL AGENT. The Pledgor and each Secured Party by
accepting the benefits of this Agreement acknowledges that the rights and
responsibilities of the Collateral Agent under this Agreement with respect to
any action taken by the Collateral Agent or the exercise or non-exercise by the
Collateral Agent of any option, voting right, request, judgment or other right
or remedy provided for herein or resulting or arising out of this Agreement
shall, as between the Collateral Agent and the Secured Parties, be governed by
the Operative Documents and by such other agreements with respect thereto as may
exist from time to time among them, but, as between the Collateral Agent and the
Pledgor, the Collateral Agent shall be conclusively presumed to be acting as
agent for the Secured Parties with full and valid authority so to act or refrain
from acting, and the Pledgor shall not be under any obligation, or entitlement,
to make any inquiry respecting such authority.

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<Page>

                            SECTION 7. MISCELLANEOUS

     7.1 AMENDMENTS IN WRITING. None of the terms or provisions of this
Agreement may be waived, amended, supplemented or otherwise modified except in
writing and in accordance with the Participation Agreement.

     7.2 NOTICES. All notices and other communications to any party hereto shall
be in writing or by facsimile and addressed, delivered or transmitted to such
party at its address or facsimile number set forth on Schedule 1 or at such
other address or facsimile number as may be designated by such party in a notice
to the other parties.

     7.3 NO WAIVER BY COURSE OF CONDUCT; CUMULATIVE REMEDIES. Neither the
Collateral Agent nor any Secured Party shall by any act (except by a written
instrument pursuant to SECTION 7.1), delay, indulgence, omission or otherwise be
deemed to have waived any right or remedy hereunder or to have acquiesced in any
Lease Event of Default. No failure to exercise, nor any delay in exercising, on
the part of the Collateral Agent or any Secured Party, any right, power or
privilege hereunder shall operate as a waiver thereof. No single or partial
exercise of any right, power or privilege hereunder shall preclude any other or
further exercise thereof or the exercise of any other right, power or privilege.
A waiver by the Collateral Agent or any Secured Party of any right or remedy
hereunder on any one occasion shall not be construed as a bar to any right or
remedy which the Collateral Agent or such Secured Party would otherwise have on
any future occasion. The rights and remedies herein provided are cumulative, may
be exercised singly or concurrently and are not exclusive of any other rights or
remedies provided by law.

     7.4 SUCCESSORS AND ASSIGNS. (a) This Agreement shall be binding upon the
successors and assigns of the Pledgor and shall inure to the benefit of the
Collateral Agent and the Secured Parties and their successors and assigns;
PROVIDED that the Pledgor may not assign, transfer or delegate any of its rights
or obligations under this Agreement without the prior written consent of the
Collateral Agent.

     (b) In order to secure the Lessor Notes of each Owner Lessor, such Owner
Lessor will assign and grant a first priority security interest in favor of its
applicable Lease Indenture Trustee in and to all of such Owner Lessor's right,
title and interest in, to and under this Agreement (other than to the extent
relating to Excepted Payments and the rights to enforce and collect the same).
The Facility Lessee hereby consents to such assignment and to the creation of
such Lien and security interest and acknowledges receipt of copies of the Lease
Indenture, it being understood that such consent shall not affect any
requirement or the absence of any requirement for any consent of the Facility
Lessee under any other circumstances. Unless and until the Collateral Agent
shall have received written notice from the Lease Indenture Trustee that the
Lien of the applicable Lease Indenture has been fully discharged, the applicable
Lease Indenture Trustee shall have the right to exercise the rights of such
Owner Lessor under this Agreement (other than with respect to Excepted Payments
and the rights to enforce and collect the same) to the extent set forth in and
subject in each case to the exceptions set forth in the applicable Lease
Indenture.

     7.5 SET-OFF. The Pledgor hereby irrevocably authorizes the Collateral Agent
and each Secured Party at any time and from time to time (i) upon the occurrence
of a Lease

                                       15
<Page>

Event of Default of the kind described in Section [6.1] of the Participation
Agreement or (ii) upon the occurrence and continuance beyond the applicable
grace period, if any, of any other Lease Event of Default and with the consent
of the Secured Parties, without notice to the Pledgor, any such notice being
expressly waived by the Pledgor, to set-off and appropriate and apply any and
all deposits (general or special, time or demand, provisional or final), in any
currency, and any other credits, indebtedness or claims, in any currency, in
each case whether direct or indirect, absolute or contingent, matured or
unmatured, at any time held or owing by the Collateral Agent or such Secured
Party to or for the credit or the account of the Pledgor, or any part thereof in
such amounts as the Collateral Agent or such Secured Party may elect, against
and on account of the obligations and liabilities of the Pledgor to the
Collateral Agent or such Secured Party hereunder and claims of every nature and
description of the Collateral Agent or such Secured Party against the Pledgor,
in any currency, whether arising hereunder, under the Participation Agreement,
any other Operative Document or otherwise, as the Collateral Agent or such
Secured Party may elect, whether or not the Collateral Agent or any Secured
Party has made any demand for payment and although such obligations, liabilities
and claims may be contingent or unmatured. The Collateral Agent and each Secured
Party shall notify the Pledgor promptly of any such set-off and the application
made by the Collateral Agent or such Secured Party of the proceeds thereof,
PROVIDED that the failure to give such notice shall not affect the validity of
such set-off and application. The rights of the Collateral Agent and each
Secured Party under this SECTION 7.5 are in addition to other rights and
remedies (including, without limitation, other rights of set-off) which the
Collateral Agent or such Secured Party may have.

     7.6 COUNTERPARTS. This Agreement may be executed by one or more of the
parties to this Agreement on any number of separate counterparts (including by
telecopy), and all of said counterparts taken together shall be deemed to
constitute one and the same instrument.

     7.7 SEVERABILITY. Any provision of this Agreement which is prohibited or
unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective
to the extent of such prohibition or unenforceability without invalidating the
remaining provisions hereof, and any such prohibition or unenforceability in any
jurisdiction shall not invalidate or render unenforceable such provision in any
other jurisdiction.

     7.8 SECTION HEADINGS. The Section headings used in this Agreement are for
convenience of reference only and are not to affect the construction hereof or
be taken into consideration in the interpretation hereof.

     7.9 INTEGRATION. The Security Documents represent the agreement of the
Pledgor, the Collateral Agent and the Secured Parties with respect to the
subject matter hereof and thereof, and there are no promises, undertakings,
representations or warranties by the Collateral Agent or any Secured Party
relative to subject matter hereof and thereof not expressly set forth or
referred to in the Security Documents. The Security Documents supersede any and
all prior agreements and understandings, oral or written, relative or with
respect to the subject matter hereof, and there are no promises, undertakings,
representations or warranties by the Collateral Agent or any Secured Party
relative to the subject matter hereof not expressly set forth or referred to
herein or in the other Security Documents.

                                       16
<Page>

     7.10 GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED AND
INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.

     7.11 SUBMISSION TO JURISDICTION; WAIVERS. The Pledgor (and, with respect to
paragraph (e) below only, the Collateral Agent and each of the Secured Parties)
hereby irrevocably and unconditionally:

     (a) submits for itself and its property in any legal action or proceeding
relating to the Operative Documents to which it is a party, or for recognition
and enforcement of any judgment in respect thereof, to the non-exclusive general
jurisdiction of the Courts of the State of New York, the courts of the United
States of America for the Southern District of New York, and appellate courts
from any thereof;

     (b) consents that any such action or proceeding may be brought in such
courts and waives any objection that it may now or hereafter have to the venue
of any such action or proceeding in any such court or that such action or
proceeding was brought in an inconvenient court and agrees not to plead or claim
the same;

     (c) agrees that service of process in any such action or proceeding may be
effected by mailing a copy thereof by registered or certified mail (or any
substantially similar form of mail), postage prepaid, to the Pledgor at its
address referred to in SECTION 7.2 or at such other address of which the
Collateral Agent shall have been notified pursuant thereto;

     (d) agrees that nothing herein shall affect the right to effect service of
process in any other manner permitted by law or shall limit the right to sue in
any other jurisdiction; and

     (e) waives, to the maximum extent not prohibited by law, any right it may
have to claim or recover in any legal action or proceeding referred to in this
Section any special, exemplary, punitive or consequential damages.

     7.12 ACKNOWLEDGMENTS. The Pledgor hereby acknowledges that:

     (a) it has been advised by counsel in the negotiation, execution and
delivery of the Security Documents to which it is a party;

     (b) either the Collateral Agent nor any Secured Party has any fiduciary
relationship with or duty to the Pledgor arising out of or in connection with
any Security Documents, and the relationship between the Pledgor, on the one
hand, and the Collateral Agent and Secured Parties, on the other hand, in
connection herewith or therewith is solely that of debtor and creditor; and

     (c) no joint venture is created by any Security Document or otherwise
exists by virtue of the transactions contemplated hereby among the Secured
Parties or among the Pledgor and the Secured Parties.

     7.13 RELEASES. (a) At such time as the Leveraged Lease Obligations shall
have been paid in full, the Collateral shall automatically be released from the
Liens created hereby,

                                       17
<Page>

and this Agreement and all obligations (other than those expressly stated to
survive such termination) of the Collateral Agent and the Pledgor hereunder
shall terminate, all without delivery of any instrument or performance of any
act by any party, and all rights to the Collateral shall revert to the Pledgor.
At the request and sole expense of the Pledgor following any such termination,
the Collateral Agent shall deliver to the Pledgor any Collateral held by the
Collateral Agent hereunder, and execute and deliver to the Pledgor such
documents as the Pledgor shall reasonably request to evidence such termination.

     (b) If any of the Collateral shall be sold, transferred or otherwise
disposed of by the Pledgor in a transaction permitted by the Participation
Agreement (and the Indenture, if any Securities have been issued), then the
Collateral Agent, at the request and reasonable and sole expense of the Pledgor,
shall execute and deliver to the Pledgor all releases or other documents
reasonably necessary or desirable for the release of the Liens created hereby on
such Collateral. At the request and reasonable and sole expense of the Pledgor ,
the Pledgor shall be released from its obligations hereunder in the event that
all the Capital Stock of the Pledgor shall be sold, transferred or otherwise
disposed of in a transaction permitted by the Participation Agreement; PROVIDED
that Pledgor shall have delivered to the Collateral Agent, at least ten Business
Days prior to the date of the proposed release, a written request for release
and the terms of the sale or other disposition in reasonable detail, including
the price thereof and any expenses in connection therewith, together with a
certification by the Pledgor stating that such transaction is in compliance with
the Operative Documents.

     7.14 CONTINUING ASSIGNMENT; PLEDGE AND SECURITY INTEREST; RELEASE.

     This Agreement shall create a continuing pledge, assignment of,
hypothecation of and security interest in the Collateral and shall (A) remain in
full force and effect until the payment in full of the Leverage Lease
Obligations (PROVIDED that, if the Owner Lessor reasonably determines that there
is a material risk of the Facility Lessee being subject to bankruptcy
proceedings, the pledge under this Agreement shall remain in full force and
effect until all such payments shall have become irrevocable) and the expiration
or termination of the Facility Lease, (B) be binding upon the Pledgor, its
successors and assigns, provided, that a Pledgor may not transfer or assign any
or all of its rights or obligations hereunder without the prior written consent
of the Owner Lessor, and (C) inure to the benefit of, and be enforceable by the
Owner Lessor and its successors, transferees and assigns. Without limiting the
generality of the foregoing clause (C), the Owner Lessor may assign or otherwise
transfer all or any portion of its rights in the Obligations to the extent and
in the manner provided in the Operative Documents, and such assignee shall
thereupon become vested with all the benefits in respect thereof granted to the
Owner Lessor herein or otherwise; the parties acknowledge that, pursuant to the
Lease Indenture, the Owner Lessor pledges its rights hereunder to the Lease
Indenture Trustee as security for its obligations under the Lease Indenture;
accordingly, for as long as the Lien of the Collateral Documents remains in
effect, the Lease Indenture Trustee may exercise the Owner Lessor's rights
hereunder in accordance with, and to the extent set forth in, the Lease
Indenture.

     7.15 EXPENSES.

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<Page>

     (a) The Pledgor agrees to pay or reimburse the Owner Lessor, on an
After-Tax Basis, the Owner Participant and so long as the Lien of the Lease
Indenture has not been released or discharged, the Security Agent and each
Noteholder, for, any and all reasonable fees, costs and expenses of whatever
kind or nature incurred in connection with the creation, preservation or
protection of the Liens on, and security interest in, the Collateral pledged by
it hereunder, including, without limitation, all reasonable fees and taxes in
connection with the recording or filing of instruments and documents in public
offices, payment or discharge of any taxes or Liens upon or in respect of such
Collateral and all other reasonable fees, costs and expenses in connection with
protecting, maintaining or preserving such the Collateral, the Owner Lessor's
and, the Lease Indenture Trustee's interest therein, whether through judicial
proceedings or otherwise, or in defending or prosecuting any actions, suits or
proceedings arising out of or relating to such Collateral. If and to the extent
that the obligations of the Pledgor under this Section 7.15 are unenforceable
for any reason, the Pledgor hereby agrees to make the maximum contribution to
the payment and satisfaction of such obligations which is permissible under
applicable law.

     7.16 SECURITY INTEREST ABSOLUTE.

     (a) The obligations of the Pledgor under this Agreement are independent of
the Obligations and a separate action or actions may be brought and prosecuted
against the Pledgor to enforce this Agreement, irrespective of whether any
action is brought against another pledgor or any guarantor of the Obligations or
whether another pledgor or any guarantor of the Obligations is joined in any
such action or actions. All rights of the Owner Lessor and the pledge,
hypothecation and security interest hereunder, and all obligations of the
Pledgor hereunder, shall be absolute and unconditional, to the extent permitted
by Requirements of Law, irrespective of:

          (i) any lack of validity or enforceability of any Operative Document
     or any other agreement or instrument relating thereto;

         (ii) any change in the time, manner or place of payment of or in any
     other term of, all or any of the Obligations, or any other amendment or
     waiver of or any consent to any departure from any Operative Document,
     including, without limitation, any increase in the Obligations resulting
     from the extension of additional credit to the Facility Lessee;

        (iii) any taking, exchange, release or non-perfection of any other
     collateral, or any taking, release or amendment or waiver of, or consent to
     departure from any guaranty, for all or any of the Obligations;

         (iv) any manner of application of the Collateral, or proceeds thereof,
     to all or any of the Obligations, or any manner of sale or other
     disposition of any other collateral for all or any of the Obligations;

          (v) any change, restructuring or termination of the structure or

                                       19
<Page>

     existence of the Facility Lessee; or

          (vi) any other circumstances which might otherwise constitute a
     defense available to, or a discharge of, the Facility Lessee or a third
     party grantor of a security interest.

The Pledgor hereby waives, to the maximum extent permitted by law (i) all rights
under any law limiting remedies, including recovery of a deficiency, under an
obligation secured by a mortgage or deed of trust on real property if the real
property is sold under a power of sale contained in the mortgage, and all
defenses based on any loss whether as a result of any such sale or otherwise, of
Pledgor's right to recover any amount from the Facility Lessee or MEW, whether
by right of subrogation or otherwise; (ii) all rights under any law to require
the Owner Lessor to pursue the Facility Lessee, or any other Person, any
security which Owner Lessor may hold, or any other remedy before proceeding
against the Pledgor; (iii) all rights of reimbursement or subrogation, all
rights to enforce any remedy that the Owner Lessor may have against the Facility
Lessee, and all rights to participate in any security held by the Owner Lessor
until the Obligations have been paid and performed in full; (iv) all rights to
require the Owner Lessor to give any notices of any kind, including, without
limitation, notices of nonpayment, nonperformance, protest, dishonor, default,
delinquency or acceleration, or to make any presentments, demands or protests,
except as set forth herein or expressly provided in the Participation Agreement;
(v) all rights to assert the bankruptcy or insolvency of the Facility Lessee as
a defense hereunder or as the basis for rescission hereof; (vi) all rights under
any law purporting to reduce the Pledgor's obligations hereunder if the
Obligations are reduced; (vii) all defenses based on the disability or lack of
authority of the Facility Lessee or any Person, the repudiation of the Operative
Documents by the Facility Lessee or any Person, the failure by the Owner Lessor
to enforce any claim against the Facility Lessee, or the unenforceability in
whole or in part of any Operative Documents; (viii) all suretyship and
guarantor's defenses generally; (ix) all rights to insist upon, plead or in any
manner whatever claim or take the benefit or advantage of, any appraisal,
valuation, stay, extension, marshalling of assets, redemption or similar law, or
exemption, whether now or at any time hereafter in force, which may delay,
prevent or otherwise affect the performance by the Pledgor of its obligations
under, or the enforcement by the Owner Lessor of, this Agreement; (x) any
requirement on the part of the Owner Lessor to mitigate the damages resulting
from any default; and (xi) except as otherwise specifically set forth herein,
all rights of notice and hearing of any kind prior to the exercise of rights by
the Owner Lessor upon the occurrence and during the continuation of a Lease
Event of Default to repossess with judicial process or to replevy, attach or
levy upon the Collateral. To the extent permitted by law, the Pledgor waives the
posting of any bond otherwise required of the Owner Lessor in connection with
any judicial process or proceeding to obtain possession of, replevy, attach, or
levy upon the Collateral, to enforce any judgment or other security for the
Obligations, to enforce any judgment or other court order entered in favor of
Owner Lessor, or to enforce by specific performance, temporary restraining
order, preliminary or permanent injunction, this Agreement or any other
agreement or document between the Pledgor and the Owner Lessor. The Pledgor
further agrees that upon the occurrence and during the continuation of a Lease
Event of Default, the Collateral Agent may elect to nonjudicially or judicially
foreclose against any real or personal property security it holds for the
Obligations or any part thereof, or to exercise any other remedy against MEW, or
the Facility Lessee, any security or any guarantor, even if the effect of that
action is to deprive the Pledgor of the right to collect reimbursement from MEW,
or the Facility Lessee for any sums

                                       20
<Page>

paid by the Pledgor to the Collateral Agent.

     7.16 WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY IRREVOCABLY AND
UNCONDITIONALLY WAIVES TRIAL BY JURY IN ANY LEGAL ACTION OR PROCEEDING RELATING
TO THIS AGREEMENT OR ANY OTHER FINANCING DOCUMENT AND FOR ANY COUNTERCLAIM
THEREIN.

                                       21
<Page>

IN WITNESS WHEREOF, each of the undersigned has caused this Agreement to be duly
executed and delivered as of the date first above written.

                               EDISON MISSION HOLDINGS CO.

                               By:
                                     -------------------------------------
                                     Name:    Kevin M. Smith
                                     Title:   Vice President and Treasurer

                               MISSION ENERGY WESTSIDE, INC.

                               By:
                                     -------------------------------------
                                     Name:   Kevin M. Smith
                                     Title:  Vice President and Treasurer

Acknowledged and Agreed as of the date hereof:
   THE BANK OF NEW YORK, as successor to
      UNITED STATES TRUST COMPANY OF
      NEW YORK, as Collateral Agent

By:
      -----------------------------------------------
      Name:     Christopher J. Grell
      Title:    Assistant Vice President

                                       22
<Page>

                                                                   SCHEDULE 1 to
                                                 PLEDGE AND COLLATERAL AGREEMENT

                                NOTICE ADDRESSES

EDISON MISSION HOLDINGS CO.
MISSION ENERGY WESTSIDE, INC.

18101 Von Karman Avenue
Suite 1700
Irvine, CA 92612-1046
Attention:     TreasurerTelephone:  949-752-5588Facsimile:    949-752-5624

                                       23
<Page>

                                                                   SCHEDULE 2 to
                                                 PLEDGE AND COLLATERAL AGREEMENT

                       DESCRIPTION OF INVESTMENT PROPERTY

PART A

PLEDGED SHARES:

<Table>
<Caption>
                ISSUER                    CLASS OF STOCK       STOCK CERTIFICATE NO.           NO. OF SHARES

<S>                                      <C>                 <C>                         <C>
Mission Energy Westside, Inc.                [Common]                   [ ]                         [ ]
</Table>

                                       24
<Page>

                                                                   SCHEDULE 3 to
                                                 PLEDGE AND COLLATERAL AGREEMENT

                            FILINGS AND OTHER ACTIONS
                     REQUIRED TO PERFECT SECURITY INTERESTS

                         UNIFORM COMMERCIAL CODE FILINGS
<Table>
<Caption>
 ---------------------------------------------------------- -------------------------------------------------------
 PLEDGOR                                                    UCC FILING OFFICES
 ---------------------------------------------------------- -------------------------------------------------------
<S>                                                         <C>
 Mission Energy Westside, Inc.                              California Secretary of State
                                                            Pennsylvania Secretary of State
                                                            Indiana County, PA
 ---------------------------------------------------------- -------------------------------------------------------
</Table>

                                       25
<Page>

                      ACTIONS WITH REGARD TO PLEDGED SHARES

1)   Deliver stock certificates, accompanied by undated stock powers duly
     indorsed in blank, of Mission Energy Westside, Inc.

                                       26
<Page>

                                                                   SCHEDULE 4 to
                                                 PLEDGE AND COLLATERAL AGREEMENT

       LOCATION OF JURISDICTION OF ORGANIZATION AND CHIEF EXECUTIVE OFFICE

<Table>
<Caption>
PLEDGOR                                          JURISDICTION                  LOCATION
-------                                          ------------                  --------
<S>                                              <C>                           <C>
Mission Energy Westside, Inc.                    CA                            18101 Von Karman Avenue
                                                                               Suite 1700
                                                                               Irvine, California 92612-1046
</Table>

                                       27

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