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                                                                   EXHIBIT 10.66

BANK OF AMERICA
1 Alie Street
London E1 8DE
England

           IRREVOCABLE STANDBY LETTER OF CREDIT NO. 6008 SB503613/99

Beneficiary:  Edison First Power Limited             Date:  July 16, 1999
              Lansdowne House
              Berkeley Square, WIX 5DH
              London, England

Applicant:    Edison Mission Energy
              18101 Von Karman Avenue, Suite 1700
              Irvine, California 92612-1046

Amount:       GBP 54,000,000                         Expiration:  July 16, 2001
              (FIFTY FOUR MILLION POUNDS STERLING)

Gentlemen:

We hereby establish our Irrevocable Standby Letter of Credit in your favor in
the aggregate amount not exceeding GBP 54,000,000 available to you on or before
the expiration hereto.  The amount of the Letter of Credit may be amended on a
semi-annual basis.

Funds under this Letter of Credit shall be available to you upon presentation to
us of a sight draft drawn by you on this bank with a notation that the same is
drawn under this Letter of Credit, identifying the same by number and
accompanied by Exhibit A, or Exhibit B, manually signed by a purported
authorized officer of the Beneficiary (who is identified as such).  Presentation
of such sight draft shall be made at 26 Elmfield Road, Bromley, Kent BR1 1WA,
Attention Standby L/C Dept. 2nd Floor.

We hereby agree that any sight draft drawn under and in compliance with the
terms of this Letter of Credit shall be duly honored by us if presented on or
before the Expiration Date at the office specified above.  If a drawing is made
by you hereunder at or prior to 10:00 AM London time on a Business Day, payment
shall be made to you of the amount specified (which shall not exceed the stated
amount) not later than 4:00 PM London time on such day and if such drawing
request is so presented to us after 10:00 AM London time on any Business Day,
payment will be made on the following Business Day not later than 1:00 PM London
time.  Any demand under this Letter of Credit must be notified by telephone to
0181-313-2178 prior to our receipt of said demand.  Payment under this Letter of
Credit shall be made in immediately available funds by wire transfer to such
account as may be designated by the Beneficiary in the applicable drawing
request.

As used herein, Business Day means any day other than a Saturday, Sunday or day
on which banking institutions in London are authorized or required by law to
close.
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Partial drawings under this Letter of Credit are allowed and each such partial
drawing shall reduce the amount thereafter available hereunder for drawings
under this Letter of Credit.

This Letter of Credit is transferable. Any transfer under this Letter of Credit
is restricted to our counters.

This Letter of Credit sets forth in full our understanding and our agreement
with you.

This Letter of Credit is subject to the Uniform Customs and Practices for
Documentary Credits (1993 Revision), International Chamber of Commerce
Publication No. 500.

Yours faithfully,
For and on behalf of
Bank of America National Trust and Savings Association.

/s/ P. Bernard                                  /s/ M. Reeves
-----------------------------                   -------------------------------
P. BERNARD                                      M. REEVES
Senior Authorized Officer                       Senior Authorized Officer
<PAGE>

BANK OF AMERICA

                                   EXHIBIT A
                                TO THAT CERTAIN
                              IRREVOCABLE STANDBY
                                LETTER OF CREDIT

To:    Bank of America

Re:    Bank of America, Irrevocable Letter of Credit No. 6008 SB503613/99

Please be advised that we wish to make a drawing under the above mentioned
Letter of Credit as follows:

(a)    Amount            GBP  [     ]
(b)    Payment Date:          [     ]

Please send funds requested to the following instruction:

Bank:        _________________________________

ABA:         _________________________________

Acct. No.    _________________________________

Acct. Name:  _________________________________

Reference:   _________________________________

Attn:        _________________________________

                                 Beneficiary Name

                                 By:     _______________________________

                                 Name:   _______________________________

                                 Title:  _______________________________

                                 Date:   _______________________________
<PAGE>

BANK OF AMERICA

                                   EXHIBIT B
                                TO THAT CERTAIN
                              IRREVOCABLE STANDBY
                                LETTER OF CREDIT

To:  Bank of America

Re:  Bank of America, Irrevocable Letter of Credit No. 6008 SB503613/99

     The undersigned hereby certifies to Bank of America (the "Bank"), with
reference to Irrevocable Standby Letter of Credit No. _____________ issued by
the Bank in favor of __________________ (the "Beneficiary"), that because the
term of this irrevocable Standby Letter of Credit No. _______________ will
expire within ten (10) Business Days (days excluding Saturdays, and Sundays, or
any other days which financial institutions in London are required by law to
close) of the date of this Certificate and [name of applicant] has failed to
deliver a replacement or renewal Letter of Credit or other security reasonably
acceptable to [name of Beneficiary], the Beneficiary is drawing upon the Letter
of Credit in any amount equal to (Pounds sterling)______________, being an
amount equal to the full value of the Letter of Credit.

Please send funds requested to the following instruction:

Bank:        _________________________________

ABA:         _________________________________

Acct. No.    _________________________________

Acct. Name:  _________________________________

Reference:   _________________________________

Attn:        _________________________________

                                    Beneficiary Name

                                    By:     _______________________________

                                    Name:   _______________________________

                                    Title:  _______________________________

                                    Date:   _______________________________<PAGE>

                                                                 Exhibit (10)(e)

                                AMENDMENT NO. 4

                                      TO

                   The First American Financial Corporation

                      EXECUTIVE SUPPLEMENTAL BENEFIT PLAN

     This Amendment No. 4 to The First American Financial Corporation Executive
Supplemental Benefit Plan (hereinafter referred to as the "Plan") is effective
as of November 12, 1999, and modifies such Plan as set forth below:

     A.  Section 2(d) (iii) of the Plan is amended to read in full as follows:

                 (d)  "Change in Control" means:

                                  *    *    *

                      "(iii)  Any other event constituting a change in control
          required to be reported in response to Item 6(e) of Schedule 14A of
          Regulation 14A under the Securities Exchange Act of 1934, as amended."

     B.   Section 3(e) (ii) of the Plan is amended to read in full as follows:

                 (e)  Change in Control

                                  *    *    *

                      "(ii)   Notwithstanding any other provision of the Plan,
          an Executive who terminates employment after a Change in Control, but
          prior to his Normal Retirement Date, shall be entitled to a Retirement
          Income Benefit in the form of a Joint and Survivor Annuity commencing
          on the first day of the month following termination of employment with
          payments for the joint lives of the Participant and his spouse equal
          to the Retirement Income Benefit that the Executive would have been
          entitled to receive under subsection (b) if he had attained his Normal
          Retirement Date on his date of termination."

     Executed at Santa Ana, California, on March 22, 2000.

                              The First American Financial Corporation
                              By:  /s/Parker S. Kennedy
                                  ------------------------------------
                                         Parker S. Kennedy
                              Its:         President

                              By:  /s/Mark R Arnesen
                                   -----------------------------------
                                         Mark R Arnesen
                              Its:          Secretary<PAGE>

                                                                Exhibit (10) (h)

                                AMENDMENT NO. 2

                                      TO

                   The First American Financial Corporation

                     MANAGEMENT SUPPLEMENTAL BENEFIT PLAN

     This Amendment No. 2 to The First American Financial Corporation Management
Supplemental Benefit Plan (hereinafter referred to as the "Plan") is effective
as of November 12, 1999, and modifies such Plan as set forth below:

     A.  Section 2(d) (iii) of the Plan is amended to read in full as follows:

               (d)  "Change in Control" means:

                                  *    *    *

                    "(iii)  Any other event constituting a change in control
         required to be reported in response to Item 6(e) of Schedule 14A of
         Regulation 14A under the Securities Exchange Act of 1934, as amended."

     B.  Section 3(e) (ii) of the Plan is amended to read in full as follows:

               (e)  Change in Control

                                  *    *    *

                    "(ii)   Notwithstanding any other provision of the Plan, an
         Executive who terminates employment after a Change in Control, but
         prior to his Normal Retirement Date, shall be entitled to a Retirement
         Income Benefit in the form of a Joint and Survivor Annuity commencing
         on the first day of the month following termination of employment with
         payments for the joint lives of the Participant and his spouse equal to
         the Retirement Income Benefit that the Executive would have been
         entitled to receive under subsection (b) if he had attained his Normal
         Retirement Date on his date of termination."

     Executed at Santa Ana, California, on March 22, 2000.

                              The First American Financial Corporation

                              By:  /s/ Parker S. Kennedy
                                  ------------------------------------
                                          Parker S. Kennedy
                              Its:            President

                              By:   /s/ Mark R Arnesen
                                  ------------------------------------
                                          Mark R Arnesen
                              Its:          Secretary

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