NEVADA POWER                      EXHIBIT 10.87
                                     10-K

             RESTATED FIRST AMENDMENT TO POWER PURCHASE AGREEMENT

This Restated First Amendment to Power Purchase Agreement (this "Amendment") is
made and entered into this       30     day of April, 1998 by and between Nevada
Cogeneration Associates #1, a Utah general partnership ("Seller") and Nevada
Power Company, a Nevada corporation ("Nevada").  Seller and Nevada are sometimes
referred to herein collectively as the "Parties" and individually as a "Party".

                                   RECITALS

A. Bonneville Nevada Corporation ("Bonneville") and Nevada executed that certain
   Bonneville Nevada Contract A with Nevada Power Company for Long Term Power
   Purchases from Qualifying Facilities (the "Contract") dated May 2, 1989 which
   was assigned to Seller effective as of January 29, 1991.

B. Seller and Nevada executed that certain First Amendment to Power Purchase
   Agreement dated October 3, 1997 (the "First Amendment") under the following
   basis:

   i.   Seller and Nevada have had a continuing dispute concerning the second
        paragraph of Section 4.6.3 of the Contract and the right thereunder of
        Nevada to curtail potential purchases of capacity and energy from
        Seller's Generating Facility.

   ii.  Seller and Nevada wish to resolve their dispute and to make other
        changes to the Contract which will provide greater operating flexibility
        for Nevada and create mutually beneficial opportunities for Seller,
        Nevada, and Nevada's customers in connection with the purchase and sale
        of energy and capacity from Seller's Generating Facility.

   iii. To effect such resolution and changes, the Parties wish:

        a. To amend Section 4.6.3 of the Contract.
        b. To revise the payment provisions set forth in the Contract.
        c. To provide a mechanism by which Nevada, upon mutual agreement of the
           Parties (reached at each Party's sole discretion), may reduce its
           take of the output from Seller's Generating Facility that would
           otherwise be delivered by Seller to Nevada under the Contract.
        d. To provide a mechanism by which Seller, upon mutual agreement of the
           Parties (reached at each Party's sole discretion), may sell to other
           parties the capacity or energy from Seller's Generating Facility that
           would otherwise be dedicated by Seller to Nevada under the Contract.
        e. To allow payment for Excess Energy and Excess Capacity by Nevada to
           Seller on the basis of a negotiated market rate rather than Nevada's
           Tariff Schedule QF-Short Term Energy and Capacity rates.

                                     Page 1

 
C. Pursuant to Section 20 of the First Amendment, Nevada filed a Petition with
   the Public Utilities Commission of Nevada ("Commission") seeking approval of
   the First Amendment as executed and approval of a regulatory accounting
   treatment with respect to the First Amendment, assigned Docket No. 97-11004.

D. The Parties to Docket No. 97-11004 have filed a stipulation to amend the
   First Amendment and describe a regulatory accounting treatment acceptable to
   Nevada.  The Parties have asked the Commission to approve such stipulation.

E. The Parties entered into an Agreement to Extend Cancellation Date of First
   Amendment to Power Purchase dated March 26, 1998, for 90 days to allow time
   for approval of the stipulation.

F. The terms of the First Amendment must be revised pursuant to the terms of the
   stipulation.

     NOW, THEREFORE, in consideration of the mutual promises and obligations
stated herein and the mutual benefits to be derived therefrom, Seller and Nevada
hereby agree to this Restated First Amendment to the Contract as follows:

1. This Amendment shall amend and supersede the First Amendment and any
   amendments thereto in their entirety.

2. Section 1.8.3 of the Contract is hereby amended to read as follows:

   Nevada shall, in accordance with a Purchase Schedule, purchase and pay Seller
   for Excess Capacity and Released Capacity made available to Nevada by Seller
   only under rates, terms and conditions which are mutually agreed to by Nevada
   and Seller.

3. Section 1.9.3 of the Contract is hereby amended to read as follows:

   Nevada shall, in accordance with a Purchase Schedule, purchase and pay Seller
   for Excess Energy and Released Energy delivered to Nevada by Seller only
   under rates, terms and conditions which are mutually agreed to by Nevada and
   Seller.

4. All capitalized terms shall have the meaning stated in Section 2 of the
   Agreement, except as expressly amended by this Amendment.

5. The following definitions are hereby added to Section 2 of the Contract:

   5.1.  Derate Amount: The Contract Capacity and associated Energy less the
   -------------------                                                      
         amount of capacity and energy Seller is able to produce and deliver to
         Nevada during any time that Seller experiences a Derating.

                                     Page 2

 
   5.2.  Derating: The Seller's inability to deliver the full Contract
   --------------
         Capacity and associated Energy due to a physical partial or complete
         outage of either Seller's Generating Facility or the associated
         transmission line.

   5.3.  First Amendment Effective Date: The date the Commission issues an
   ------------------------------------
         order approving the First Amendment as amended by this Amendment.

   5.4.  Purchase Schedule: A document setting forth the mutual agreement of
   -----------------------
         the Parties regarding the sale by Seller and the purchase by Nevada of
         Excess Energy, Excess Capacity, Released Energy, and/or Released
         Capacity. The Purchase Schedule shall be substantially in the form
         attached hereto as Exhibit 2. The Purchase Schedule may be changed upon
         the express consent of the Parties.

   5.5.  Recall Time: The period of time within which Seller must become
   -----------------
         capable of delivering Released Energy to Nevada following the
         request of Nevada.

   5.6.  Release: Release, in accordance with the terms of a mutually agreed
   -------------
         upon Release Schedule, of a Party's obligation to purchase, dedicate,
         or sell capacity and energy in accordance with Section 4A hereunder,
         that would otherwise be dedicated and/or delivered by Seller to Nevada
         under the Contract.

   5.7.  Release Period: That period or those periods of time during which
   --------------------                                                   
         Release will occur.

   5.8.  Release Rate:  The payment rate for the Release.
   ------------------                                    

   5.9.  Release Schedule: A document setting forth the mutual agreement of
   ----------------------
         the Parties regarding the Release Period, the Released Energy and
         Released Capacity, the Release Rate, Recall Time, an other terms and
         conditions pertaining thereto. The Release Schedule shall be
         substantially in the form attached hereto as Exhibit 1A or Exhibit 1B,
         as applicable. The Release Schedule may be changed upon the express
         consent of the Parties.

   5.10. Released Capacity: The amount of capacity, associated with Released
   -----------------------
         Energy, that is Released.

   5.11. Released Energy:  The amount of energy that is Released.
   ---------------------                                         

6. The following sections of the Contract shall be amended to read as
   follows:

   6.1.  Section 2.11 - Excess Capacity: Capacity in excess of Contract
                        ---------------
         Capacity or as designated by the Parties during a Release Period in
         accordance with a Purchase Schedule. The amount of Excess Capacity
         shall be determined on a kWh basis hour by hour.

                                     Page 3

 
      6.2.  Section 2.12 - Excess Energy: Energy associated with Capacity in
                           -------------
            excess of Contract Capacity or as designated by the Parties during a
            Release Period in accordance with a Purchase Schedule. The amount of
            Excess Energy shall be determined on a kWh basis hour by hour.

7.    Section 4.6.3 of the Contract is hereby amended to read as follows:

      The Parties agree that the provisions of 18 C.F.R. Sec. 292.304(f)
      pertaining to curtailment and reduction of output from qualifying
      facilities shall not apply to Seller's Generating Facility or the
      obligations of Seller and Nevada under this Contract.

      Nevada shall have the right to require Seller to reduce the output of
      Seller's Generating Facility or to isolate any of Seller's Facilities from
      Nevada's electric system if, in Nevada's reasonable judgment, such actions
      are required to facilitate the maintenance of any of Nevada's facilities
      or to maintain Nevada's Electric System Integrity. Nevada shall, within a
      reasonable period of time and to the extent possible, endeavor to correct
      the condition that necessitated the reduction or isolation. The duration
      of such reduction or isolation shall be limited to the period of time that
      the condition existed plus a reasonable period of time for the restoration
      of Nevada's electric system to an operating condition that allows Nevada
      to resume the discharge of its obligations in accordance with the
      provisions of this Contract.

      If Nevada has required Seller to reduce the output of Seller's Generating
      Facility or to isolate any of Seller's Facilities from Nevada's electric
      system, Seller shall neither increase the output nor reconnect the
      isolated facilities without the prior approval of Nevada's Operating
      Representative. Provisions for obtaining such approval have been set forth
      in Exhibit C.

8.    A new Section 4A, "Release", is hereby added to the Contract to read as
      follows:

      4A.1  Nevada may request of Seller, and Seller may permit Nevada, at
            Seller's sole discretion, to be Released of its obligation to
            purchase all of the Contract Capacity and associated Energy output
            of Seller's Generating Facility for any reason pursuant to the terms
            and conditions of a Release Schedule.

            Seller may request of Nevada, and Nevada may permit Seller, at
            Nevada's sole discretion, to be Released of its obligation to
            dedicate all of the capacity and associated energy output of
            Seller's Generating Facility to Nevada for any reason pursuant to
            the terms and conditions of a Release Schedule.

            Neither Seller nor Nevada is under an obligation to accept a Release
            Schedule proposed by the other Party.

                                     Page 4

 
      4A.2  If Nevada is Released, Nevada shall pay Seller for the Release at
            the Release Rate set forth in the applicable Release Schedule. If
            Nevada is Released, payment for the Release shall be due only to the
            extent that the Seller's Generating Facility is able to produce the
            Released Energy and such Released Energy could be delivered to
            Nevada within the stated Recall Time. The ability of Seller's
            Generating Facility to produce and the availability for delivery of
            such Released Energy to Nevada shall be subject to reasonable review
            and verification by Nevada. Seller shall not take a Scheduled Outage
            during any Release Period.

            If Seller is Released, Seller shall pay Nevada for the Release at
            the Release Rate set forth in the applicable Release Schedule.

            Payment shall be made on a per kWh basis, unless otherwise agreed by
            the Parties, as if the Released Energy had been delivered.

      4A.3  If, for any reason during any Release Period, Seller experiences a
            Derating, then, for the duration of the Derating within the Release
            Period, Seller shall not deliver to Nevada capacity and energy in
            excess of Contract Capacity and associated Energy less Released
            Capacity and Released Energy less the Derate Amount. Examples of
            payments during a Derating, should it occur during a Release Period,
            in accordance with the Contract and the appropriate Release
            Schedule, are given in Exhibit 3.

      4A.4. Except as specifically provided in this Section 4A, payment for
            Release hereunder shall be made in the same manner and under the
            same conditions set forth in Section 13 hereof.

9.    Section 10.1.1 of the Contract is hereby amended to read as follows:

      Summer Season: For the purposes of this section, a summer season shall
      -------------
      include May, June, July, August, and September. During a summer season,
      total Energy produced and delivered to Nevada during the On-peak hours of
      that season must meet or exceed the product of (Contract Capacity
      multiplied by the number of On-peak hours during that season less the
      total Released Energy during that season's On-peak hours) and 90%.

10.   Section 10.1.2 of the Contract is hereby amended to read as follows:

      Winter Season: For the purposes of this section, a winter season shall
      -------------
      include the months of December, January, and February. During a winter
      season, total Energy produced and delivered to Nevada during the On-peak
      hours of that season must meet or exceed the product of (Contract Capacity
      multiplied by the number of On-peak hours during that season less the
      total Released Energy during that season's On-peak hours) and 90%.

                                     Page 5

 
11.   Exhibit A of the Contract, entitled "Power Purchase Contract Payment
      Provisions", shall be replaced in its entirety with the following:

                                   Exhibit A
                            Power Purchase Contract
                              Payment Provisions

      For the purposes of this exhibit, a summer season shall include the months
of May, June, July, August, and September.  The associated On-Peak hours shall
be the twelve (12) hours from 10:00 am to 10:00 p.m. during each day of the
summer period; all other hours shall be Off-Peak hours.

      For the purposes of this exhibit, a winter season shall include the months
of January, February, March, April, October, November, and December.  The
associated On-Peak hours shall be the five (5) hours from 5:00 am to 10:00 am
and the eight (8) hours from 4:00 p.m. to midnight during each day of the winter
period; all other hours shall be Off-Peak hours.

      Maintenance months shall include the months of March, April, October, and
November.

      Except as otherwise provided, the rates ($/kWh) applicable to this
Contract shall be:



                     Summer          Summer       Winter        Winter
                     On-Peak         Off-Peak     On-Peak       Off-Peak 
                                                    
     Capacity        0.05430         0.02084      0.03180       0.02084
     Energy          0.02070         0.02070      0.02070       0.02070
     ------          -------         -------      -------       -------
     Total           0.07500         0.04154      0.05250       0.04154


     The above cited rates shall be effective from January 1, 1990 through April
30, 1991.

     The above cited Capacity rates shall be adjusted annually, on May 1 of each
year beginning with the annual adjustment date of May 1, 1991 and ending with
the annual adjustment date of May 1, 2022, by two (2) percent per annum.

     The above cited Energy rates shall be adjusted annually, on May 1 of each
year beginning with the annual adjustment date of May 1, 1991 and ending with
the annual adjustment date of May 1, 2022, by one hundred twenty percent (120%)
of the change in the Consumer Price Index for All Urban Consumers experienced
during the preceding year; the base index shall be the index for

                                     Page 6

 
January of 1990. The Energy Rate shall then be reduced by the amounts set forth
in Table A below:

                                    Table A




- ------------------------------------------------------------------------
                                                                   $/kWh
                                                                   -----
- ------------------------------------------------------------------------
                                                                  
For the period beginning the November 1, 1997 until April 30,
1998
- ------------------------------------------------------------------------
- ------------------------------------------------------------------------
For the annual Period beginning May 1 of the year:
- --------------------------------------------------
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1998
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1999
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2000
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2001
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2002
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2003
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2004
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2005
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2006
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2007
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2008
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2009
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2010
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2011
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2012
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2013
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2014
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2015
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2016
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2017
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2018
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2019
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2020
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2021
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2022
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2023
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Except as expressly amended by this Amendment, the provisions of the Contract
  shall remain unchanged.


13. The governing law for this Amendment shall be determined in accordance with
    Section 25 of the Contract.

                                     Page 7

 
14. Any amendment to this Amendment shall be in accordance with Section 19 of
    the Contract.

15. The non-waiver provisions of Section 21 of the Contract shall also apply to
    this Amendment.

16. If any paragraph, sentence, term or provision hereof shall be held to be
    invalid or unenforceable, such invalidity or unenforceability shall not
    affect the validity or enforceability of any other paragraph, sentence, term
    or provision of this Amendment.

17. This Amendment is the result of negotiation and each Party and each Party's
    respective counsel has reviewed this Amendment.  Accordingly, the normal
    rules of construction to the effect that any ambiguity shall be resolved
    against the drafting Party shall not be employed in the interpretation of
    this Amendment.

18. This Amendment constitutes the entire agreement of the Parties with respect
    to this Amendment and supersedes any and all prior negotiations,
    correspondence, understandings, and agreements between the Parties
    concerning the subject matter of this Amendment.

19. The Parties agree to cooperate fully and to take all additional steps which
    may be necessary or appropriate to give full force and effect to the terms
    and intent of this Amendment.  This Amendment shall become effective on the
    First Amendment Effective Date.

    In the event that the First Amendment Effective Date does not occur within
    270 calendar days of the execution of the First Amendment, this Amendment
    shall become null and void.

IN WITNESS WHEREOF, the Parties have caused this Amendment to be executed by
their duly authorized representatives.


     NEVADA COGENERATION                      NEVADA POWER COMPANY
     ASSOCIATES #2                

  
     By: /s/ J.R. Gilmer                      By:  /s/ Steven W. Rigazio
        -------------------------                 ----------------------------
        J.R. Gilmer                               Steven W. Rigazio
        Executive Director                        Vice President, Finance 
                                                  & Planning, Treasurer
                                                  and Chief Financial Officer

     Date: May 1, 1998                        Date:
          ------------------------                 ---------------------------
 

                                     Page 8

 
                                   EXHIBIT 1A
                                        

                                RELEASE SCHEDULE

Nevada hereby Releases Seller from the obligation to have the following capacity
and energy dedicated to Nevada:

                                   Contract                        Excess
                                   --------                        ------
Released Capacity (MW):
                                 ------------------            ----------------
Released Energy (kWh):
                                 ------------------            ----------------

Under the following terms:)
                           ------------------------------------------         
Release Period (day, month,...):
                                -------------------------------------
Release Period (hours of the day):
                                  -----------------------------------
Release Rate ($/kWh):
                     ------------------------------------------------
Recall Time (10 min, 1 hour, or as specified):
                                              ----------------------- 
Other terms:
            ---------------------------------------------------------


NEVADA COGENERATION                           NEVADA POWER COMPANY
ASSOCIATES #1  

By:                                           By:
   -------------------------------               ---------------------------- 
 

Date:                                         Date:
     ------------------------------                --------------------------


                                     Page 9

 
                                   EXHIBIT 1B
                                        

                                RELEASE SCHEDULE

Seller hereby Releases Nevada from the obligation to purchase the following:


                                         Contract
                                         --------
Released Capacity (MW):
                                     ------------------            
Released Energy (kWh):
                                     ------------------



Under the following terms:

Release Period (day, month,...):
                                -----------------------------------
Release Period (hours of the day):
                                  ---------------------------------  
Release Rate ($/kWh):
                     ---------------------------------------------- 
Recall Time (10 min, 1 hour, or as specified):
                                              ---------------------
Other terms:
            -------------------------------------------------------


NEVADA COGENERATION                           NEVADA POWER COMPANY
ASSOCIATES #1 

By:                                           By:
    ---------------------------                  ----------------------
 
Date:                                         Date:
    ---------------------------                  ----------------------

                                    Page 10

 
                                   EXHIBIT 2
                                        

                               PURCHASE SCHEDULE

Nevada hereby agrees to purchase from Seller and Seller agrees to sell to Nevada
the following capacity and energy:

                                  Released                 Excess
                                  --------                 ------
Capacity (MW):
                                --------------          -------------
Energy (kWh):
                                --------------          -------------

Under the following terms:
                                    

Term of Purchase (day, month,...):
                                  ------------------------------         
Purchase Period (hours of the day):
                                   -----------------------------
Purchase Rate ($/kWh):
                      ------------------------------------------     
WSPP Schedule:
              --------------------------------------------------
Other terms:
            ----------------------------------------------------  


NEVADA COGENERATION                         NEVADA POWER COMPANY
ASSOCIATES #1 

By:                                         By:
   -------------------------                   ----------------------
 
Date:                                         Date:
     -----------------------                       -------------------


                                    Page 11

 
                                   EXHIBIT 3
                                        


                                    Table 1/1/
                                    ------- 
                                        

Prior to Derating:
(1) Seller has the ability to deliver full 85MW Contract Capacity and
    associated Energy; and
(2) 20MW released.

Result of Derating of 20MW:
 
 
- ------------------------------------------------------------------------------------------------------------
                                                              Prior to Derating         Result of Derating
- ------------------------------------------------------------------------------------------------------------
                                                                               
Released Capacity and  Released Energy paid for at                   20MW                     20MW
 Release Rate/10/
- ------------------------------------------------------------------------------------------------------------
Capacity and  Energy purchased at Exhibit A rates                    65MW/2/             (20MW derating)
                                                                                              45MW/3/
- ------------------------------------------------------------------------------------------------------------
Excess Capacity and Excess Energy purchased at                       0MW                       0MW
negotiated rate/4/,/10/
- ------------------------------------------------------------------------------------------------------------
Released Capacity and  Released Energy repurchased at                0MW                       0MW
negotiated rate/6/,/10/
- ------------------------------------------------------------------------------------------------------------
Actual Output                                                        65MW                     45MW
- ------------------------------------------------------------------------------------------------------------




                                    Table 2/1/
                                    ------- 
                                        

Prior to Derating:
(1) Seller has the ability to deliver full 85MW Contract Capacity and associated
    Energy; and
(2) Seller has the ability to deliver 5MW of Excess Energy and Excess Capacity;
    and
(3) 20MW released.

Result of Derating of 10MW:



                                                              Prior to Derating         Result of Derating
- ------------------------------------------------------------------------------------------------------------
                                                                               
Released Capacity and  Released Energy paid for at                  20MW                      20MW
Release Rate/10/
- ------------------------------------------------------------------------------------------------------------
Capacity and  Energy purchased at Exhibit A rates                   65MW2                (5MW derating)
                                                                                              60MW
- ------------------------------------------------------------------------------------------------------------
Excess Capacity and Excess Energy purchased at                       5MW                 (5MW derating)
negotiated rate/4/,/10/                                                                        0MW/5/
 
- ------------------------------------------------------------------------------------------------------------
Released Capacity and  Released Energy repurchased at                0MW                       0MW
negotiated rate/6/,/10/
- ------------------------------------------------------------------------------------------------------------
Actual Output                                                       70MW                      60MW
- ------------------------------------------------------------------------------------------------------------


                                    Page 12


 
                                    Table 3/1/
                                    ------- 
                                        

Prior to Derating:
(1) Seller has the ability to deliver full 85MW Contract Capacity and associated
    Energy; and
(2) Seller has the ability to deliver 5MW of Excess Energy and Excess Capacity; 
    and
(3) 20MW released; and 
(4) Nevada agrees to repurchase 20MW of Released Capacity and Released Energy.

Result of Derating of 15MW:



                                                              Prior to Derating         Result of Derating
- ------------------------------------------------------------------------------------------------------------
                                                                               
Released Capacity and  Released Energy paid for at                   20MW                     20MW
Release Rate/10/
- ------------------------------------------------------------------------------------------------------------
Capacity and  Energy purchased at Exhibit A rates                   65MW2                (10MW derating)
                                                                                              55MW
- ------------------------------------------------------------------------------------------------------------
Excess Capacity and Excess Energy purchased at                       5MW                 (5MW derating)
 negotiated rate/4/,/10/                                                                      0MW/5/
 
- ------------------------------------------------------------------------------------------------------------
Released Capacity and Released Energy repurchased at                 20MW                     20MW
 negotiated rate/6/,/10/
- ------------------------------------------------------------------------------------------------------------
Actual Output                                                        90MW                     75MW
- ------------------------------------------------------------------------------------------------------------

                                        



                                    Table 4/1/
                                    ------- 
                                        

Prior to Derating:
(1) Seller has the ability to deliver full 85MW Contract Capacity and associated
    Energy; and
(2) Seller has the ability to deliver 5MW of Excess Energy and Excess Capacity; 
    and
(3) 30MW released; and
(4) Nevada agrees to repurchase 30MW of Released Capacity and Released Energy.

Result of Derating of 70MW:



                                                              Prior to Derating         Result of Derating
- ------------------------------------------------------------------------------------------------------------
                                                                               
Released Capacity and  Released Energy paid for at                   30MW                (10MW derating)
 Release Rate/10/                                                                               20MW/8/
 
- ------------------------------------------------------------------------------------------------------------
Capacity and  Energy purchased at Exhibit A rates                   55MW/2/                (55MW derating)
                                                                                              0MW/6/
- ------------------------------------------------------------------------------------------------------------
Excess Capacity and Excess Energy purchased at                       5MW                 (5MW derating)
 negotiated rate/4/,/10/                                                                      0MW/5/
 
- ------------------------------------------------------------------------------------------------------------
Released Capacity and  Released Energy repurchased at                30MW                     20MW/9/
 negotiated rate/6/, /10/
- ------------------------------------------------------------------------------------------------------------
Actual Output                                                        90MW                     20MW
- ------------------------------------------------------------------------------------------------------------


                                    Page 13

 
Footnotes:

1) In order to simplify the example, amounts are shown in MW.  Payments would be
in MWH for the MW's delivered over the duration of the conditions specified.

2) Amount of Capacity and Energy purchased at Exhibit A rates is reduced by the
amount of Released Capacity and Released Energy.  Thus:




- --------------------------------------------------------------------------------------------------------------------
                                                                                
Amount of Capacity and Energy        =      Contract Capacity and Energy       -     Released Capacity and Released
 purchased at Exhibit A rates.                        Delivered                                  Energy
- --------------------------------------------------------------------------------------------------------------------
  Table 1-3           65MW           =                  85MW                   -                  20MW
- --------------------------------------------------------------------------------------------------------------------
   Table 4            55MW           =                  85MW                   -                  30MW
- --------------------------------------------------------------------------------------------------------------------


3) The amount of Capacity and Energy purchased at Exhibit A rates is reduced by
the amount of Released Capacity and Released Energy and the Derate Amount.
Thus:



- --------------------------------------------------------------------------------------------------------------------
                                                                                
 Amount of Capacity and       =    Contract Capacity and     -      Derate       -      Released Capacity and Released
 Energy purchased at               Energy Delivered                 Amount              Energy
 Exhibit A rates.
- -----------------------------------------------------------------------------------------------------------------------
           45MW               =             85MW             -       20MW        -                   20MW
- -----------------------------------------------------------------------------------------------------------------------


4) Though the party purchasing the Excess Capacity and Excess Energy is not
material to the result shown, for simplicity, these examples assume that Nevada
is purchasing the specified amount of Excess Capacity and Excess Energy.

5) Excess is reduced to zero first because there is no output in excess of
Contract Capacity, in accordance with the definition of Excess (amount of output
in excess of Contract Capacity).

6) Though the party purchasing the Released Capacity and Released Energy is not
material to the result shown, for simplicity, these examples assume that Nevada
is purchasing the specified amount of Released Capacity and Released Energy.

7) The amount of Capacity and Energy purchased at Exhibit A rates is reduced to
zero because Seller is unable to deliver capacity and energy over the amount of
the Released Capacity and Released Energy.  Any remaining Derate Amount is
deducted from the Released Amount and any Release repurchase.

8) The amount of Released Capacity and Released Energy to be paid for by Nevada
is reduced because of Seller's inability to deliver the full Released Amount in
accordance with Section 4A.2.

9) The amount of the repurchased Released Capacity and Released Energy is
limited by the Seller's ability to deliver.

10) If more than one schedule is in effect at the time of Derating then the
weighted average of the rates, for the applicable type of schedule, prior to
Derating shall be applied to the result of Derating.  Weighted average shall be
determined as the [sum of (kWh amount multiplied by rate) divided by total kWh
amount] for the applicable type of schedule.

                                    Page 14