EXHIBIT 99.267












                           SCHEDULES AND BIDS PROTOCOL
































                           SCHEDULES AND BIDS PROTOCOL


                                TABLE OF CONTENTS



SBP 1         OBJECTIVES, DEFINITIONS AND SCOPE

SBP 1.1       OBJECTIVES

SBP 1.2       DEFINITIONS

     SBP 1.2.1    Master Definitions Supplement

     SBP 1.2.2    Special Definitions for this Protocol

     SBP 1.2.3    Rules of Interpretation

SBP 1.3       SCOPE

     SBP 1.3.1    Scope of Application to Parties

     SBP 1.3.2    Liability of the ISO


SBP 2         SCHEDULES AND NOTIFICATIONS

SBP 2.1       CONTENTS OF SCHEDULES AND ADJUSTMENT BID DATA

     SBP 2.1.1    Generation Section of a Balanced Schedule and Adjustment Bid
                  Data

     SBP 2.1.2    Demand Section of a Balanced Schedule and Adjustment Bid Data

     SBP 2.1.3    External Import/Export Section of a Balanced Schedule and
                  Adjustment Bid Data

     SBP 2.1.4    Inter-Scheduling Coordinator Trades ("Internal
                  Imports/Exports") Section of a Balanced Schedule

SBP 2.2       VALIDATION OF BALANCED SCHEDULES

     SBP 2.2.1    Stage One Validation

     SBP 2.2.2    Stage Two Validation


SBP 3         EXISTING CONTRACTS FOR TRANSMISSION SERVICE

SBP 3.1       APPLICATION OF SBP 3 TO RIGHTS UNDER EXISTING CONTRACTS

     SBP 3.1.1    Existing Rights and Non-Converted Rights

     SBP 3.1.2    Converted Rights

SBP 3.2       RESPONSIBLE PARTICIPATING TRANSMISSION OWNERS

SBP 3.3       INSTRUCTIONS DEFINING TRANSMISSION SERVICE RIGHTS

     SBP 3.3.1    Data Requirements

     SBP 3.3.2    Curtailment under Non-Emergency Conditions

     SBP 3.3.3    Instructions that can be Exercised Independent of the ISO's
                  Day-to-Day Involvement

     SBP 3.3.4    Instructions that cannot be Exercised Independent of the ISO's
                  Day-to-Day Involvement






     SBP 3.3.5    Timing of Submission of Instructions to ISO

SBP 3.4       VALIDATION OF EXISTING CONTRACT SCHEDULES


SBP 4         ADJUSTMENT BIDS

SBP 4.1       CONTENT OF ADJUSTMENT BIDS

SBP 4.2       FORMAT OF ADJUSTMENT BIDS

SBP 4.3       TIMING OF SUBMISSION OF ADJUSTMENT BIDS

SBP 4.4       ADJUSTMENT BIDS NOT PUBLISHED

SBP 4.5       VALIDATION OF ADJUSTMENT BIDS

     SBP 4.5.1    Invalidation

     SBP 4.5.2    Validation Checks

SBP 4.6       USE OF ADJUSTMENT BIDS TO ESTABLISH PRIORITIES


SBP 5         ANCILLARY SERVICES

SBP 5.1       CONTENT OF ANCILLARY SERVICES SCHEDULES AND BIDS

     SBP 5.1.1    Regulation

     SBP 5.1.2    Spinning Reserve

     SBP 5.1.3    Non-Spinning Reserve

     SBP 5.1.4    Replacement Reserve

SBP 5.2       VALIDATION OF ANCILLARY SERVICES BIDS

     SBP 5.2.1    Stage One Validation

     SBP 5.2.2    Stage Two Validation

     SBP 5.2.3    Validation Checks

SBP 5.3       BUY BACK OF ANCILLARY SERVICES


SBP 6         SUPPLEMENTAL ENERGY BIDS

SBP 6.1       CONTENT OF SUPPLEMENTAL ENERGY BIDS

     SBP 6.1.1    Generation Section of Supplemental Energy Bid Data

     SBP 6.1.2    Demand Section of Supplemental Energy Bid Data

     SBP 6.1.3    External Import Section of Supplemental Energy Bid Data

SBP 6.2       FORMAT OF SUPPLEMENTAL ENERGY BIDS

SBP 6.3       TIMING OF SUBMISSION OF SUPPLEMENTAL ENERGY BIDS

SBP 6.4       VALIDATION OF SUPPLEMENTAL ENERGY BIDS


SBP 7         INTERFACE REQUIREMENTS

SBP 7.1       WENET








SBP 7.2       TEMPLATES

SBP 7.3       PUBLIC/PRIVATE INFORMATION

SBP 7.4       INDIVIDUAL SC COMMUNICATION FAILURE

SBP 7.5       FAILURE/CORRUPTION OF WENET


SBP 8         AMENDMENTS TO THE PROTOCOL


SBP APPENDIX - TRANSMISSION RIGHTS/CURTAILMENT INSTRUCTIONS TEMPLATE









                        SCHEDULES AND BIDS PROTOCOL (SBP)


SBP 1             OBJECTIVES, DEFINITIONS AND SCOPE

SBP 1.1           OBJECTIVES

                  The objectives of this Protocol are:

                  (a)      to require the provision of scheduling data to enable
                           the ISO to undertake its scheduling process as
                           described in the ISO Tariff and in the Scheduling
                           Protocol (SP) taking into account the exercise of
                           rights under Existing Contracts for transmission
                           service;

                  (b)      to require the provision of Ancillary Services
                           schedules and bidding data required by the ISO to
                           enable the ISO to conduct its Ancillary Services
                           auction as described in the ISO Tariff and in the SP;
                           and

                  (c)      to specify the contents of Schedules and to specify
                           in detail the bidding data referred to in the ISO
                           Tariff. The scheduling process and timing of the
                           submission of data referred to are set forth in the
                           SP.


SBP 1.2           DEFINITIONS


SBP 1.2.1         MASTER DEFINITIONS SUPPLEMENT

                  Unless the context requires otherwise, any word or expression
                  defined in the Master Definitions Supplement to the ISO Tariff
                  shall have the same meaning where used in this Protocol. A
                  reference to a Section or an Appendix is to a Section or an
                  Appendix of the ISO Tariff unless otherwise specified.
                  References to SBP are to this Protocol or to the stated
                  paragraph of this Protocol.


SBP 1.2.2         SPECIAL DEFINITIONS FOR THIS PROTOCOL

                  In this Protocol, the following words and expressions shall
                  have the meanings set opposite them:

                  "EXISTING RIGHTS" as defined in Section 2.4.4.1.1 of the ISO
                  Tariff, "NON-CONVERTED RIGHTS" and "CONVERTED RIGHTS" as
                  defined in Section 2.4.4.2.1 of the ISO Tariff shall have the
                  same meanings where used in this Protocol.








SBP 1.2.3         RULES OF INTERPRETATION

                  (a)      Unless the context otherwise requires, if the
                           provisions of this Protocol and the ISO Tariff
                           conflict, the ISO Tariff will prevail to the extent
                           of the inconsistency. The provisions of the ISO
                           Tariff have been summarized or repeated in this
                           Protocol only to aid understanding.

                  (b)      A reference in this Protocol to a given agreement,
                           ISO Protocol or instrument shall be a reference to
                           that agreement or instrument as modified, amended,
                           supplemented or restated through the date as of which
                           such reference is made.

                  (c)      The captions and headings in this Protocol are
                           inserted solely to facilitate reference and shall
                           have no bearing upon the interpretation of any of the
                           terms and conditions of this Protocol.

                  (d)      This Protocol shall be effective as of the ISO
                           Operations Date.

                  (e)      References to time are references to the prevailing
                           Pacific Time.


SBP 1.3           SCOPE

SBP 1.3.1         SCOPE OF APPLICATION TO PARTIES

                  The SBP applies to the following entities:

                  (a)      Scheduling Coordinators (SCs);

                  (b)      Participating Transmission Owners (PTOs); and

                  (c)      the Independent System Operator (ISO).


SBP 1.3.2         LIABILITY OF THE ISO

                  Any liability of the ISO arising out of or in relation to this
                  Protocol shall be subject to Section 14 of the ISO Tariff as
                  if references to the ISO Tariff were references to this
                  Protocol.


SBP 2             SCHEDULES AND NOTIFICATIONS

SBP 2.1           CONTENTS OF SCHEDULES AND ADJUSTMENT BID DATA

                  SCs must comply with the ISO Data Templates and Validation
                  Rules document, which contains the format for submission of
                  Schedules and bids. Each of the following data sections can be
                  submitted up to seven (7) days in advance.








SBP 2.1.1         GENERATION SECTION OF A BALANCED SCHEDULE AND ADJUSTMENT BID
                  DATA

                  The Generation section of a Balanced Schedule will include the
                  following information for each Generating Unit:

                  (a)      SC's ID code;

                  (b)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;

                  (c)      name of Generating Unit scheduled;

                  (d)      type of Schedule: Preferred or Revised (refer to the
                           SP for details);

                  (e)      priority type, if applicable, to the Settlement
                           Period (use OTHER if scheduling the use of Existing
                           Contract rights or RLB_MUST_RUN) for Reliability
                           Must-Run Generation;

                  (f)      contract reference number for Reliability Must-Run
                           Generation or Existing Contract (or set of
                           interdependent Existing Contracts);

                  (g)      Congestion Management flag - "Yes" indicates that any
                           Adjustment Bid submitted under item (k) below should
                           be used;

                  (h)      publish Adjustment Bid flag, which will not be
                           functional on the ISO Operations Date. In the future,
                           "Yes" will indicate that the SC wishes the ISO to
                           publish its Adjustment Bids;

                  (i)      Generating Unit ramp rate in MW/minute;

                  (j)      hourly scheduled Generating Unit output in MWh (the
                           ISO will multiply these values by the hourly
                           Generation Meter Multipliers), including any zero
                           values, for each Settlement Period of the Trading Day
                           (in the case of a Day-Ahead Schedule) and for the
                           relevant Settlement Period (in the case of an
                           Hour-Ahead Schedule); and

                  (k)      the MW and $/MWh values for each Generating Unit for
                           which an Adjustment Bid is being submitted consistent
                           with SBP 4.


SBP 2.1.2         DEMAND SECTION OF A BALANCED SCHEDULE AND ADJUSTMENT BID DATA

                  The Demand section of a Balanced Schedule will include the
                  following information for each Demand location:

                  (a)      SC's ID code;

                  (b)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;

                  (c)      Demand ID - Demand location (which must be the name
                           of a Demand Zone, Load group or bus);

                  (d)      type of Schedule: Preferred or Revised (refer to the
                           SP for details);





                  (e)      contract reference number for Existing Contracts (or
                           set of interdependent Existing Contracts);

                  (f)      Congestion Management flag - "Yes" indicates that any
                           Adjustment Bid submitted for a Dispatchable Load
                           under item (i) below should be used;

                  (g)      publish Adjustment Bid flag, which will not be
                           functional on the ISO Operations Date. In the future,
                           "Yes" will indicate that the SC wishes the ISO to
                           publish its Adjustment Bids;

                  (h)      hourly scheduled MWh, including any zero values, for
                           each Settlement Period of the Trading Day (in the
                           case of a Day-Ahead Schedule) and for the relevant
                           Settlement Period (in the case of an Hour-Ahead
                           Schedule); and

                  (i)      the MW and $/MWh values for each Dispatchable Load
                           for which an Adjustment Bid is being submitted
                           consistent with SBP 4.


SBP 2.1.3         EXTERNAL IMPORT/EXPORT SECTION OF A BALANCED SCHEDULE AND
                  ADJUSTMENT BID DATA

                  The external import/export section of a Balanced Schedule will
                  include the following information for each import or export:

                  (a)      SC's ID code;

                  (b)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;

                  (c)      Scheduling Point (the name);

                  (d)      type of Schedule: Preferred or Revised (refer to the
                           SP for details);

                  (e)      interchange ID (the name of the selling entity, the
                           buying entity, and a numeric identifier);

                  (f)      Energy type - firm (FIRM), non-firm (NFRM) or
                           Wheeling (WHEEL);

                  (g)      dynamic schedule flag - "Yes" indicates the SC will
                           be dynamically scheduling the external import at the
                           Scheduling Point;

                  (h)      external Control Area ID;

                  (i)      priority type, if applicable, to the Settlement
                           Period (use OTHER if scheduling the use of Existing
                           Contract rights or RLB_MUST_RUN) for Reliability
                           Must-Run Generation;






                  (j)      contract reference number for Reliability Must-Run
                           Generation or Existing Contract (or set of
                           interdependent Existing Contracts);

                  (k)      contract type - transmission (TRNS), Energy (ENGY) or
                           both (TR_EN);

                  (l)      Schedule ID (NERC ID number);

                  (m)      Congestion Management flag - "Yes" indicates that any
                           Adjustment Bid submitted for an external
                           import/export in item (r) below should be used;

                  (n)      publish Adjustment Bid flag, which will not be
                           functional on the ISO Operations Date. In the future,
                           "Yes" will indicate that the SC wishes the ISO to
                           publish its Adjustment Bids;

                  (o)      complete WSCC tag;

                  (p)      hourly scheduled external imports/exports in MWh (the
                           ISO will multiply these values by the hourly
                           Generation Meter Multipliers), including any zero
                           values, for each Settlement Period of the Trading Day
                           (in the case of a Day-Ahead Schedule) and for the
                           relevant Settlement Period (in the case of an
                           Hour-Ahead Schedule) and with external imports into
                           the ISO Controlled Grid reported as negative
                           quantities and external exports from the ISO
                           Controlled Grid reported as positive quantities; and

                  (q)      the MW and $/MWh values for each external
                           import/export for which an Adjustment Bid is being
                           submitted consistent with SBP 4.


SBP 2.1.4         INTER-SCHEDULING COORDINATOR TRADES ("INTERNAL
                  IMPORTS/EXPORTS") SECTION OF A BALANCED SCHEDULE

                  In the event of an Inter-Scheduling Coordinator Trade, the SCs
                  who are parties to that trade must agree on a Zone in which
                  the trade will be deemed to take place ("Trading Zone") and
                  notify the ISO accordingly. If the SCs which are parties to
                  the trade cannot agree on a Trading Zone, the ISO will
                  designate one. The purpose of designating a Trading Zone is to
                  provide for the allocation of Usage Charges which may arise in
                  connection with the trade. Any two SCs can only have one
                  Inter-Scheduling Coordinator Trade between them in each
                  Trading Zone. The Inter-Scheduling Coordinator Trades section
                  of a Schedule will include the following information for each
                  Inter-Scheduling Coordinator Trade:

                  (a)      SC's ID code;

                  (b)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;






                  (c)      trading SC (buyer or seller);

                  (d)      type of Schedule: Preferred or Revised (refer to the
                           SP for details);

                  (e)      contract reference number for Existing Contract (or
                           set of interdependent Existing Contracts);

                  (f)      hourly scheduled MWh for each Settlement Period of
                           the Trading Day that uses the Existing Contract
                           indicated in (e) above (which values should be less
                           than or equal to the values indicated in (i) below);

                  (g)      Trading Zone;

                  (h)      Schedule type - Energy (ENGY); and

                  (i)      hourly scheduled MWh, including any zero values, for
                           each Settlement Period of the Trading Day (in the
                           case of a Day-Ahead Schedule) and for the relevant
                           Settlement Period (in the case of an Hour-Ahead
                           Schedule), with internal imports into the SC reported
                           as negative quantities and internal exports from the
                           SC reported as positive quantities.


SBP 2.2           VALIDATION OF BALANCED SCHEDULES

                  Each SC will be assigned a workspace within the ISO's
                  scheduling system. Each workspace will have a work area for
                  Day-Ahead and Hour-Ahead Schedules, Adjustment Bids and
                  Supplemental Energy bids. The SC shall only be allowed to
                  access and manipulate its Schedule and bid data within this
                  workspace. Each area is organized into segments. A segment is
                  used to hold the SC's Schedules relating to the same Trading
                  Day. The Schedule validation process is divided into two
                  stages. The ISO shall carry out the first stage validation
                  immediately after it has received a Schedule. The ISO shall
                  carry out the second stage validation ten (10) minutes before
                  (pre-validation) and immediately after each deadline (as
                  specified in the SP) for submission of Schedules. However, a
                  SC can also initiate the stage two validation at any time
                  prior to that deadline, as described in more detail in the SP.
                  If the SC adds a new Schedule or modifies an existing
                  Schedule, that Schedule must be re-validated. SCs must comply
                  with the ISO Data Templates and Validation Rules document,
                  which contains the validation criteria for Balanced Schedules.


SBP 2.2.1         STAGE ONE VALIDATION

                  During stage one validation, each incoming Schedule will be
                  validated to verify proper content, format and syntax. The ISO
                  will check that the SC had not exceeded its Security Amount
                  and verify that the SC is







                  certified in accordance with the ISO Tariff. The ISO will
                  further verify that the SC has inputted valid Generating Unit
                  and Demand location identification. Scheduled Reliability
                  Must-Run Generation will be verified against the contract
                  reference numbers in the ISO's Scheduling Coordinator
                  database. A technical validation will be performed verifying
                  that a scheduled Generating Unit's output is not beyond it's
                  declared capacity and/or operating limits. If there is an
                  error found during stage one validation, the SC will be
                  notified immediately through WEnet. The SC can then look at
                  the notification messages to review the detailed list of
                  errors, make changes, and resubmit the Schedule if it is still
                  within the timing requirements of the SP. The SC is also
                  notified of successful validation via WEnet.


SBP 2.2.2         STAGE TWO VALIDATION

                  During stage two validation, Schedules will be checked to
                  determine whether each SC's aggregate Generation and external
                  imports (adjusted for Transmission Losses) and
                  Inter-Scheduling Coordinator Trades (whether purchases or
                  sales) equals the SC's aggregate Demand forecast, including
                  external exports. The SC must take into account the applicable
                  Generation Meter Multipliers (GMMs) as described in the SP.
                  This validation is performed in accordance with the timing
                  requirement described in the SP. An SC can also check whether
                  its Schedules will pass the ISO's stage two validation by
                  manually initiating validation of its Preferred Schedules or
                  Revised Schedules, as described in the SP, at any time prior
                  to the deadline for submission of Preferred Schedules or
                  Revised Schedules (as the case may be). It is the SC's
                  responsibility to perform such checks, if desired. The SC will
                  be notified immediately through WEnet of any validation
                  errors. For each error detected, an error message will be
                  generated by the ISO in the SC's notification screen which
                  will specify the nature of the error. If the ISO detects a
                  mismatch in Inter-Scheduling Coordinator Trades, the ISO will
                  notify both SCs of the mismatch in Energy quantity and/or
                  location. The SC can then look at the notification messages to
                  review the detailed list of errors, make changes, and resubmit
                  the Schedule if it is still within the timing requirements of
                  the SP. The SC is also notified of successful validation via
                  WEnet.








SBP 3             EXISTING CONTRACTS FOR TRANSMISSION SERVICE

SBP 3.1           APPLICATION OF SBP 3 TO RIGHTS UNDER EXISTING CONTRACTS


SBP 3.1.1         EXISTING RIGHTS AND NON-CONVERTED RIGHTS

                  The provisions of Sections 2.4.3 and 2.4.4 of the ISO Tariff
                  shall, with respect to the exercise of Existing Rights and
                  Non-Converted Rights, following the ISO Operations Date, be
                  implemented in accordance with this SBP 3 and such other
                  operational protocols as may be developed on a case by case
                  basis pursuant to these sections. The objective of this SBP 3
                  is to properly treat Existing Rights and Non-Converted Rights
                  in accordance with the ISO Tariff and to minimize the need for
                  other operational protocols.


SBP 3.1.2         CONVERTED RIGHTS

                  This SBP 3 shall have no application to the exercise of
                  Converted Rights other than as set forth in Section 2.4.4.3 of
                  the ISO Tariff.


SBP 3.2           RESPONSIBLE PARTICIPATING TRANSMISSION OWNERS

                  For each Existing Contract, the party providing transmission
                  service (the "Responsible PTO") shall be responsible for the
                  submission of transmission rights/curtailment instructions
                  ("instructions") to the ISO under this SBP on behalf of the
                  holders of Existing Rights and/or Non-Converted Rights, unless
                  the parties to the Existing Contract agree otherwise. For the
                  purposes of this Protocol, such otherwise agreed party will be
                  acting in the role of Responsible PTO. In accordance with the
                  ISO Tariff, the parties to Existing Contracts will attempt to
                  jointly develop and agree on any instructions that will be
                  submitted to the ISO. To the extent there is more than one PTO
                  providing transmission service under an Existing Contract or
                  there is a set of Existing Contracts which are interdependent
                  from the point of view of submitting instructions to the ISO
                  involving more than one PTO, the relevant PTOs will designate
                  a single PTO as the Responsible PTO and will notify the ISO
                  accordingly. If no such Responsible PTO is designated by the
                  relevant PTOs or the ISO is not notified of such designation,
                  the ISO shall designate one of them as the Responsible PTO and
                  notify the relevant PTOs accordingly.






SBP 3.3           INSTRUCTIONS DEFINING TRANSMISSION SERVICE RIGHTS


SBP 3.3.1         DATA REQUIREMENTS

                  The Responsible PTO with respect to an Existing Contract or
                  set of interdependent Existing Contracts is required to submit
                  to the ISO, in accordance with the timing requirements of SBP
                  3.3.5, the instructions that are necessary to implement the
                  exercise of the Existing Rights and/or the Non-Converted
                  Rights in accordance with the ISO Tariff. These instructions
                  will be submitted to the ISO electronically, by the
                  Responsible PTO, utilizing a form provided by the ISO in a
                  format similar to the one set out in the Appendix to this
                  Protocol (the "Transmission Rights/Curtailment Instructions
                  Template"). The instructions will include the following
                  information at a minimum and such other information as the ISO
                  may reasonably require to enable it to carry out its functions
                  under the ISO Tariff and ISO Protocols (the letters below
                  correspond with the letters of the instructions template in
                  the Appendix to this Protocol):

                  (a)      contract reference number a unique (Existing Contract
                           reference number that will be assigned by the ISO and
                           communicated to the Responsible PTO on the completed
                           instruction and that references a single Existing
                           Contract or a set of interdependent Existing
                           Contracts: the provisions of SBP 3.4 will apply to
                           the validation of scheduled uses of Existing Contract
                           transmission rights);

                  (b)      whether the instruction can be exercised independent
                           of the ISO's day-to-day involvement (Yes/No);

                  (c)      name of an operational single point of contact for
                           instructions and a 24-hour a day telephone number for
                           the Responsible PTO;

                  (d)      name(s) and number(s) of Existing Contract(s);

                  (e)      path name(s) and location(s) (described in terms of
                           the Zones in which the point(s) of receipt and
                           point(s) of delivery are located);

                  (f)      names of the party(ies) to the Existing Contract(s);

                  (g)      SC ID code: the ID number of the SC who will submit
                           Schedules which make use of the Existing Contract(s)
                           for the party(ies) indicated in (f);

                  (h)      type(s) of rights, by rights holder, by Existing
                           Contract (Existing Rights or Non-Converted Rights);

                  (i)      type(s) of service, by rights holder, by Existing
                           Contract (firm, conditional firm, or non-firm), with
                           priorities for firm and






                           conditional firm transmission services indicated in
                           Schedules using Adjustment Bids as described in the
                           SP;

                  (j)      amount of transmission service, by rights holder, by
                           Existing Contract expressed in MW;

                  (k)      for Day-Ahead scheduling purposes, the time of the
                           day preceding the Trading Day at which the SC submits
                           Schedules to the ISO referencing the Existing
                           Contract(s) identified in the instructions;

                  (l)      for Hour-Ahead or real time scheduling purposes, the
                           number of minutes prior to the start of the
                           Settlement Period of delivery at which the SC may
                           submit Schedule adjustments to the ISO regarding the
                           Existing Rights or Non-Converted Rights under the
                           Existing Contract(s) identified in the instructions;
                           (m) whether or not real time modifications to
                           Schedules associated with Existing Rights or
                           Non-Converted Rights are allowed at any time during
                           the Settlement Period;

                  (n)      Service period(s) of the Existing Contract(s);

                  (o)      any special procedures which would require
                           curtailments to be implemented by the ISO in any
                           manner different than that specified in SBP 3.3.2.
                           Any such instructions submitted to the ISO must be
                           clear, unambiguous, and not require the ISO to make
                           any judgments or interpretations as to the meaning,
                           intent, results, or purpose of the curtailment
                           procedures or the Existing Contract (otherwise, they
                           will not be accepted by the ISO); and

                  (p)      any special procedures relating to curtailments
                           during emergency conditions. Any such instructions
                           submitted to the ISO must be clear, unambiguous, and
                           not require the ISO to make any judgments or
                           interpretations as to the meaning, intent, results,
                           or purpose of the curtailment procedures or the
                           Existing Contract (otherwise, they will not be
                           accepted by the ISO).


SBP 3.3.2         CURTAILMENT UNDER NON-EMERGENCY CONDITIONS

                  Unless otherwise specified by the Responsible PTO in the
                  instructions that it submits to the ISO under SBP 3.3.1, the
                  ISO will allocate any necessary curtailments under
                  non-emergency conditions, pro rata, among holders of Existing
                  Rights or Non-Converted Rights, at particular Scheduling
                  Points and/or on particular contract paths, in the order of:
                  (1) non-firm, (2) each priority of conditional firm, and (3)
                  each priority of firm rights. Priorities for firm and
                  conditional firm






                  transmission service are indicated using Adjustment Bids, as
                  described in the SP.


SBP 3.3.3         INSTRUCTIONS THAT CAN BE EXERCISED INDEPENDENT OF THE ISO'S
                  DAY-TO-DAY INVOLVEMENT

                  In relation to instructions that define the transmission
                  rights within which uses may be scheduled or curtailed and
                  that can be exercised independent of the ISO's day-to-day
                  involvement, without involving an Inter-Zonal Interface, the
                  outcomes shall be forwarded to the ISO by the SC. These
                  instructions must be submitted to the ISO in accordance with
                  SBP 3.3.1. The outcomes must be delivered by the SC to the ISO
                  at or before 5:00 pm of the fifth (5th) day of the month for
                  each Settlement Period of the preceding month and must
                  include, at a minimum, the following attributed specifically
                  to each Existing Contract or set of interdependent Existing
                  Contracts:

                  (a)      the amount (in MW) and type of transmission service
                           (firm, conditional firm, or non-firm) accounted to
                           each rights holder between each of the Zones and
                           locations identified by the Responsible PTO in the
                           instructions; and

                  (b)      the amount (in MW) of transmission service
                           curtailments, if any, applied to each rights holder
                           within each Zone identified by the Responsible PTO in
                           the instructions.


SBP 3.3.4         INSTRUCTIONS THAT CANNOT BE EXERCISED INDEPENDENT OF THE ISO'S
                  DAY-TO-DAY INVOLVEMENT

                  Those instructions that define the transmission rights within
                  which uses may be scheduled or curtailed and that cannot be
                  exercised independent of the ISO's day-to-day involvement must
                  be submitted to the ISO in accordance with SBP 3.3.1. These
                  instructions will be provided by the Responsible PTO to the
                  ISO for implementation unless the parties to the Existing
                  Contracts otherwise agree that the rights holder will do so.
                  For these instructions, the SCs representing the holders of
                  Existing Rights and/or Non-Converted Rights will submit their
                  Schedules to the ISO for implementation in accordance with the
                  instructions.


SBP 3.3.5         TIMING OF SUBMISSION OF INSTRUCTIONS TO ISO


SBP 3.3.5.1       INITIAL SUBMITTAL OF INSTRUCTIONS

                  The Responsible PTOs shall submit instructions to the ISO
                  associated with Existing Contracts or sets of interdependent
                  Existing Contracts thirty (30) days prior to either (a) the
                  ISO Operations Date or (b) the date on which the scheduling or
                  curtailment of the use of the Existing







                  Rights or Non-Converted Rights is to commence pursuant to
                  Sections 2.4.3 or 2.4.4 of the ISO Tariff.


SBP 3.3.5.2       CHANGES TO INSTRUCTIONS

                  Updates or changes to the instructions must be submitted to
                  the ISO by the Responsible PTO, on an as needed or as required
                  basis determined by the parties to the Existing Contracts. The
                  ISO will implement the updated or changed instructions as soon
                  as practicable but not later than seven (7) days after
                  receiving clear and unambiguous details of the updated or
                  changed instructions. If the ISO finds the instructions to be
                  inconsistent with respect to the ISO Protocols or the ISO
                  Tariff, the ISO will notify the Responsible PTO within
                  forty-eight (48) hours after receipt of the updated or changed
                  instructions indicating the nature of the problem and allowing
                  the Responsible PTO to resubmit the instructions as if they
                  were new, updated or changed instructions to which the
                  provisions of this SBP 3.3 will apply. If the ISO finds the
                  updated or changed instructions to be acceptable, the ISO will
                  time-stamp the updated instructions as received, confirm such
                  receipt to the Responsible PTO, and indicate the time at which
                  the updated instructions take effect if prior to the seven (7)
                  day deadline referred to above.


SBP 3.4           VALIDATION OF EXISTING CONTRACT SCHEDULES

                  Each Schedule submitted to the ISO by a SC representing a
                  rights holder to an Existing Contract must include a valid
                  contract reference number in accordance with SBP 3.3. If the
                  Schedule includes an Inter-Scheduling Coordinator Trade, only
                  one of the SCs should submit a contract reference number. If a
                  match of the Schedule's contract reference number is found in
                  the ISO's database and the Schedule is consistent with the
                  instructions submitted previously by the Responsible PTO, the
                  Schedule will be implemented in accordance with the
                  instructions. If a match of the Schedule's contract reference
                  number cannot be found in the ISO's database or if both SCs
                  which are parties to an Inter-Scheduling Coordinator Trade
                  submit contract reference numbers, the ISO will contact the SC
                  and indicate the nature of the problem. The ISO will assist
                  the SC, within reason, in resolving the problem so that the SC
                  is able to submit the Schedule successfully as soon as
                  possible within the timing requirements of the SP. If the SC
                  uses a contract reference number for which the Responsible PTO
                  has not reserved transmision capacity on a particular path
                  (i.e., the contract reference number cannot be found in the
                  ISO's scheduling applications table of







                  contract reference numbers), the scheduled use wil be treated
                  as a new firm use with a $0/MWh Adjustment Bid.


SBP 4             ADJUSTMENT BIDS
                  Adjustment Bids will be used by the ISO for Congestion
                  Management as described in the SP and are initially valid only
                  for the markets into which they are bid, being the Day-Ahead
                  Market or the Hour-Ahead Market. These Adjustment Bids will
                  not be transformed into Supplemental Energy bids. However,
                  these Adjustment Bids are treated as standing offers to the
                  ISO and may be used by the ISO in the Real Time Market for the
                  sole purpose of managing Intra-Zonal Congestion.


SBP 4.1           CONTENT OF ADJUSTMENT BIDS

                  Adjustment Bids are contained in Preferred Schedules and
                  Revised Schedules submitted by SCs for particular Generating
                  Units, Dispatchable Loads and external imports/exports.
                  Adjustment Bids cannot be submitted with respect to
                  Inter-Scheduling Coordinator Trades.

                  Each SC is required to submit a preferred operating point for
                  each Generating Unit, Dispatchable Load and external
                  import/export (these quantities are presented in the SC's
                  submitted Schedule as "Hourly MWh"). The SC's preferred
                  operating point for each Generating Unit, Dispatchable Load
                  and external import/export must be within the range of any
                  Adjustment Bids to be used by the ISO. The minimum MW output
                  level, which may be zero MW (or negative for pumped storage
                  resources), and the maximum MW output level must be physically
                  achievable.


SBP 4.2           FORMAT OF ADJUSTMENT BIDS

                  Adjustment Bids will be presented in the form of a
                  monotonically non-decreasing staircase function for Generating
                  Units and external imports. Adjustment Bids will be presented
                  in the form of a monotonically non-increasing staircase
                  function for Dispatchable Loads and external exports. These
                  staircase functions will be composed of up to eleven (11)
                  ordered pairs (i.e., ten (10) steps or price bands) of
                  quantity/price information. Adjustment Bids are submitted as
                  an integral part of the SC's Balanced Schedule and must be
                  related to each Generating Unit, Dispatchable Load and
                  external import/export. SCs must comply with the ISO Data
                  Templates and Validation Rules document, which contains the
                  format for submission of Adjustment Bids.








SBP 4.3           TIMING OF SUBMISSION OF ADJUSTMENT BIDS

                  The specific timeline requirements for the submission of
                  Adjustment Bids in both the Day-Ahead Market and the
                  Hour-Ahead Market are described in the SP. During the ISO's
                  Day-Ahead scheduling process, in accordance with the SP, the
                  MW range of the Adjustment Bids specified in the Preferred
                  Day-Ahead Schedule, but not the price values, may be changed
                  by the SC in its Revised Day-Ahead Schedule, if any.


SBP 4.4           ADJUSTMENT BIDS NOT PUBLISHED

                  The ISO will not publish Adjustment Bids.


SBP 4.5           VALIDATION OF ADJUSTMENT BIDS


SBP 4.5.1         INVALIDATION

                  The absence of an Adjustment Bid in a SC's Preferred Schedule
                  or Revised Schedule will not affect the validation since SCs
                  are not required to submit Adjustment Bids. If an Adjustment
                  Bid is contained in the SC's Preferred Schedule or Revised
                  Schedule but is not in the form described above, both the
                  Schedule and the Adjustment Bid will be rejected. The SC will
                  be notified immediately, via WEnet, of any validation errors.
                  For each error detected, an error message will be generated by
                  the ISO in the SC's notification screen which will specify the
                  nature of the error. The SC can then look at the notification
                  messages to review the detailed list of errors, make changes,
                  and resubmit if it is still within the timing requirements of
                  the SP. The SC is also notified of successful validation via
                  WEnet. The SCs must comply with the ISO Data Templates and
                  Validation Rules document, which contains the validation
                  criteria for Adjustment Bids.


SBP 4.5.2         VALIDATION CHECKS

                  The ISO's stage one validation checks are performed
                  automatically, whenever Schedules and Adjustment Bids are
                  submitted, as described in the SP. The ISO's stage two
                  validation is performed automatically in accordance with the
                  timing requirements described in the SP. An SC can also check
                  whether its Adjustment Bids will pass the ISO's stage two
                  validation by manually initiating validation of its Preferred
                  Schedule or Revised Schedule, as described in the SP, at any
                  time prior to the deadline for submission of Preferred
                  Schedules or Revised Schedules. It is a SC's responsibility to
                  perform such checks.







SBP 4.6           USE OF ADJUSTMENT BIDS TO ESTABLISH PRIORITIES

                  In addition to being used to establish the value each
                  Scheduling Coordinator places on the use of Congested
                  Inter-Zonal Interfaces, Adjustment Bids are also used by the
                  ISO to establish priorities associated with transmission
                  service under Existing Contracts and to establish priorities
                  associated with Reliability Must-Run Generation. Adjustment
                  Bids have been reserved for use in establishing relative
                  priorities. If the Congestion Management software is not
                  capable of supporting the particular Adjustment Bid values and
                  ranges upon the ISO Operations Date, the ISO will establish
                  alternate values and ranges, which may be changed by the ISO
                  with seven (7) days' prior notice to Scheduling Coordinators,
                  by way of a notice posted on the ISO Internet "Home Page", at
                  http://www.caiso.com, or such other Internet address as the
                  ISO may publish from time to time. Otherwise, the values and
                  ranges for Adjustment Bids to be submitted by Scheduling
                  Coordinators or Adjustment Bids implicitly assigned by the
                  Congestion Management software for these various purposes are
                  as follows:

        ADJUSTMENT BID

        VALUE/RANGE
                                    USE
        $/MWH

        10,000                      Adjustment Bid value implicitly assigned by
                                    the Congestion Management software to
                                    Inter-Scheduling Coordinator Trade exports
                                    with a valid contract reference number for
                                    the amount of the Inter-Scheduling
                                    Coordinator Trade equal to or less than the
                                    MW amount specified in the Existing Contract
                                    (i.e., specified in the "Contract MW" field
                                    of the schedule template). Usage Charges are
                                    not calculated for these scheduled uses,
                                    except for any quantity of Energy scheduled
                                    in excess of the MW amount specified in the
                                    Existing Contract (i.e., specified in the
                                    "Contract MW" field of the schedule
                                    template) which is treated as a new firm use
                                    of ISO transmission service which the
                                    Congestion Management software implicitly
                                    values at the Adjustment Bid price and for
                                    which Usage Charges may be accounted to the
                                    Scheduling Coordinator as a price-taker of
                                    ISO transmission service.





                  9,000 to 10,000   Adjustment Bid range available for Demand
                                    and external export schedules using Existing
                                    Contract rights with a valid contract
                                    reference number. Usage Charges are not
                                    calculated for these scheduled uses except
                                    for quantities of Energy scheduled in excess
                                    of the MW amount specified in the Existing
                                    Contract (which is treated as a new firm use
                                    of ISO transmission service which the
                                    Congestion Management software implicitly
                                    values at the Adjustment Bid price within
                                    this range) and for which Usage Charges may
                                    be accounted to the Scheduling Coordinator
                                    as a price-taker of ISO transmission
                                    service.

                  4,000             Adjustment Bid value implicitly assigned by
                                    the Congestion Management software to
                                    protect Day-Ahead commitments of new firm
                                    uses in the Hour-Ahead Market (specifically
                                    with respect to schedules of Demand and
                                    external exports).

                  1,500             Adjustment Bid value implicitly assigned by
                                    the Congestion Management software to
                                    Inter-Scheduling Coordinator Trade exports
                                    using new firm uses of ISO transmission
                                    service. Usage Charges are calculated for
                                    these scheduled uses.

                  700               Adjustment Bid value implicitly assigned by
                                    the Congestion Management software for
                                    Demand schedules of new firm uses when no
                                    Adjustment Bid is provided (i.e., a
                                    "price-taker"). Usage Charges are calculated
                                    for these scheduled uses. The Congestion
                                    Management software also uses this value to
                                    extend the lower megawatt end of submitted
                                    Adjustment Bids for Demand schedules to zero
                                    megawatts.







                  600               Adjustment Bid value implicitly assigned by
                                    the Congestion Management software for
                                    external export schedules of new firm uses
                                    when no Adjustment Bid is provided (i.e., a
                                    "price-taker") or to extend the lower
                                    megawatt end of the Adjustment Bid to zero
                                    megawatts. This is also the Adjustment Bid
                                    value implicitly used by the Congestion
                                    Management software to extend the upper
                                    megawatt end of a Generator's Adjustment Bid
                                    to the Generator's physical maximum limit
                                    (for external import schedules, and for
                                    external export schedules, the upper
                                    megawatt end of the Adjustment Bid is
                                    treated as the "physical" maximum limit and,
                                    as such, is not extended). Usage Charges are
                                    calculated for these scheduled uses.

                  0.01 to 250       Adjustment Bid range available for
                                    scheduling new firm uses of ISO transmission
                                    service bid as potential "price-makers." The
                                    high-end value of this range is initially
                                    set at $250/MWh, but can be increased by the
                                    ISO to $500/MWh, upon seven days notice.
                                    Usage Charges are calculated for these
                                    scheduled uses. This is the "normal"
                                    economic range for Adjustment Bids. The
                                    default Usage Charge is calculated by the
                                    Congestion Management software to fall
                                    within this range in accordance with Section
                                    7.3.1.3 of the ISO Tariff.

                  0.001 to <0.01    Adjustment Bid range available for
                                    scheduling the use of conditional firm
                                    Existing Contract rights. Although available
                                    for Existing Contract use, this range is not
                                    protected from Usage Charges since the
                                    charges would be calculated in fractions of
                                    dollars (e.g., 100 MW at $0.01/MWh produces
                                    a $1.00 charge). A contract reference number
                                    is not used for scheduling use of
                                    conditional firm Existing Contract rights.






                  0                 Adjustment Bid value available for
                                    scheduling either new firm uses of ISO
                                    transmission service or uses of Existing
                                    Contract rights and expressing a zero dollar
                                    value for adjustments. This is the
                                    Adjustment Bid value implicitly assigned by
                                    the Congestion Management software for a
                                    Generator or external import that is
                                    specified with a contract reference number
                                    that cannot be verified in the ISO's
                                    scheduling system and submitted with a
                                    negative Adjustment Bid outside of the range
                                    reserved for Existing Contracts (i.e.,
                                    -$9,000 to -$10,000).

                  -600              Adjustment Bid value implicitly assigned by
                                    the Congestion Management software for
                                    Generation and external import schedules of
                                    new firm uses when no Adjustment Bid is
                                    provided (i.e., a "price-taker") or to
                                    extend the lower megawatt end of a
                                    Generator's Adjustment Bid to the
                                    Generator's physical minimum limit. This is
                                    also the Adjustment Bid value used by the
                                    Congestion Management software to extend the
                                    lower megawatt end of an external import's
                                    Adjustment Bid to zero megawatts. If a
                                    Scheduling Coordinator is relying partially
                                    on Existing Contract rights for an external
                                    import or Generator schedule bid and wishes
                                    to be a "price-taker" for the balance not
                                    covered by those rights, it must explicitly
                                    submit this value as its Adjustment Bid for
                                    the balance.

                  -1,500            Adjustment Bid value implicitly assigned by
                                    the Congestion Management software to
                                    Inter-Scheduling Coordinator Trade imports
                                    using new firm uses of ISO transmission
                                    service. Usage Charges are calculated for
                                    these scheduled uses.

                  -4,000            Adjustment Bid value implicitly assigned by
                                    the Congestion Management software to








                                    protect Day-Ahead commitments of new firm
                                    uses in the Hour-Ahead Market (specifically
                                    with respect to schedules of Generation and
                                    external imports).

                  -9,000 to -10,000 Adjustment Bid range available for
                                    scheduling Generation and external imports
                                    using Existing Contract rights with a valid
                                    contract reference number. Usage Charges are
                                    not calculated for these scheduled uses
                                    except for quantities of Energy scheduled in
                                    excess of the MW amount specified in the
                                    Existing Contract (which is treated as a new
                                    firm use of ISO transmission service and
                                    values the additional transmission service
                                    at the Adjustment Bid price within this
                                    range) and for which Usage Charges may be
                                    accounted to the Scheduling Coordinator as a
                                    price-taker of ISO transmission service. An
                                    Adjustment Bid, for an Existing Contract
                                    use, submitted with a price for the first
                                    (or single) segment outside of this range
                                    will be treated by the Congestion Management
                                    software as a zero price bid.

                  -10,000           Adjustment Bid value implicitly assigned by
                                    the Congestion Management software to
                                    Inter-Scheduling Coordinator Trade imports
                                    with a valid contract reference number for
                                    the amount of the Inter-Scheduling
                                    Coordinator Trade equal to or less than the
                                    MW amount specified in the Existing
                                    Contract. Usage Charges are not calculated
                                    for these scheduled uses except for
                                    quantities of Energy scheduled in excess of
                                    the amount specified in the "Contract MW"
                                    field of the scheduling template (for which
                                    the amount is treated as a new firm use of
                                    ISO transmission service and values the
                                    additional transmission service at the
                                    Adjustment Bid price within this range) and
                                    for which Usage Charges are accounted to the
                                    Scheduling Coordinator as a price-taker for
                                    ISO transmission service.






                  -30,000           Adjustment Bid value available for
                                    scheduling Reliability Must-Run Generation.
                                    Usage Charges are calculated for these
                                    scheduled uses. An Adjustment Bid, for such
                                    priority type use, submitted with a price
                                    for the first (or single) segment less than
                                    this value will be treated by the Congestion
                                    Management software as zero value bid

SBP 5             ANCILLARY SERVICES
                  SCs must comply with the ISO Data Templates and Validation
                  Rules document, which contains the format for submission of
                  Ancillary Services schedules and bids. Additionally, SCs
                  should refer to the Ancillary Services bid evaluation and
                  scheduling principles contained in the SP. As also described
                  in the SP, the resources constituting a System Unit which
                  submitted Ancillary Services bids or schedules and which, as a
                  result, has been accepted by the ISO to supply Ancillary
                  Services in a Settlement Period must be disclosed to the ISO
                  one (1) hour prior to the start of the Settlement Period.


SBP 5.1           CONTENT OF ANCILLARY SERVICES SCHEDULES AND BIDS

                  Ancillary Services in the Day-Ahead Market and the Hour-Ahead
                  Market are comprised of the following: Regulation, Spinning
                  Reserve, Non-Spinning Reserve and Replacement Reserve. Each
                  Generating Unit, System Unit, Curtailable Demand or external
                  import/export for which a SC wishes to submit Ancillary
                  Services schedules and bids must meet the requirements set
                  forth in the Ancillary Services Requirements Protocol (ASRP).
                  For each Ancillary Service offered to the ISO auction or
                  self-provided, SCs must include a bid price for Energy in the
                  form of a staircase function composed of up to eleven (11)
                  ordered pairs (i.e., ten (10) steps or price bands) of
                  quantity/price information. These staircase functions must be
                  either monotonically non-decreasing (Generating Units, System
                  Units, and external imports) or monotonically non-increasing
                  (Curtailable Demands and external exports). The same resource
                  capacity may be offered into more than one ISO Ancillary
                  Service auction at the same time (the sequential evaluation of
                  such multiple offers between Ancillary Services markets to
                  eliminate double counting of capacity is described in the SP).
                  In each category of Ancillary Service, the reference to
                  "Revised" types of Schedules indicates a submittal which is
                  part of a Revised Day-Ahead Schedule as described in the SP.
                  Each of the following data sections






                  can be submitted up to seven (7) days in advance. There is no
                  provision for external imports/exports with regard to
                  Ancillary Services bids, only self-provided Ancillary Service
                  schedules under Existing Contracts. The functionality
                  necessary to accept such bids does not exist in the ISO
                  scheduling software.


SBP 5.1.1         REGULATION

                  Each SC desiring to self-provide Regulation or to participate
                  in the ISO's Regulation auction will submit the following
                  information for each relevant Generating Unit or System Unit
                  for each Settlement Period of the relevant Trading Day:

                  (a)      type of schedule: Regulation Ancillary Service
                           (ANC_SRVC) or Revised Regulation Ancillary Service
                           (REVISED_ANC_SRVC);

                  (b)      SC's ID code;

                  (c)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;

                  (d)      Generating Unit or System Unit ID code;

                  (e)      preferred bid flag, a "YES" indicates a bid and a
                           "NO" indicates a self-provided schedule;

                  (f)      upward and downward range of Generating Unit or
                           System Unit capacity over which the Generating Unit
                           or System Unit is offering to provide Regulation;

                  (g)      Generating Unit or System Unit operating limits (high
                           and low MW);

                  (h)      Generating Unit or System Unit ramp rate (MW/minute);

                  (i)      bid price for Regulation capacity ($/MW); and

                  (j)      bid price for Regulation Energy if called upon
                           ($/MWh).


SBP 5.1.2         SPINNING RESERVE


SBP 5.1.2.1       SPINNING RESERVE:  GENERATING UNITS OR SYSTEM UNITS

                  Each SC desiring to self-provide Spinning Reserve or to
                  participate in the ISO's Spinning Reserve auction will submit
                  the following information for each relevant Generating Unit or
                  System Unit for each Settlement Period of the relevant Trading
                  Day:

                  (a)      type of schedule: Spinning Reserve Ancillary Service
                           (ANC_SRVC) or Revised Spinning Reserve Ancillary
                           Service (REVISED_ANC_SRVC);

                  (b)      SC's ID code;

                  (c)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;






                  (d)      Generating Unit or System Unit ID code;

                  (e)      preferred bid flag, a "YES" indicates a bid and a
                           "NO" indicates a self-provided schedule;

                  (f)      Generating Unit or System Unit operating limits (high
                           and low MW);

                  (g)      Spinning Reserve capacity (MW);

                  (h)      Generating Unit or System Unit ramp rate (MW/minute);

                  (i)      bid price for Spinning Reserve capacity ($/MW); and

                  (j)      bid price for Spinning Reserve Energy if called upon
                           ($/MWh).


SBP 5.1.2.2       SPINNING RESERVE:  EXTERNAL IMPORTS/EXPORTS

                  Each SC desiring to self-provide Spinning Reserve using
                  transmission service available to it under Existing Contracts
                  will submit the following information for each relevant
                  external import/export for each Settlement Period of the
                  relevant Trading Day:

                  (a)      type of schedule: Spinning Reserve Ancillary Service
                           (ANC_SRVC) or Revised Spinning Reserve Ancillary
                           Service (REVISED_ANC_SRVC);

                  (b)      SC's ID code;

                  (c)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;

                  (d)      Scheduling Point (the name);

                  (e)      interchange ID code (the name of the selling entity,
                           buying entity and a numeric identifier);

                  (f)      external Control Area ID;

                  (g)      Schedule ID (NERC ID number);

                  (h)      complete WSCC tag;

                  (i)      preferred bid flag, which must be set to "NO",
                           indicating a self-provided schedule, until such time
                           as the ISO's scheduling system is able to support
                           Ancillary Services bids from external
                           imports/exports;

                  (j)      export flag, a "YES" indicates an external export and
                           a "NO" indicates an external import;

                  (k)      contract reference number for the Existing Contract;

                  (l)      Spinning Reserve capacity (MW);

                  (m)      ramp rate (MW/minute); and

                  (n)      bid price for Spinning Reserve Energy if called upon
                           ($/MWh).






SBP 5.1.3         NON-SPINNING RESERVE


SBP 5.1.3.1       NON-SPINNING RESERVE:  GENERATING UNITS OR SYSTEM UNITS

                  Each SC desiring to self-provide Non-Spinning Reserve or to
                  participate in the ISO's Non-Spinning Reserve auction will
                  submit the following information for each relevant Generating
                  Unit or System Unit for each Settlement Period of the relevant
                  Trading Day:

                  (a)      type of schedule: Non-Spinning Reserve Ancillary
                           Service (ANC_SRVC) or Revised Non-Spinning Reserve
                           Ancillary Service (REVISED_ANC_SRVC);

                  (b)      SC's ID code;

                  (c)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;

                  (d)      Generating Unit or System Unit ID code;

                  (e)      preferred bid flag, a "YES" indicates a bid and a
                           "NO" indicates a self-provided schedule;

                  (f)      time to synchronize following notification (less than
                           ten (10) minutes mandatory);

                  (g)      Non-Spinning Reserve capacity available within ten
                           (10) minutes following notification (MW);

                  (h)      Generating Unit or System Unit operating limits (high
                           and low MW);

                  (i)      Generating Unit or System Unit ramp rate (MW/minute);

                  (j)      bid price for Non-Spinning Reserve capacity ($/MW);
                           and

                  (k)      bid price for Non-Spinning Reserve Energy if called
                           upon ($/MWh).


SBP 5.1.3.2       NON-SPINNING RESERVE:  CURTAILABLE DEMANDS

                  Each SC desiring to self-provide Non-Spinning Reserve or to
                  participate in the ISO's Non-Spinning Reserve auction will
                  submit the following information for each relevant Curtailable
                  Demand for each Settlement Period of the relevant Trading Day:

                  (a)      type of schedule: Non-Spinning Reserve Ancillary
                           Service (ANC_SRVC) or Revised Non-Spinning Reserve
                           Ancillary Service (REVISED_ANC_SRVC);

                  (b)      SC's ID code;

                  (c)      type of market (Day-Ahead and Hour-Ahead) and Trading
                           Day;

                  (d)      available Curtailable Demand ID code;








                  (e)      preferred bid flag, a "YES" indicates a bid and a
                           "NO" indicates a self-provided schedule;

                  (f)      maximum allocation curtailment duration (hours)
                           (CURT_HR);

                  (g)      time to interruption following notification
                           (minutes);

                  (h)      amount of Curtailable Demand that can be interrupted
                           within ten (10) minutes following notification (MW);

                  (i)      bid price for Non-Spinning Reserve capacity ($/MW);
                           and

                  (j)      bid price for Non-Spinning Reserve Energy if called
                           upon ($/MWh).


SBP 5.1.3.3       NON-SPINNING RESERVE:  EXTERNAL IMPORTS/EXPORTS

                  Each SC desiring to self-provide Non-Spinning Reserve using
                  transmission service available to it under Existing Contracts
                  will submit the following information for each relevant
                  external import/export for each Settlement Period of the
                  relevant Trading Day:

                  (a)      type of schedule: Non-Spinning Reserve Ancillary
                           Service (ANC_SRVC) or Revised Non-Spinning Reserve
                           Ancillary Service (REVISED_ANC_SRVC);

                  (b)      SC's ID code;

                  (c)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;

                  (d)      Scheduling Point (the name);

                  (e)      interchange ID code (the name of the selling entity,
                           buying entity and a numeric identifier);

                  (f)      external Control Area ID;

                  (g)      Schedule ID (NERC ID number);

                  (h)      complete WSCC tag;

                  (i)      preferred bid flag, which must be set to "NO",
                           indicating a self-provided schedule;

                  (j)      export flag, a "YES" indicates an external export and
                           a "NO" indicates an external import;

                  (k)      contract reference number for the Existing Contract;

                  (l)      time to synchronize following notification (less than
                           ten (10) minutes mandatory);

                  (m)      Non-Spinning Reserve capacity (MW);

                  (n)      ramp rate (MW/minute); and








                  (o)      bid price for Non-Spinning Reserve Energy if called
                           upon ($/MWh).


SBP 5.1.4         REPLACEMENT RESERVE


SBP 5.1.4.1       REPLACEMENT RESERVE:  GENERATING UNITS OR SYSTEM UNITS

                  Each SC desiring to self-provide Replacement Reserve or to
                  participate in the ISO's Replacement Reserve auction will
                  submit the following information for each relevant Generating
                  Unit or System Unit for each Settlement Period of the relevant
                  Trading Day:

                  (a)      type of schedule: Replacement Reserve Ancillary
                           Service (ANC_SRVC) or Revised Replacement Reserve
                           Ancillary Service (REVISED_ANC_SRVC);

                  (b)      SC's ID code;

                  (c)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;

                  (d)      Generating Unit or System Unit ID code;

                  (e)      preferred bid flag, a "YES" indicates a bid and a
                           "NO" indicates a self-provided schedule;

                  (f)      time to synchronize following notification (less than
                           sixty (60) minutes mandatory);

                  (g)      Generating Unit or System Unit operating limits (high
                           and low MW);

                  (h)      Replacement Reserve capacity available within sixty
                           (60) minutes following notification (MW);

                  (i)      Generating Unit or System Unit ramp rates
                           (MW/minute);

                  (j)      bid price for Replacement Reserve capacity ($/MW);
                           and

                  (k)      bid price for Replacement Reserve Energy if called
                           upon ($/MWh).


SBP 5.1.4.2       REPLACEMENT RESERVE:  CURTAILABLE DEMANDS

                  Each SC desiring to self-provide Replacement Reserve or to
                  participate in the ISO's Replacement Reserve auction will
                  submit the following information for each relevant Curtailable
                  Demand for each Settlement Period of the relevant Trading Day:

                  (a)      type of schedule: Replacement Reserve Ancillary
                           Service (ANC_SRVC) or Revised Replacement Reserve
                           Ancillary Service (REVISED_ANC_SRVC);

                  (b)      SC's ID code;







                  (c)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;

                  (d)      Curtailable Demand ID code;

                  (e)      preferred bid flag, a "YES" indicates a bid and a
                           "NO" indicates a self-provided schedule;

                  (f)      maximum allocation curtailment duration (hours)
                           (CURT_HR);

                  (g)      time to reduction following notification (minutes);

                  (h)      amount of Curtailable Demand that can be interrupted
                           within sixty (60) minutes following notification
                           (MW);

                  (i)      Curtailable Demand reduction rate (MW/minute);

                  (j)      bid price for Replacement Reserve capacity ($/MW);
                           and

                  (k)      bid price for Replacement Reserve Energy if called
                           upon ($/MWh).


SBP 5.1.4.3       REPLACEMENT RESERVE:  EXTERNAL IMPORTS

                  Each SC desiring to self-provide Replacement Reserve using
                  transmission service available to it under Existing Contracts
                  will submit the following information for each relevant
                  external import for each Settlement Period of the relevant
                  Trading Day:

                  (a)      type of schedule: Replacement Reserve Ancillary
                           Service (ANC_SRVC) or Revised Replacement Reserve
                           Ancillary Service (REVISED_ANC_SRVC);

                  (b)      SC's ID code;

                  (c)      type of market (Day-Ahead or Hour-Ahead) and Trading
                           Day;

                  (d)      Scheduling Point (the name);

                  (e)      interchange ID code (the name of the selling entity,
                           buying entity and a numeric identifier);

                  (f)      external Control Area ID;

                  (g)      Schedule ID (NERC ID number);

                  (h)      complete WSCC tag;

                  (i)      preferred bid flag, which must be set to "NO",
                           indicating a self-provided schedule;

                  (j)      contract reference number for the Existing Contract;

                  (k)      time to synchronize following notification (less than
                           sixty (60) minutes mandatory);

                  (l)      Replacement Reserve capacity (MW);

                  (m)      ramp rate (MW/minute); and







                  (n)      bid price for Replacement Reserve Energy if called
                           upon ($/MWh).


SBP 5.2           VALIDATION OF ANCILLARY SERVICES BIDS

                  The ISO will verify that each Ancillary Services schedule or
                  bid conforms to the format specified for the relevant service.
                  If the Ancillary Services schedule or bid does not so conform,
                  the ISO will send a notification to the SC notifying the SC of
                  the errors in the schedules and/or bids. SCs will comply with
                  the ISO Data Templates and Validation Rules document, which
                  contains the validation criteria for Ancillary Services
                  schedules and bids. Shown below are the two stages of
                  validation carried out by the ISO:


SBP 5.2.1         STAGE ONE VALIDATION

                  During stage one validation, each incoming Ancillary Services
                  schedule or bid will be validated to verify proper content,
                  format and syntax. A technical validation will be performed to
                  verify that a schedule or bid quantity of Regulation, Spinning
                  Reserve, Non-Spinning Reserve or Replacement Reserve does not
                  exceed the available capacity for Regulation, Operating
                  Reserves and Replacement Reserve on the Generating Units,
                  System Units, Curtailable Demands and external imports/exports
                  scheduled or bid. The SC will be notified immediately through
                  WEnet of any validation errors. For each error detected, an
                  error message will be generated by the ISO in the SC's
                  notification screen which will specify the nature of the
                  error. The SC can then look at the notification messages to
                  review the detailed list of errors, make changes, and resubmit
                  if it is still within the timing requirements of the SP. The
                  SC is also notified of successful validation via WEnet.


SBP 5.2.2         STAGE TWO VALIDATION

                  Stage two validation will be conducted by the ISO in
                  accordance with Appendix E of the ISO Tariff.


SBP 5.2.3         VALIDATION CHECKS

                  The ISO's stage one validation checks are performed
                  automatically whenever Ancillary Services schedules and bids
                  are submitted, as described in the SP. The ISO's stage two
                  validation is performed automatically in accordance with the
                  timing requirements described in the SP. An SC can also check
                  whether its Ancillary Services schedules and bids will pass
                  the ISO's stage two validation by manually initiating
                  validation of its Ancillary Services schedules and bids, as
                  described in the SP, at any time prior to the deadline for






                  submission of Ancillary Services schedules and bids. It is a
                  SC's responsibility to perform such checks.


SBP 5.3           BUY BACK OF ANCILLARY SERVICES

                  Each SC desiring to buy back in the Hour-Ahead Regulation,
                  Spinning Reserve, Non-Spinning Reserve or Replacement Reserve
                  capacity sold to the ISO in the Day-Ahead Market shall do so
                  by submitting in the Hour-Ahead auction for the Settlement
                  Period concerned bids complying with the requirements of SBP
                  5.1 for the Generating Units/System Units/Curtailable Demands
                  for which the SC wishes to buy back the Ancillary Service
                  capacity concerned, showing the revised quantity (which may be
                  zero) of the Ancillary Service capacity which the SC wishes to
                  provide in the Hour-Ahead Market from the Generating
                  Units/System Units/Curtailable Demands concerned. The ISO will
                  then calculate from this the Ancillary Services capacity which
                  the SC wishes to buy back.


SBP 6             SUPPLEMENTAL ENERGY BIDS
                  There is no requirement for SCs to submit Supplemental Energy
                  bids. Supplemental Energy bids submitted, however, are
                  available to the ISO for procurement and use for Imbalance
                  Energy, additional Voltage Support and Congestion Management
                  in the Real Time Market.


SBP 6.1           CONTENT OF SUPPLEMENTAL ENERGY BIDS


SBP 6.1.1         GENERATION SECTION OF SUPPLEMENTAL ENERGY BID DATA

                  Each SC offering Supplemental Energy to the ISO will submit
                  the following information for each Generating Unit for each
                  Settlement Period:

                  (a)      SC's ID code;

                  (b)      name of Generating Unit;

                  (c)      Generating Unit operating limits (high and low MW);

                  (d)      Generating Unit ramp rate in MW/minute; and

                  (e)      the MW and $/MWh values for each Generating Unit for
                           which a Supplemental Energy bid is being submitted
                           consistent with this SBP 6.


SBP 6.1.2         DEMAND SECTION OF SUPPLEMENTAL ENERGY BID DATA

                  Each SC offering Supplemental Energy to the ISO will submit
                  the following information for each Demand for each Settlement
                  Period:






                  (a)      SC's ID code;

                  (b)      name of Demand;

                  (c)      the MW and $/MWh values for each Demand for which a
                           Supplemental Energy bid is being submitted consistent
                           with this SBP 6.


SBP 6.1.3         EXTERNAL IMPORT SECTION OF SUPPLEMENTAL ENERGY BID DATA

                  Each SC offering Supplemental Energy to the ISO will submit
                  the following information for each external import for each
                  Settlement Period;

                  (a)      SC's ID code;

                  (b)      name of Scheduling Point;

                  (c)      interchange ID (the name of the selling entity, the
                           buying entity, and a numeric identifier);

                  (d)      external Control Area ID;

                  (e)      Schedule ID (NERC ID number);

                  (f)      complete WSCC tag;

                  (g)      ramp rate (MW/minute);

                  (h)      the MW and $/MWh values for each external import for
                           which a Supplemental Energy bid is being submitted
                           consistent with this SBP 6.


SBP 6.2           FORMAT OF SUPPLEMENTAL ENERGY BIDS

                  The SC's preferred operating point for each resource must be
                  within the range of the Supplemental Energy bids. The minimum
                  MW output level specified for a resource, which may be zero MW
                  (or negative for pumped storage resources), and the maximum MW
                  output level specified for a resource must be physically
                  achievable by the resource. All submitted Supplemental Energy
                  bids must be in the form of a monotonically non-decreasing
                  staircase function for Generating Units and external imports
                  and a monotonically non-increasing staircase function for
                  Demands. These staircase functions will be composed of up to
                  eleven (11) ordered pairs (i.e., ten (10) steps or price
                  bands) of quantity/price information, with a single ramp rate
                  associated with the entire MW range. SCs must comply with the
                  ISO Data Templates and Validation Rules document, which
                  contains the format for submission of Supplemental Energy
                  bids.






SBP 6.3           TIMING OF SUBMISSION OF SUPPLEMENTAL ENERGY BIDS

                  For specific timeline requirements for the submission of
                  Supplemental Energy bids see the Dispatch Protocol.


SBP 6.4           VALIDATION OF SUPPLEMENTAL ENERGY BIDS

                  The ISO will check whether Supplemental Energy bids comply
                  with the format requirements and will notify a SC if its bid
                  does not so comply. A SC can check whether its Supplemental
                  Energy bids will pass the ISO's validation by manually
                  initiating validation of its Supplemental Energy bids at any
                  time prior to the deadline for submission of Supplemental
                  Energy bids. It is the SC's responsibility to perform such
                  checks. SCs must comply with the ISO Data Templates and
                  Validation Rules document, which contains the validation
                  criteria for Supplemental Energy bids.


SBP 7             INTERFACE REQUIREMENTS

SBP 7.1           WENET

                  WEnet provides the backbone on which any of three
                  communications mechanisms will be utilized. These are:

                  (a)      use of a web browser such as Netscape;

                  (b)      use of File Transfer Protocol (FTP); or

                  (c)      use of an Application Programming Interface (API).

                  Details of the technical aspects of each of these mechanisms,
                  including information on how to change mechanisms and back-up
                  procedures for individual SC failures, will be made available
                  by the ISO to SCs on request. It is assumed that each SC has
                  made application for and signed a Scheduling Coordinator
                  Agreement. As such, each SC will already be familiar with and
                  have arranged the mechanism, including security arrangements,
                  by which it will initially communicate with the ISO.


SBP 7.2           TEMPLATES

                  The ISO Data Templates and Validation Rules document provides
                  a description of the templates which will be utilized to enter
                  data into the ISO's systems. For each of the three
                  communications mechanisms, data entry is as follows:

                  (a)      direct entry of data into the template screens
                           through the use of a browser;







                  (b)      upload of ASCII delimited text through use of an
                           upload button on the template screens which activates
                           the FTP mechanism; or

                  (c)      use of the SC's own API.


SBP 7.3           PUBLIC/PRIVATE INFORMATION

                  Through the use of the security provisions of WEnet, some data
                  will be provided on a confidential basis (such as individual
                  SC Schedules and bids) and other ISO data (such as ISO
                  forecasts of Demand) will be published on the public section
                  of WEnet and be available to anyone.


SBP 7.4           INDIVIDUAL SC COMMUNICATION FAILURE

                  If there is a failure of communications with a SC, then, at
                  the ISO's discretion, the SC may communicate by facsimile, but
                  only if the ISO and the SC have communicated by telephone in
                  advance.


SBP 7.5           FAILURE/CORRUPTION OF WENET

                  Based on the designed reliability of the WEnet, there is no
                  external back-up communications system. In the extremely
                  unlikely event of WEnet failure, communications will be lost
                  to all SCs and the ISO will use the latest valid information
                  available to operate until restoration of WEnet.


SBP 8             AMENDMENTS TO THE PROTOCOL
                  If the ISO determines a need for an amendment to this
                  Protocol, the ISO will follow the requirements as set forth in
                  Section 16 of the ISO Tariff.





















                                  SBP APPENDIX


                         TRANSMISSION RIGHTS/CURTAILMENT
                             INSTRUCTIONS TEMPLATE








              TRANSMISSION RIGHTS/CURTAILMENT INSTRUCTIONS TEMPLATE



    (A) CONTRACT REF #        (B) IND IMP       (C) CONTACT PERSON

    [a single number]          [yes/no]          [phone number]
                                                 [name(s)]


SUBMITTED BY PTO:________________________


DATE RECEIVED BY ISO:____________________


DATE ACCEPTED BY ISO:____________________







                                                                                             (I)(J) TYPES AND AMOUNTS
                            (E) PATH NAME(S) AND LOCATION(S)                                  OF TRANSMISSION SERVICE
(D)  CONTRACT              ---------------------------------                                  -----------------------
NAME(S)/NUMBER(S)          PATH NAME(S)  POR ZONE   POD ZONE   (F) PARTY  (G) SCID (H) ER/NCR FIRM /1/  CF /1/    N-F
- -----------------          ------------  --------   --------   ---------  -------  ---------- -------   ------    ---
                                     <c>                                                   
[name/number 1]                            [zone      [zone    [party 1] [sc id 1]     [er]     [MW]     [MW]     [MW]
                                           name]      name]    [party 2] [sc id 2]    [ncr]    [ " ]    [ " ]    [ " ]
                                                               [party n] [sc id n]     [er]    [ " ]    [ " ]    [ " ]
- -------------------------------------------------------------------------------------------------------------------------
[name/number 2]                            [zone      [zone    [party 1] [sc id 1]     [er]     [MW]     [MW]     [MW]
                                           name]      name]    [party 2] [sc id 2]    [ncr]    [ " ]    [ " ]    [ " ]
                                                               [party n] [sc id n]     [er]    [ " ]    [ " ]    [ " ]
- -------------------------------------------------------------------------------------------------------------------------
[name/number n]                            [zone      [zone    [party 1] [sc id 1]     [er]     [MW]     [MW]     [MW]
                                           name]      name]    [party 2] [sc id 2]    [ncr]    [ " ]    [ " ]    [ " ]
                                                               [party n] [sc id n]     [er]    [ " ]    [ " ]    [ " ]
- -------------------------------------------------------------------------------------------------------------------------







                                           (N) SERVICE PERIOD
  (K) DA         (L) HA    (M) RT      ----------------------------
(hour-ending)   (minutes) (yes/no)     Beginning          Ending
- -------------    -------   ------      ---------          ------
                                        
  [1400]           [30]     [yes]   [hh/dd/mm/yy]     [hh/dd/mm/yy]
                  [n/a]      [no]        [ " ]            [ " ]
                   [20]     [yes]        [ " ]            [ " ]
- -------------------------------------------------------------------
  [1400]           [20]     [yes]        [ " ]            [ " ]
                  [n/a]      [no]        [ " ]            [ " ]
                   [20]     [yes]        [ " ]            [ " ]
- -------------------------------------------------------------------
  [1500]           [20]     [yes]        [ " ]            [ " ]
                  [n/a]      [no]        [ " ]            [ " ]
                   [20]     [yes]        [ " ]            [ " ]
- -------------------------------------------------------------------




(O)  NON-EMERGENCY CURTAILMENTS

         [If other than pro rata, attach spreadsheet for ISO to use in
allocating curtailments to rights holders between the indicated zones.
Otherwise, indicate "pro rata" here.]

(P)  EMERGENCY CURTAILMENTS

         [Describe special procedures/requirements here. Indicate "N/A" if
none.]


/1/ Priorities for firm and conditional firm transmission service are indicated
in Schedules using Adjustment Bids as described in the SP.