Document:

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                                                                    Exhibit 10.6

                         TAX DISAFFILIATION AGREEMENT

     This Agreement is entered into as of the __ day of ____, ____ between
Western Resources, Inc., a Kansas corporation (the "Company"), and Westar
Industries, Inc., a Kansas corporation ("Westar").

                                  WITNESSETH:

     WHEREAS, the Company, Public Service Company of New Mexico, a New Mexico
corporation, HVOLT Enterprises, Inc., a Delaware corporation ("Parent"), [HVK,
Inc.], a Kansas corporation and a wholly owned subsidiary of Parent, and [HVNM,
Inc.], a Kansas corporation and a wholly owned subsidiary of Parent, have
entered into an Agreement and Plan of Restructuring and Merger dated as of
November 8, 2000 (the "Merger Agreement");

     WHEREAS, the Company and Westar intend to enter into an Asset Allocation
and Separation Agreement dated November 8, 2000 (the "Allocation and Separation
Agreement"), providing for the distribution by the Company to its shareholders
of all of the common stock of Westar (the "Split-Off");

     WHEREAS, the Company and Westar desire to set forth their agreement on the
rights and obligations of the Company, Westar and their respective Affiliates
with respect to various Tax matters and the handling and allocation of federal,
state, and local Taxes incurred in certain Taxable periods;

     NOW, THEREFORE, in consideration of the mutual covenants and agreements
hereinafter set forth, the parties agree as follows:

1    Definitions.
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     (a)  As used in this Agreement:

          "Affiliate" (and the correlative meaning, "Affiliation") of any person
     shall mean any individual, corporation, partnership or other entity,
     directly or indirectly, controlling, controlled by or under common control
     with such person.

          "After-Tax Amount" is defined in Section 5(g).

          "Business Day" shall mean any day other than a Saturday, Sunday or one
     on which banks are authorized or required by law to close in New York, New
     York.

          "Code" shall mean the Internal Revenue Code of 1986, as amended, or
     any successor thereto.

          "Combined Kansas Tax" shall mean the combined, unitary or other
     similar Kansas Tax of the Company Consolidated Group or determined on the
     basis of any member included in the Company Group and any member included
     in the Westar Group.

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          "Combined State/Local Tax" shall mean the combined, unitary or other
     similar state (other than Kansas) or local Tax of the Company Consolidated
     Group or determined on the basis of any member included in the Company
     Group and any member included in the Westar Group.

          "Company Consolidated Group" shall mean, with respect to any Taxable
     period, the corporations which are members of the affiliated group of
     corporations of which the Company is the common parent (within the meaning
     of Section 1504 of the Code).

          "Company Group" shall mean the corporations which are members of the
     Company Consolidated Group during any Taxable period, excluding the
     corporations which are the members of the Westar Group.

          "Consolidated Federal Tax" shall mean, with respect to income Taxes,
     the Federal Tax liability of the Company Consolidated Group determined on a
     consolidated basis.

          "Effective Tax Rate" is defined in Section 5(g).

          "Federal Tax" shall mean any United States Federal Tax.

          "Final Determination" shall mean (i) with respect to Federal Taxes,
     (A) a "determination" as defined in Section 1313(a) of the Code, or (B) the
     date of acceptance by or on behalf of the Internal Revenue Service of Form
     870-AD (or any successor form thereto), as a final resolution of Federal
     Tax liability for any Taxable period, except that a Form 870-AD (or
     successor form thereto) that reserves the right of the taxpayer to file a
     claim for refund and/or the right of the Internal Revenue Service to assert
     a further deficiency shall not constitute a Final Determination with
     respect to the item or items so reserved; (ii) with respect to Taxes other
     than Federal Taxes, any final determination of liability in respect of a
     Tax provided for under applicable law; (iii) any final disposition by
     reason of the expiration of the applicable statute of limitations; and (iv)
     the payment of Tax by the Company, Westar, or any Affiliate of the Company
     or Westar, whichever is responsible for payment of such Tax under
     applicable law, with respect to any item disallowed or adjusted by a Taxing
     Authority, provided that the provisions of Section 8 hereof have been
     complied with, or, if such section is inapplicable, that the party
     responsible under the terms of this Agreement for such Tax is notified by
     the party paying such Tax that it has determined that no action should be
     taken to recoup such disallowed item, and the other party agrees with such
     determination.

          "Final Liability" is defined in Section 8(c).

          "Gross-Up Payment" shall have the meaning set forth in the employment
     agreements listed in Item 10 of Section 7.9 of the Company Disclosure
     Letter to the Merger Agreement.

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          "Kansas Tax" shall mean any Kansas state Tax.

          "Other Taxes" are defined in Section 4.

          "Pre-Split-Off Combined Kansas Tax Return" shall mean the combined
     Kansas Tax Return to be filed on behalf of the Company Consolidated Group
     for any Pre-Split-Off Period that has not been filed prior to the Split-Off
     Date.

          "Pre-Split-Off Combined State/Local Tax Return" shall mean the
     combined, unitary or other similar State/Local Tax Return (other than a
     Pre-Split-Off Combined Kansas Tax Return) to be filed on behalf of the
     Company Consolidated Group (or any member thereof) and which includes
     members of the Westar Group for any Pre-Split-Off Period that has not been
     filed prior to the Split-Off Date.

          "Pre-Split-Off Consolidated Federal Tax Return" shall mean the
     consolidated Federal Tax Return to be filed on behalf of the Company
     Consolidated Group for any Pre-Split-Off Period that has not been filed
     prior to the Split-Off Date.

          "Post-Split-Off Period" shall mean any Taxable period beginning after
     the Split-Off Date.

          "Pre-Split-Off Period" shall mean any Taxable period ending before or
     including the Split-Off Date.

          "Pre-Split-Off Tax Liability" shall mean the Tax liability of the
     Company and each corporation included in the Company Consolidated Group for
     all Pre-Split-Off Periods or portions thereof ending on or before the
     Split-Off Date regardless of whether any such liability has been previously
     assessed in whole or in part or is assessed in whole or in part after the
     date hereof, or whether such liability is or was imposed on the Company
     Consolidated Group collectively or on any corporation included within any
     such group separately.

          "Preliminary Kansas Tax Return" shall mean any preliminary Pre-Split-
     Off Combined Kansas Tax Return provided to Westar pursuant to Section 2(e).

          "Preliminary State/Local Tax Return" shall mean any preliminary Pre-
     Split-Off Combined State/Local Tax Return (other than a Preliminary Kansas
     Tax Return) provided to Westar pursuant to Section 2(f).

          "Preliminary Federal Tax Return" shall mean any preliminary Pre-Slit-
     Off Consolidated Federal Tax Return provided to Westar pursuant to Section
     2(d).

          "Prepaid Amount" is defined in Section 8(c).

          "Prime" shall mean the rate announced from time to time as "prime" by
     The Chase Manhattan Bank as its prime rate in New York City.

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          "Pro Forma Kansas Return" means any pro forma Kansas Tax Return
     setting forth the Combined Kansas Tax liability of the Westar Group
     attributable to a Pre-Split-Off Combined Kansas Tax Return.

          "Pro Forma State/Local Return" means any pro forma state or local Tax
     Return setting forth the Combined State/Local Tax liability of the Westar
     Group attributable to a Pre-Split-Off Combined State/Local Tax Return.

          "Pro Forma Federal Return" means any pro forma Federal Tax Return
     setting forth the Consolidated Federal Tax liability of the Westar Group
     attributable to a Pre-Split-Off Consolidated Federal Tax Return.

          "Referee" is defined in Section 15.

          "Return" shall mean any Tax Return, statement, report or form
     (including any consolidated, combined or unitary Returns, estimated Tax
     Returns and reports, and information Returns and reports) required to be
     filed with any Taxing Authority.

          "Split-Off Date" shall mean the date on which the Company distributes
     to its shareholders the common stock of Westar held by the Company on such
     Split-Off Date.

          "State Parent" shall mean any member of the Company Group that is
     required to file a Pre-Split-Off Combined State/Local Tax Return.

          "State/Local Tax" shall mean any state or local Tax.

          "Stock Purchase Option Agreement" shall mean the stock option purchase
     agreement for Westar Generating, Inc. between the Company and Westar dated
     as of [               ], 2000.

          "Tax" (and the correlative meaning, "Taxes," "Taxing" and "Taxable")
     shall mean (i) any net income, gross income, gross receipts, alternative or
     add-on minimum, sales, use, ad valorem, franchise, profits, license,
     withholding, payroll, employment, excise, transfer, recording, severance,
     stamp, occupation, premium, property, environmental, custom duty, or other
     tax, governmental fee or other like assessment or charge of any kind
     whatsoever, together with any interest and any penalty, addition to Tax or
     additional amount imposed by a Taxing Authority; (ii) any liability of the
     Company, Westar or any Affiliate of the Company or Westar (or, in each
     case, any predecessor or successor in interest thereto by merger or
     otherwise), as the case may be, for the payment of any amounts of the type
     described in clause (i) for any Taxable period resulting from the
     application of Treasury Regulation Section 1.1502-6 or, in the case of any
     similar provision applicable under state, local or foreign law; and (iii)
     any liability of the Company, Westar or any Affiliate of the Company or
     Westar (or, in each case, any predecessor or successor in interest thereto
     by merger or otherwise) for the payment of any amounts described in clause
     (i) as a result of any express or implied obligation to indemnify any other
     party; provided, however, that Tax shall include all

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     or any portion of the Gross-Up Payment attributable to any Tax described in
     clause (i) above or the loss of any Tax deductions attributable thereto
     only for purposes of Section 7 and 8 and, for those purposes, only as a Tax
     shared by both parties for a Pre-Split-Off Period.

          "Tax Asset" shall mean any net operating loss, net capital loss,
     investment Tax credit, foreign Tax credit, charitable deduction or any
     other credit or Tax attribute, including additions to basis of property,
     which could reduce Federal Taxes including, without limitation, deductions,
     credits, or alternative minimum net operating loss carryforwards related to
     alternative minimum Taxes.

          "Taxing Authority" shall mean any governmental authority responsible
     for the imposition of any Tax.

          "Tax Settlement" is defined in Section 8(b).

          "Westar Combined Kansas Tax Allocation Statement" is defined in
     Section 2(e).

          "Westar Combined State/Local Tax Allocation Statement" shall mean the
     statement setting forth the amount of the overpaid or underpaid portion of
     the Westar Group's allocable share of the total Combined State/Local Tax
     liability shown on the Preliminary State/Local Return.

          "Westar Consolidated Federal Tax Allocation Statement" is defined in
     Section 2(d).

          "Westar Group" shall mean the corporations which are members of the
     affiliated group of corporations of which Westar is the common parent
     (within the meaning of Section 1504 of the Code) immediately after the
     Split-Off Date and any successors thereto.

     (b)  Whenever this Agreement specifies that consent is not to be
     unreasonably withheld, the determination shall take into account, among
     other things, the relative amount of potential Tax exposure or refund
     involved for the members of the Company Group on the one hand and the
     members of the Westar Group on the other hand, and if the consent relates
     to bringing proceedings in one venue rather than another, the impact on
     such decision on such interests of each Group. Any controversy over refusal
     of a consent shall be resolved pursuant to Section 15(b).

     (c)  Any term used in this Agreement which is not defined in this Agreement
     shall, to the extent the context requires, have the meaning assigned to it
     in the Code or the applicable Treasury regulations thereunder.

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2    Administrative and Compliance Matters.
     -------------------------------------

     (a)  Sole Tax Sharing Agreement. The parties acknowledge that there has not
     been a Final Determination of all Pre-Split-Off Tax Liabilities, and that
     the members of the Westar Group are includible in the Company Consolidated
     Group for the Pre-Split-Off Period. Any and all existing Tax sharing
     agreements or arrangements, written or unwritten, between any members of
     the Company Group, on the one hand, and any members of the Westar Group, on
     the other hand, shall be terminated as of the Split-Off Date, and after
     such date this Agreement shall constitute the sole Tax sharing agreement
     between any members of the Company Group, on the one hand, and any members
     of the Westar Group, on the other hand.

     (b)   Designation of Authority. Treasury regulations (and, by incorporation
     of such Treasury regulations, Kansas state Tax rules) designate the Company
     as the sole agent of all members of the Company Consolidated Group with
     respect to all Consolidated Federal Tax matters (and, to the extent
     provided by Kansas Tax law, Combined Kansas Tax matters, respectively) for
     Pre-Split-Off Periods. The Company, as agent, shall be responsible to see
     that all such administrative matters relating thereto shall be handled in a
     timely and appropriate manner. The Company shall be Westar's agent with
     respect to making payments to, or collecting Refunds from, any Taxing
     Authority with respect to Pre-Split-Off Tax Liabilities relating to any
     Consolidated Federal Taxes or Combined Kansas Taxes that are due from or to
     the Westar Group hereunder. Westar shall reimburse the Company, or the
     Company shall reimburse Westar, as the case may be, for the Westar
     allocable share. In so acting as agent, the Company shall not take any
     action on behalf of any member of the Westar Group, including, without
     limitation, strategies relating to waivers of any statute of limitations
     without the prior written consent of Westar (which consent shall not be
     unreasonably withheld) if such action is reasonably likely to materially
     increase the amount of Tax liability of the Westar Group not subject to
     indemnification under Section 5(b) over the amount it would have been
     without such action. In the event of disagreement over whether consent is
     required or is being unreasonably withheld, the parties shall resolve their
     disagreement in accordance with Section 15.

     (c)  Westar Authority. Notwithstanding Section 2(b) hereof, if the Internal
     Revenue Service District Director (or a corresponding state official) deals
     directly with any member of the Westar Group in respect of its Consolidated
     Federal Tax, Combined Kansas Tax or Combined State/Local Tax liability for
     a Pre-Split-Off Period, Westar shall have full authority to act or to
     designate such authority to such member of the Westar Group; provided,
     however, that Westar shall notify the Company, or such member of the Westar
     Group shall notify the Company and Westar, as the case may be, of any such
     communications or dealings and, with respect to any matters involving any
     Consolidated Federal Tax, Combined Kansas Tax or Combined State/Local Tax
     for any Pre-Split-Off Period not subject to indemnification under Section
     5(b), shall deal with any such Tax Authority only as the Company specifies
     pursuant to Section 2(b) hereof

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     (subject to the limitations contained in this Agreement including the
     second to last sentence of Section 2(b)).

     (d)  Pre-Split-Off Consolidated Federal Tax Returns.

          (i)    The Company shall prepare and file the consolidated Federal Tax
     Return for any Pre-Split-Off Period that has not been filed prior to the
     Split-Off Date (a "Pre-Split-Off Consolidated Federal Tax Return").

          (ii)   Westar shall deliver to the Company the Pro Forma Federal
     Return 55 days prior to the due date for filing the Pre-Split-Off
     Consolidated Federal Tax Return (including extensions). The Company shall
     deliver to Westar the Preliminary Federal Tax Return 35 days prior to the
     due dates for filing (including extensions) and a statement setting forth
     the amount of the unpaid or overpaid portion of the Westar Group's
     allocable share of the total Consolidated Federal Tax liability, if any,
     shown on such Preliminary Federal Tax Return along with any related
     calculations used by the Company in determining such liability (the "Westar
     Consolidated Federal Tax Allocation Statement"). Such Pro Forma Federal
     Return and such Preliminary Federal Tax Return shall set forth all
     necessary and required information (including, without limitation,
     schedules, statements and such supporting documentation as the Company or
     Westar may reasonably request from time to time) in such form as would be
     required for filing with the Internal Revenue Service and shall correctly
     reflect the facts regarding the income, properties, operations and status
     of any entity required to be shown thereon. Except as otherwise required by
     law, such Pro Forma Federal Return or Preliminary Federal Tax Return shall
     be prepared making the elections and using the methods of accounting that
     were made or used by the Company Consolidated Group on the consolidated
     Federal Tax Return most recently filed with respect to a Tax period ending
     prior to the Split-Off Date unless the parties agree to make or use some
     other elections or methods of accounting (which agreement shall not be
     unreasonably withheld). The Company and Westar may (at their own expense)
     review all work papers and procedures used to prepare each Pro Forma
     Federal Return or Preliminary Federal Tax Return.

          (iii)  Westar shall notify the Company in writing of any proposed
     adjustments to a Preliminary Federal Tax Return including the Westar
     Consolidated Federal Tax Allocation Statement within 15 days of the date
     upon which it receives such Preliminary Federal Tax Return from the
     Company. In the event that the Company shall, within 5 days following the
     receipt of such notification from Westar, disagree with any proposed
     adjustment made under the above provision, such disagreement shall be
     resolved in accordance with Section 15(b). Upon agreement by the parties as
     to proposed adjustments, if any, to a Preliminary Federal Tax Return
     including the Westar Consolidated Federal Tax Allocation Statement, or upon
     a decision of the Referee, the Preliminary Federal Tax Return as adjusted
     (if at all) shall be deemed to be a final Pre-Split-Off Consolidated
     Federal Tax Return for purposes of this Agreement.

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          (iv)   Prior to the due date of the Pre-Split-Off Consolidated Federal
     Tax Return (including any extensions), the Company shall pay to Westar or
     Westar shall pay to the Company the overpayment or underpayment,
     respectively, of the Westar Group allocation shown on the Westar
     Consolidated Federal Tax Allocation Statement taking into account any
     payments made by Westar or any member of the Westar Group to the Company,
     any member of the Company Group or any Taxing Authority.

     (e)  Pre-Split-Off Combined Kansas Tax Return.
          ----------------------------------------

          (i)    The Company shall prepare and file the Combined Kansas Tax
     Return for any Pre-Split-Off Period that has not been filed prior to the
     Split-Off Date (a "Pre-Split-Off Combined Kansas Tax Return").

          (ii)   Westar shall deliver to the Company the Pro Forma Kansas Return
     55 days prior to the due date for filing the Pre-Split-Off Combined Kansas
     Tax Return (including extensions). The Company shall deliver to Westar the
     Preliminary Kansas Tax Return 35 days prior to the due dates for filing
     (including extensions) and a statement setting forth the amount of the
     unpaid or overpaid portion of the Westar Group's allocable share of the
     total Combined Kansas Tax liability, if any, shown on such Preliminary
     Kansas Tax Return along with any related calculations used by the Company
     in determining such liability (the "Westar Combined Kansas Tax Allocation
     Statement"). Such Pro Forma Kansas Return or Preliminary Kansas Tax Return
     shall set forth all necessary and required information (including, without
     limitation, schedules, statements and such supporting documentation as the
     Company or Westar may reasonably request from time to time) in such form as
     would be required for filing with the applicable Kansas Taxing Authority
     and shall correctly reflect the facts regarding the income, properties,
     operations and status of any entity required to be shown thereon. Except as
     otherwise required by law, such Pro Forma Kansas Return or Preliminary
     Kansas Tax Return shall be prepared making the elections and using the
     methods of accounting that were made or used by the Kansas Company combined
     group on the combined Kansas Tax Return most recently filed with respect to
     a Tax period ending prior to the Split-Off Date unless the parties agree to
     make or use some other elections or methods of accounting (which agreement
     shall not be unreasonably withheld). The Company and Westar may (at their
     own expense) review all work papers and procedures used to prepare each Pro
     Forma Kansas Return or Preliminary Kansas Tax Return.

          (iii)  Westar shall notify the Company in writing of any proposed
     adjustments to a Preliminary Kansas Tax Return including the Westar
     Combined Kansas Tax Allocation Statement within 15 days of the date upon
     which it receives such Preliminary Kansas Tax Return from the Company. In
     the event that the Company shall, within 5 days following the receipt of
     such notification from Westar, disagree with any proposed adjustment made
     under the above provision, such disagreement shall be resolved in

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     accordance with Section 15(b). Upon agreement by the parties as to proposed
     adjustments, if any, to a Preliminary Kansas Tax Return including the
     Westar Combined Kansas Tax Allocation Statement or upon a decision of the
     Referee, the Preliminary Kansas Tax Return as adjusted (if at all) shall be
     deemed to be a final Pre-Split-Off Combined Kansas Tax Return for purposes
     of this Agreement.

          (iv)   Prior to the due date of the Pre-Split-Off Combined Kansas Tax
     Return (including any extensions), the Company shall pay to Westar or
     Westar shall pay to the Company the overpayment or underpayment,
     respectively, of the Westar Group allocation shown on the Westar Combined
     Kansas Tax Allocation Statement taking into account any payments made by
     Westar or any member of the Westar Group to the Company, any member of the
     Company Group or any Taxing Authority.

     (f)  Pre-Split-Off Combined State/Local Tax Returns (other than the Pre-
     Split-Off Combined Kansas Tax Returns).

          (i)    In the event that the Company or any member of the Company
     Group (the "State Parent") is required to prepare and file a combined,
     unitary or other similar Return with a state (other than Kansas) or local
     Taxing Authority relating to a Pre-Split-Off Period in which any member of
     the Westar Group is required to be included (a "Pre-Split-Off Combined
     State/Local Tax Return"), the State Parent shall prepare and file such
     Return in accordance with the principals set forth in Section 2(e) hereof
     (and the parties shall make payments in accordance with the same principles
     as set forth in Section 2(e)(iv)) substituting the terms Combined
     State/Local Tax, Pro Forma State/Local Return, Preliminary State/Local Tax
     Return and Westar Combined State/Local Tax Allocation Statement for the
     terms Combined Kansas Tax, Pro Forma Kansas Return, Preliminary Kansas Tax
     Return and Westar Combined Kansas Tax Allocation Statement, respectively.
     Where possible, the Pro Forma State/Local Return or the Preliminary
     State/Local Tax Return shall be prepared making the elections and using the
     methods of accounting that are consistent with those made or used by the
     Company Consolidated Group on the Consolidated Federal Tax Return most
     recently filed with respect to a Tax period ending prior to the Split-Off
     Date unless the parties agree to make or use some other elections or
     methods of accounting (which agreement shall not be unreasonably withheld).

3    Consolidated, Combined, Unitary or Other Similar Tax Returns.
     ------------------------------------------------------------

     (a)  Federal Taxes. In its capacity as agent, the Company shall pay within
     the time and manner prescribed by law all Consolidated Federal Taxes due in
     connection with the filing of any Pre-Split-Off Consolidated Federal Tax
     Return.

     (b)  State or Local Taxes. The Company or the State Parent, as the case may
     be, shall pay within the time and manner prescribed by law all Combined
     Kansas Taxes or

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     Combined State/Local Taxes due in connection with the filing of any Pre-
     Split-Off Combined Kansas Tax Return or Pre-Split-Off Combined State/Local
     Tax Return.

     (c)  Amended Returns and Refunds.

          (i)    The Company shall not file or cause or permit any State Parent
     to file any amended Pre-Split-Off Consolidated Federal Tax Return, Pre-
     Split-Off Combined Kansas Tax Return or Pre-Split-Off Combined State/Local
     Tax Return if such Return results in an increase in the Tax liability
     attributable to any member of the Westar Group or any Westar Affiliate for
     any Tax period without the prior written consent of Westar (which consent
     shall not be unreasonably withheld).

          (ii)   The Company or the State Parent shall upon receipt of a written
     request by Westar file an amended Pre-Split-Off Consolidated Federal Tax
     Return, Pre-Split-Off Kansas Tax Return or Pre-Split-Off Combined
     State/Local Tax Return if such Return results in a decrease in the Tax
     liability attributable to any member of the Westar Group or any Westar
     Affiliate for any Taxable period and does not result in an increase in the
     Tax liability attributable to any member of the Company Group or any
     Company Affiliate for any Tax period (other than an increase for which it
     would be unreasonable to withhold consent).

          (iii)  Refunds.  Any refund of Tax or Tax credit received by the
     Company or any State Parent relating to a Pre-Split-Off Period, to the
     extent attributable to a decrease in the Westar share of such Tax shall be
     the property of Westar and shall be paid by the Company or such State
     Parent to Westar within 30 days of receipt of payment or other credit for
     such refund.  Upon such receipt or credit the Company or such State Parent
     shall provide to Westar within 5 Business Days a statement setting forth
     the amount of such refund together with any supporting documentation.  If
     the Company or such State Parent disputes the fact or the amount of any
     Westar claim, the Company or such State Parent shall pay the amount not in
     dispute, and no payment of the amount in dispute shall be required, until
     any such dispute is resolved in accordance with Section 15; provided,
     however, that any amount not paid within 30 days of receipt of the refund
     shall bear interest as provided in Section 6.

4    Other Taxes.
     -----------

     (a)  The responsibility for the filing of all Returns that have not been
     filed on or prior to the Split-Off Date relating to Taxes other than
     Consolidated Federal Taxes, Combined Kansas Taxes or Combined State/Local
     Taxes ("Other Taxes") attributable to any member of the Westar Group shall
     be the sole responsibility of the Westar Group. The responsibility for the
     filing of all Returns relating to such Other Taxes attributable to any
     member of the Company Group shall be the sole responsibility of the Company
     Group.

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     (b)  The Westar Group shall be entitled to all refunds and credits of Other
     Taxes attributable to any member of the Westar Group, and the Company Group
     shall be entitled to all refunds and credits of Other Taxes attributable to
     any member of the Company Group.

5    Indemnities.
     -----------

     (a)  Westar Indemnity. Westar and each member of the Westar Group shall
     jointly and severally indemnify the Company and each member of the Company
     Group against and hold them harmless from Westar's share of any
     Consolidated Federal Tax, Combined Kansas Tax or Combined State/Local Tax
     shown on any Pre-Split-Off Period Return filed after the Split-Off Date or
     assessed after the Split-Off Date pursuant to a Final Determination with
     respect to any Pre-Split-Off Period, to the extent not previously paid or
     credited to the Company, any member of the Company Group or any applicable
     Taxing Authority.

     (b)  Company Indemnity. The Company and each member of the Company Group
     shall jointly and severally indemnify Westar and each member of the Westar
     Group against and hold them harmless from any Consolidated Federal Tax,
     Combined Kansas Tax or Combined State/Local Tax liability for any
     Pre-Split-Off Period (including any Tax liability realized by Westar
     pursuant to Section 311(b) of the Code in connection with the Split-Off)
     other than any such liabilities described in Section 5(a) hereof.

     (c)  Discharge of Indemnity. Except as otherwise provided herein, Westar
     and each member of the Westar Group, and the Company and each member of the
     Company Group, shall discharge their obligations under Sections 5(a) and
     5(b) hereof, respectively, by paying the relevant amount within 30 days of
     demand therefor. Within 20 days of a Final Determination of an obligation
     of Westar and each member of the Westar Group under Section 5(a), the
     Company shall send a statement to Westar showing the amount due thereunder.
     Within 20 days of a Final Determination of an obligation of the Company and
     each member of the Company Group under Section 5(b), Westar shall send a
     statement to the Company showing the amount due thereunder. Calculation and
     payment mechanics relating to items described in Section 5(a) and (b) are
     set forth in Section 6. Notwithstanding the foregoing, and except as
     otherwise provided herein, if either Westar or the Company disputes in good
     faith the fact or the amount of its obligation under Section 5(a) or
     Section 5(b), such party shall pay the amount not in dispute, and no
     payment of the amount in dispute shall be required until any such good
     faith dispute is resolved in accordance with Section 15; provided, however,
     that any amount not paid within 30 days of demand therefor shall bear
     interest as provided in Section 6.

     (d)  Method of Calculation.  Except as otherwise provided, the amount of
     Westar's liability under Section 5(a) and the Company's liability under
     Section 5(b) shall be

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     calculated pursuant to the methods described in Schedule I hereto with
     adjustment as provided in Section 5(f).

     (e)  Duplicative Payments Not Required. Notwithstanding any other provision
     of this Agreement, no payment shall be required under this Section 5 to the
     extent it is duplicative of (i) any payment required by any other provision
     of this Agreement, or (ii) any explicit Tax indemnity provided in the
     Allocation and Separation Agreement, the Stock Purchase Option Agreement or
     the Merger Agreement, and any such payment(s) shall be made as required by
     such other provisions or agreements.

     (f)  If any increase in Tax for any period for which indemnification is
     provided under Section 5(a) or 5(b) gives rise to a Tax Asset to an
     indemnified party or its Affiliate, the amount of the indemnity payment
     shall be reduced by the present value of such Tax Asset computed as of the
     end of the Tax year with respect to which the indemnified Tax arises. For
     this purpose, the present value of the Tax Asset shall be computed by (x)
     treating the Tax Asset as utilized as and to the extent it first becomes
     available (e.g., as any increase in Tax basis could be depreciated) to
     reduce Tax at the maximum rate applicable for that Tax for the Tax year
     with respect to which the indemnified Tax arises and then (y) discounting
     the resulting Tax savings to present value using a discount rate of the
     higher of the Prime Rate or the interest rate applicable to deficiencies at
     the end of the Tax year with respect to which the indemnified Tax arises.

     (g)  After-Tax Amount.  Any indemnity payment made pursuant to this Section
     shall be increased by an amount equal to the product of (i) the amount of
     any indemnified Tax calculated without regard to this Section 5(g) and (ii)
     a fraction, the numerator of which is the highest applicable combined
     federal and state Tax rate in effect with respect to the person receiving
     the indemnity payment expressed as a decimal (the "Effective Tax Rate") and
     the denominator of which is one minus the Effective Tax Rate (the "After-
     Tax Amount").

6    Calculation and Payments of Amounts Due.
     ---------------------------------------

     (a)  Method of Calculation. Except as otherwise provided herein, Westar's
     share of any Consolidated Federal Tax, Combined Kansas Tax or Combined
     State/Local Tax, as the case may be, shall be calculated pursuant to the
     methods described in Schedule I hereto.

     (b)  Payments. Except as otherwise provided herein, all payments required
     by this Agreement shall be due 30 days after the payment by a party to a
     Taxing Authority or a receipt of a refund or credit by a party from a
     Taxing Authority, whichever is applicable, of the relevant item. All
     payments to be made hereunder shall be made in immediately available funds.
     Payments shall be deemed made when received.

                                       12
<PAGE>

     (c)  Interest. Any amount not paid when due under this Agreement shall bear
     interest at Prime until the date on which payment is made.

7    Communication and Cooperation.
     -----------------------------

     (a)  Consult and Cooperate. Westar and the Company shall consult and
     cooperate (and shall cause each of their Affiliates to cooperate) fully at
     such time and to the extent reasonably requested by the other party in
     connection with all matters subject to this Agreement. Such cooperation
     shall include, without limitation,

          (i)    the retention and provision on reasonable request of any and
     all information including all books, records, documentation or other
     information, any necessary explanations of information, and access to
     personnel, until the expiration of the applicable statute of limitation for
     additional assessments of Tax for the Tax period for which such document or
     other information arises (giving effect to any extension, waiver, or
     mitigation thereof);

          (ii)   within the limits otherwise set forth herein, the execution of
     any document that may be necessary or helpful in connection of any required
     Return or in connection with any audit, proceeding, suit or action; and

          (iii)  the use of the parties' best efforts to obtain any
     documentation from a governmental authority or a third party that may be
     necessary or helpful in connection with the foregoing.

     (b)  Provide Information. The Company and Westar shall keep each other
     fully informed with respect to any material development relating to all
     matters subject to this Agreement.

     (c)  Tax Attribute Matters. The Company and Westar shall advise and consult
     with each other with respect to any tax election or the tax treatment of
     any item (including the treatment of any item that would be affected by a
     proposed Tax adjustment relating to a Consolidated Federal Tax, Combined
     Kansas Tax or Combined State/Local Tax which is the subject of an audit or
     investigation, or are the subject of any proceeding or litigation) which
     could affect any Tax attribute of the other party or its Affiliate
     (including, but not limited to, basis in an asset or the amount of earnings
     and profits).

8    Audits and Contests.
     -------------------

     (a)  Notice.  The Company shall promptly notify Westar in writing of any
     inquiries from the Internal Revenue Service or any other Taxing Authority
     which relate or may relate to matters described in Sections 3(c) or 5(a).
     Westar shall promptly notify the Company in writing of any inquiries from
     the Internal Revenue Service or other Taxing Authority which relate or may
     relate to matters described in Section 3(c) or 5(b).  Each

                                       13
<PAGE>

     party shall forward to the other party relevant portions of any reports or
     other communications which relate to such matters.

     (b)  Settlement of Issues.  The Company shall not settle, compromise or
     otherwise resolve any Tax matter relating to Pre-Split-Off Taxes (a "Tax
     Settlement") without the prior written consent of Westar (which consent
     shall not be unreasonably withheld) if such Tax Settlement is reasonably
     likely to materially increase the Tax paid by Westar with respect to any
     Tax not subject to indemnification under Section 5(b); provided, however,
     that in the event that Westar does not consent and the Company believes
     that the withholding of consent was unreasonable, or the Company believes
     that no consent of Westar is required, the parties shall resolve their
     disagreement in accordance with Section 15.  The provisions of this Section
     8(b) shall continue to apply to any settlement of any proceeding to which
     Section 8(c) or 8(d) applies.

     (c)  Venue. In the event that a notice of deficiency (or similar notice) is
     received from the Internal Revenue Service or other Taxing Authority by any
     member of the Company Group for a Pre-Split-Off Period and such notice
     relates in whole or in part to a matter for which Westar would be entitled
     to withhold its consent under the standards set forth in Section 8(b) and
     for which the amount in controversy that is described in Section 5(a) is in
     excess of $75,000, then:

          (i)    Subject to the consent of the Company as to such venue (which
     consent shall not be unreasonably withheld) and to Westar giving the
     Company sufficient notice for the petition to be prepared and timely filed,
     Westar shall be entitled to have a petition filed in the United States Tax
     Court by the Company for those items causing the liability for which Westar
     would be required to indemnify the Company. Upon a Final Determination of
     any such petition, Westar shall pay to the Company in accordance with
     Section 6 the amount, if any, of resulting Tax for which Westar is required
     to provide indemnity pursuant to Section 5(a).

          (ii)   If (A) Westar does not request the Company to file a petition
     in the United States Tax Court for redetermination of the deficiency
     pursuant to Section 8(c)(i), (B) the Company does not, on its own
     initiative, timely file such a petition, and (C) Westar requests that the
     Company file a claim for refund, then, subject to the consent of the
     Company (which consent shall not be unreasonably withheld), the Company
     shall pay the deficiency, file a claim for refund thereof, and, if the
     claim is denied, bring an action in a court of competent jurisdiction
     seeking such refund; provided that, in such case, Westar shall pay to the
     Company, (I) on or before the date on which the deficiency is paid by the
     Company, the amount as if the notice of deficiency were a Final
     Determination (that Westar would otherwise be responsible for with respect
     to matters described in Section 5(a)) and any such payment shall be (a)
     credited against any payment required (with appropriate adjustment as
     provided in Section 6) in connection with a Final Determination if the
     result is an underpayment of Tax by Westar, or (b) treated as a refund
     pursuant to Section 3(c)(iii) if the amount is

                                       14
<PAGE>

     an overpayment due Westar, and (II) within 30 days of demand, any
     reasonable out-of-pocket costs incurred by the Company in the prosecution
     of such refund claim with respect to the matter Westar requests be
     contested.

     (d)  Judicial Appeals. In the event that a judgment of the United States
     Tax Court or other court of competent jurisdiction results in an adverse
     determination with respect to a matter described in Section 5(a) then,
     subject to Section 8(b):

          (i)    In the case of an appeal of an adverse determination which
     involves no material issues other than matters described in Section 5(a),
     Westar shall have the right to cause the Company to appeal from such
     adverse determination.

          (ii)   In the case of an appeal of any other adverse determination
     which involves material issues other than those described in Section 5(a),
     Westar shall have the right to cause the Company to appeal from such
     adverse determination if Westar delivers to the Company an opinion from an
     independent tax counsel selected by Westar and reasonably acceptable to the
     Company that it is more likely than not that such appeal will succeed and
     the amount in controversy exceeds $100,000.

          (iii)  In the case of an adverse determination which involves matters
     described in Section 5(b) and within such determination material matters
     described in Section 5(a) were favorably disposed, Westar shall have the
     right to prevent the Company from appealing from such adverse determination
     unless the Company delivers to Westar an opinion from an independent tax
     counsel selected by the Company and reasonably acceptable to Westar that it
     is more likely than not that such appeal will succeed.

          (iv)   If Westar causes the Company to appeal any adverse
     determination pursuant to this Section 8(d), Westar shall pay the
     reasonable out-of-pocket costs of the Company incurred in such appeal.

     (e)  Participation and Closing.

          (i)    Westar and its representatives, at Westar's expense, shall be
     entitled to attend and be represented in connection with all conferences,
     meetings, or proceedings with any Taxing Authority, the subject matter of
     which is or includes matters described in Section 5(a) provided that the
     amount of the total of annual proposed adjustment attributable to matters
     described in Section 5(a) is greater than $100,000.

          (ii)   Westar and its representatives, at Westar's expense, shall be
     entitled to attend and be represented in connection with all appearances
     before any court, the subject matter of which includes matter described in
     Section 5(a) provided that the amount of the total of annual proposed
     adjustments attributable to matters described in Section 5(a) is greater
     than $100,000.

                                       15
<PAGE>

          (iii)  The representation referred to in Sections 7(e)(i) and (ii)
     shall include the right to participate in the preparation of documentation,
     protests, memoranda of fact and law and briefs, oral arguments or
     presentations, stipulations of facts and the selection of witnesses with
     respect to a matter described in Section 5(a) and shall include the right
     to control such matters if the matters in controversy involve only matters
     described in Section 5(a). With respect to matters described in both
     Section 5(a) and 5(b), the parties agree to consult in good faith to
     determine the submission and content of documentation, protests, memoranda
     of fact and law and brief, the conduct of oral arguments and presentations,
     the selection of witnesses and the negotiation of stipulations of fact. If
     the parties cannot agree with respect to the matters described in the
     preceding sentence, such dispute shall be referred to the Referee and
     resolved in accordance with Section 15.

9    Notices.
     -------

     Any notice, demand, claim, or other communication under this Agreement
shall be in writing and shall be deemed to have been given upon the delivery or
two Business Days after mailing thereof, as the case may be, if delivered
personally or sent by express certified mail, return receipt requested, postage
prepaid, to the parties at the following addresses (or at such other address as
a party may specify by notice to the other):

     (a)  If to the Company, to:

          Western Resources, Inc.
          818 South Kansas Avenue
          Topeka, Kansas 66612
          Attention:  Richard D. Terrill
          Executive   Vice President and
                      General Counsel
          Facsimile:  (785) 575-1936

          with a copy to:

          LeBoeuf, Lamb, Greene & MacRae, L.L.P.
          1125 West 55th Street
          New York, NY 10019
          Attention:  William S. Lamb
          Facsimile:  (212) 424-8500

     (b)  If to Westar, to:

          Westar Industries, Inc.
          818 South Kansas Avenue
          Topeka, Kansas 66612
          Attention:  President
          Facsimile:  (785) 575-1936

                                       16
<PAGE>

          with a copy to:

          LeBoeuf, Lamb, Greene & MacRae, L.L.P.
          1125 West 55th Street
          New York, NY 10019
          Attention:  William S. Lamb
          Facsimile:  (212) 424-8500

          and with a copy to:

          Winthrop, Stimson, Putnam & Roberts
          One Battery Park Plaza
          New York, NY 10004
          Attention:  Timothy Toy
          Facsimile:  (212) 858-1500

10   Costs and Expenses.
     ------------------

     Except as expressly set forth in this Agreement, each party shall bear its
own costs and expenses incurred pursuant to this Agreement. For purposes of this
Agreement, "out-of-pocket" expenses shall include reasonable attorney fees,
accountant fees and other related professional fees and disbursements.

11   Effectiveness; Termination and Survival.
     ---------------------------------------

     This Agreement shall become effective upon the consummation of the Split-
Off. Notwithstanding anything in this Agreement to the contrary, this Agreement
shall remain in effect and its provisions shall survive for the full period of
all applicable statutes of limitation (giving effect to any extension, waiver or
mitigation thereof).

12   Section Headings.
     ----------------

     The headings contained in this Agreement are inserted for convenience only
and shall not constitute a part hereof or in any way affect the meaning or
interpretation of this Agreement.

13   Entire Agreement, Amendments and Waivers.
     ----------------------------------------

     (a)  Entire Agreement. This Agreement contains the entire understanding of
     the parties hereto with respect to the subject matter contained herein. No
     alteration, amendment, modification, or waiver of any of the terms of this
     Agreement shall be valid unless made by an instrument signed by an
     authorized officer of the Company and

                                       17
<PAGE>

     Westar, or in the case of a waiver, by the party against whom the waiver is
     to be effective.

     (b)  Waiver. No failure or delay by any party in exercising any right,
     power or privilege hereunder shall operate as a waiver hereof nor shall any
     single or partial exercise thereof preclude any other or further exercise
     thereof or the exercise of any right, power or privilege.

14   Governing Law and Interpretation.
     --------------------------------

     This Agreement has been made in and shall be construed and enforced in
accordance with the laws of the State of Kansas.

15   Dispute Resolution.
     ------------------

     (a)  CEOs/CFOs. If the parties hereto are unable to resolve any
     disagreement or dispute, except with respect to any matter described in
     Section 2(d), 2(e) or 2(f), either party may refer the matter to the Chief
     Executive Officers (CEOs) or Chief Financial Officers (CFOs) of the parties
     by giving the other party written notice ("Notice") within 60 days of the
     failure of the parties to resolve such dispute. Within 20 days after
     delivery of Notice, the CEOs or CFOs of both parties shall meet at a
     mutually acceptable time and place to exchange relevant information and
     attempt to resolve the dispute within 30 days after delivery of Notice. All
     negotiations pursuant to this Section 15(a) shall be confidential and shall
     be treated as compromise and settlement negotiations for purposes of the
     Federal Rules of Evidence and state rules of evidence.

     (b)  Referees. Any disagreement not resolved by mutual agreement of the
     parties or under Section 15(a) shall be resolved by an independent referee
     that is mutually acceptable to the parties hereto (a "Referee"). In the
     event the parties cannot agree on a Referee within 10 days of the date of
     the Notice described in paragraph (a) above (or 3 Business Days in the case
     of a matter described in Section 2(d), 2(e) or 2(f)), each party shall
     select within 5 days (2 Business Days in the case of a matter described in
     Section 2(d), 2(e) or 2(f)) an independent nationally recognized law firm
     or accounting firm expert in tax matters and such firms shall jointly
     choose the Referee. A Referee so chosen shall consider the magnitude and
     size of the item in question, the impact of the resolution on other Taxable
     periods of the Westar and the Company Groups and the likelihood of a
     Group's position ultimately prevailing, and otherwise shall resolve any
     such disagreement pursuant to such procedures as it may deem advisable. The
     Referee shall render its decision within 30 days (5 Business Days in the
     case of any matter described in Section 2(d), 2(e) or 2(f)) unless another
     time period is specified herein or is mutually agreed upon by the Company
     and Westar. Any such resolution shall be binding on the parties hereto
     without further recourse.

                                       18
<PAGE>

     (c)  Costs. The costs of any Referee shall be apportioned between the
     Company and Westar as determined by such Referee in such manner as the
     Referee deems reasonable, taking into account the circumstances of the
     dispute, the conduct of the parties and the result of the dispute.

16   Counterparts.
     ------------

     This Agreement may be executed in one or more counterparts, each of which
shall be deemed an original, but all of which together shall constitute one and
the same instrument.

17   Assignments; Third Party Beneficiaries.
     --------------------------------------

     This Agreement shall be binding upon and shall inure only to the benefit of
the parties hereto and their respective successors and assigns. Upon
consummation of the Merger, Parent shall succeed to the rights and obligations
of the Company under this Agreement. This Agreement is not intended to benefit
any person other than the parties hereto and such successors and assigns, and no
such other person shall be a third party beneficiary hereof.

                                       19
<PAGE>

     IN WITNESS WHEREOF, the parties have executed and delivered this Agreement
as of the day and year first written above.

                              Company on its own behalf and on
                              behalf of the companies
                              listed on Schedule 1 hereto.

                              By: ..................................

                              Title: ...............................

                              Westar on its own behalf and on
                              behalf of the companies
                              listed on Schedule 2 hereto.

                              By: ..................................

                              Title: ...............................

                                       20
<PAGE>

                                  Schedule I

1.  If a Consolidated Federal Tax, Combined Kansas Tax or Combined State/Local
    Tax liability is assessed after the Split-Off Date pursuant to a Final
    Determination, to the extent that such Tax liability is attributable to an
    adjustment of any item of income, loss, credit deduction or other Tax
    attribute of any member of the Westar Group, then such liability shall be
    the sole responsibility of the Westar Group.

2.  In preparing a Pro Forma Federal, Kansas or State/Local Return, or a
    Preliminary Federal, Kansas or State/Local Return, the "closing of the
    books" method shall be used so that Tax liability will be calculated on the
    basis of actual Taxable income to the Closing Date as if the Tax year of
    each member and Affiliate of the Westar Group terminated on the Split-Off
    Date. Any real or personal property Tax for a period shall be attributed to
    the Pre-Split-Off Period on the basis of the number of days in such Pre-
    Split-Off Period to the total number of days in such entire period. Any
    adjustment required by Section 481 of the Code (including adjustments for
    marking receivables to market) shall be allocated to the deductions or
    credits (or lack thereof) giving rise to the Section 481 adjustment.

3.  The Westar Group's allocable share of any Consolidated Federal Tax
    liability, Combined Kansas Tax or Combined State/Local Tax liability, as the
    case may be, for any Pre-Split-Off Period shall be (a) calculated on a
    separate return basis (i.e., as if the Westar Group had filed a separate
    Return for such period), and (b) reduced by the amount of any Tax savings to
    the Company Group resulting from the utilization during that period of a
    Westar Group Tax Asset. If the amount of the Westar Group's share of any
    Consolidated Federal Tax, Combined Kansas Tax or Combined State/Local Tax
    liability, as the case may be, determined pursuant to the preceding
    sentence, is a negative amount, such amount shall be treated as an
    overpayment of Tax by the Westar Group.

4.  For purposes of paragraphs 1 and 2 above, "Tax liability" (a) shall exclude
    any liability for the payment of alternative minimum Tax, if applicable; and
    (b) shall refer to an actual out-of-pocket payment to any Taxing Authority,
    after taking into account the utilization of net operating losses and any
    other Tax Assets.

5.  Any alternative minimum Tax liability (and any Tax Assets attributable to
    such liability), if applicable, shall be allocated to Westar in the event
    that the preference items giving rise to such alternative minimum Tax
    liability are attributable to any member of the Westar Group, and shall be
    allocated to the Company in the event that the preference items giving rise
    to such alternative minimum Tax liability are attributable to any member of
    the Company Group.<PAGE>

                                                                    Exhibit 10.7

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

                                    Form of

                        STOCK PURCHASE OPTION AGREEMENT

                                      for

                            WESTAR GENERATING, INC.

                                    between

                            WESTERN RESOURCES, Inc.,

                                      and

                            WESTAR INDUSTRIES, inc.

                                  Dated as of

                               ___________, 200_

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

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                      Page
                                                                                      ----
<S>                                                                                   <C>
ARTICLE I DEFINITIONS................................................................   2
     Section 1.1.   Definitions......................................................   2

ARTICLE II OPTION TO PURCHASE INTERESTS..............................................   6
     Section 2.1.   Option to Purchase the Company Stock.............................   6
     Section 2.2.   Exercise of Option and Closing...................................   6
     Section 2.3.   Option Period....................................................   7
     Section 2.4.   Seller Support Obligations.......................................   7
     Section 2.5.   Net Book Value Adjustment to Purchase Price......................   8
     Section 2.6.   Adjustment to Purchase Price - Section 338(h)(10) Election.......   9

ARTICLE III REPRESENTATIONS AND WARRANTIES OF SELLER RELATING TO
                    SELLER AND THE COMPANY...........................................  10
     Section 3.1.   Organization, Standing and Power.................................  10
     Section 3.2.   Capitalization of the Company....................................  10
     Section 3.3.   Authority Relative to this Agreement.............................  10
     Section 3.4.   No Conflict or Violation; Consents and Approvals.................  11
     Section 3.5.   Financial Statements.............................................  11
     Section 3.6.   Absence of Certain Changes.......................................  11
     Section 3.7.   Compliance with Law..............................................  12
     Section 3.8.   Permits..........................................................  12
     Section 3.9.   Litigation.......................................................  12
     Section 3.10.  Taxes............................................................  12
     Section 3.11.  Environmental Matters............................................  13
     Section 3.12.  Brokers and Finders..............................................  13

ARTICLE IV REPRESENTATIONS AND WARRANTIES OF THE BUYER...............................  13
     Section 4.1.   Organization Standing and Power..................................  13
     Section 4.2.   Authority Relative to this Agreement.............................  13
     Section 4.3.   No Conflict or Violation; Consents and Approvals.................  14
     Section 4.4.   Legal Proceedings................................................  14
     Section 4.5.   Brokers and Finders..............................................  14

ARTICLE V TAX MATTERS................................................................  14
     Section 5.1.   Tax Matters......................................................  14

ARTICLE VI COVENANTS.................................................................  18
     Section 6.1.   Conduct of the Business Pending the Closing......................  18
     Section 6.2.   Consents and Approvals...........................................  19
     Section 6.3.   Filings..........................................................  20
     Section 6.4.   Covenant to Satisfy Conditions...................................  20
     Section 6.5.   Further Assurances...............................................  20
     Section 6.6.   Maintenance of Stock Free of Encumbrances........................  20
</TABLE>

                                      ii
<PAGE>

<TABLE>
<CAPTION>

<S>                                                                                <C>
     Section 6.7.   Maintenance of Project...........................................  20
     Section 6.8.   Risk of Loss.....................................................  21
     Section 6.9.   1935 Act and 1940 Act............................................  21
     Section 6.10.  Limitation.......................................................  21

ARTICLE VII CONDITIONS TO EACH PARTY'S OBLIGATIONS...................................  21
     Section 7.1.   Regulatory Approvals.............................................  21
     Section 7.2.   HSR Act..........................................................  21
     Section 7.3.   1940 Act.........................................................  21

ARTICLE VIII CONDITIONS TO THE SELLER'S OBLIGATIONS..................................  22
     Section 8.1.   Representations and Warranties of the Buyer True.................  22
     Section 8.2.   Performance......................................................  22
     Section 8.3.   Certificates.....................................................  22
     Section 8.4.   No Injunction or Proceeding......................................  22
     Section 8.5.   Seller Support Obligations.......................................  22
     Section 8.6.   Opinion of Counsel...............................................  22

ARTICLE IX CONDITIONS TO THE BUYER'S OBLIGATIONS.....................................  22
     Section 9.1.   Representations and Warranties of the Seller True................  22
     Section 9.2.   Performance by the Seller........................................  23
     Section 9.3.   Certificates.....................................................  23
     Section 9.4.   No Injunction or Proceeding......................................  23
     Section 9.5.   No Material Adverse Effect.......................................  23
     Section 9.6.   Power Purchase Agreement.........................................  23
     Section 9.7.   Third Party Consents.............................................  23

ARTICLE X TERMINATION AND ABANDONMENT; INDEMNIFICATION...............................  23
     Section 10.1.  Termination......................................................  23
     Section 10.2.  Procedure and Effect of Termination..............................  24
     Section 10.3.  Survival of Representations and Warranties.......................  24
     Section 10.4.  Indemnification..................................................  24

ARTICLE XI ADDITIONAL AGREEMENTS.....................................................  26
     Section 11.1.  No EWG...........................................................  26

ARTICLE XII MISCELLANEOUS............................................................  26
     Section 12.1.  Waivers and Amendments...........................................  26
     Section 12.2.  Entire Agreement; Assignment.....................................  26
     Section 12.3.  Validity.........................................................  26
     Section 12.4.  Notices..........................................................  26
     Section 12.5.  Governing Law....................................................  28
     Section 12.6.  Publicity........................................................  28
     Section 12.7.  Jurisdiction; Forum..............................................  28
     Section 12.8.  Descriptive Headings.............................................  28
     Section 12.9.  Counterparts.....................................................  28
     Section 12.10. Expenses.........................................................  28
</TABLE>
                                      iii
<PAGE>

<TABLE>
<CAPTION>
<S>                                                                                <C>
     Section 12.11. Parties in Interest..............................................  28
     Section 12.12. Interpretation...................................................  29
</TABLE>

SCHEDULES
     Schedule 2.5(c)  Reference Statement of Net Book Value
     Schedule 3.9     Litigation

EXHIBITS
     Exhibit A        Power Purchase Agreement

                                      iv
<PAGE>

                        STOCK PURCHASE OPTION AGREEMENT

          This STOCK PURCHASE OPTION AGREEMENT (this "Agreement") dated as of
this _______ day of _______, 200_ is made by and between Western Resources,
Inc., a Kansas corporation (the "Seller"), and Westar Industries, Inc., a Kansas
corporation (the "Buyer").

                                   RECITALS:

          WHEREAS, Seller, Public Service Company of New Mexico, a New Mexico
corporation ("PNM"), HVOLT Enterprises, Inc., a Delaware corporation ("Parent"),
HVK, Inc., a Kansas corporation and a wholly-owned subsidiary of Parent ("Merger
Sub") and HVNM, Inc. have entered into an Agreement and Plan of Restructuring
Merger dated as of November 8, 2000 (as heretofore amended, the "Merger
Agreement");

          WHEREAS, Seller and Buyer have entered into an Asset Allocation and
Separation Agreement dated as of November 8, 2000 (the "Split Off Agreement"),
providing for the split-off by Seller to its shareholders of all of the common
stock of Buyer held by Seller (the "Split-Off ");

          WHEREAS, the Seller owns all of the shares of capital stock of Westar
Generating, Inc., a Kansas corporation (the "Company"); and

          WHEREAS, the Company is a party to that certain Agreement for the
Construction, Ownership and Operation of State Line Combined Cycle Generating
Facility (the "Project Agreement") dated as of July 26, 1999 by and among The
Empire District Electric Company, as an Owner, the Company, as an Owner and The
Empire District Electric Company, as an Agent, pursuant to which the Company
owns an undivided 40% ownership interest in the State Line Combined Cycle
Generating Facility (the "Project") and a 33 1/3% interest in certain other real
property described in the Project Agreement; and

          WHEREAS, Buyer, absent an exemption therefrom may be required to
register under the Investment Company Act of 1940 (the "1940 Act"); and

          WHEREAS, Buyer may need to rely on the permanent exemption to
registration provided in the 1940 Act for persons that have registered as
holding companies under the Public Utility Holding Company Act of 1935 (the
"1935 Act"); and

          WHEREAS, in order to allow it to register under the 1935 Act, Buyer
desires to purchase from Seller all of the shares of capital stock of the
Company, on the terms and subject to the conditions herein contained, and the
Seller has agreed to sell such interests on such terms and subject to such
conditions; and

          WHEREAS, Seller desires to indemnify the Buyer under certain
circumstances in accordance with the terms of this Agreement;

          NOW THEREFORE, in consideration of the recitals and the mutual
covenants contained herein and of other good and valuable consideration, the
receipt and sufficiency of
<PAGE>

which are hereby acknowledged, the parties hereto, intending to be legally
bound, agree as follows:

                                   ARTICLE I

                                  DEFINITIONS

          Section I.1.  Definitions.
                        -----------

          (a) The terms defined in this Article I, whenever used herein, shall
have the following meanings for all purposes of this Agreement.

          "Additional Taxes" shall have the meaning set forth in Section 2.6
hereof.

          "Affiliate" shall have the meaning set forth in Rule 12b-2 promulgated
under the Exchange Act.

          "Agreement" shall mean this Stock Purchase Option Agreement together
with the Schedules and Exhibit hereto.

          "Allocation Agreement" shall have the meaning set forth in the
recitals.

          "Business Day" means any day other than a Saturday, Sunday or one on
which banks are authorized or required by law to close in New York, New York.

          "Buyer" shall have the meaning set forth in the preamble hereto.

          "Buyer Disclosure Schedule" shall have the meaning set forth in
Article IV hereof.

          "Buyer Indemnified Parties" shall have the meaning set forth in
Section 10.4(a) hereof.

          "Buyer Material Adverse Effect" shall have the meaning set forth in
Section 4.1 hereof.

          "CERCLA" shall mean the Comprehensive Environmental Response,
Compensation and Liability Act of 1980, as amended.

          "Closing" shall have the meaning set forth in Section 2.2(a) hereof.

          "Closing Date" shall have the meaning set forth in Section 2.2(a)
hereof.

          "Closing Date Statement of Net Book Value" shall have the meaning set
forth in Section 2.5(c) hereof.

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

          "Company" shall have the meaning set forth in the recitals hereto.

                                       2
<PAGE>

          "Company Stock" shall have the meaning set forth in Section 3.2(a)
hereof.

          "Damages" shall mean any cash, out-of-pocket liabilities, costs or
expenses (including reasonable attorneys' fees), judgments, fines, losses,
claims, damages and amounts paid in settlement, except to the extent caused by
the negligence, willful misconduct or fraud of an Indemnified Party; provided
however, Damages shall not include consequential damages other than those
awarded to a third party against an Indemnified Party.

          "Deductible Amount" shall have the meaning set forth in Section
10.4(c) hereof.

          "DOJ" shall mean the Antitrust Division of the United States
Department of Justice, or any successor agency.

          "Effective Tax Rate" shall have the meaning set forth in Section
5.1(h) hereof.

          "Encumbrance" shall mean any lien, encumbrance, security interest,
charge, mortgage, option, pledge or restriction on transfer of any nature
whatsoever (except, in the case of the Company Stock, for restrictions relating
to applicable securities laws).

          "Environmental Claim" means any pending claim, action, demand, order,
or written notice by or on behalf of, any Governmental Entity or other Person
alleging potential liability based on any Environmental Law or environmental
permit.

          "Environmental Laws" shall mean all federal, state, and local laws and
regulations relating to Releases or threatened Releases of oil or Hazardous
Materials or otherwise relating to the generation, treatment, storage, transport
or handling of oil or Hazardous Materials.

          "Exchange Act" shall mean the Securities Exchange Act of 1934, as
amended.

          "FERC" shall mean the Federal Energy Regulatory Commission, or any
successor agency.

          "FTC" shall mean the Federal Trade Commission, or any successor
agency.

          "Final Determination" shall mean (i) with respect to Federal Taxes,
(A) a "determination" as defined in Section 1313(a) of the Code, or (B) the date
of acceptance by or on behalf of the Internal Revenue Service of Form 870-AD (or
any successor form thereto), as a final resolution of Federal Tax liability for
any Taxable period, except that a Form 870-AD (or successor form thereto) that
reserves the right of the taxpayer to file a claim for refund and/or the right
of the Internal Revenue Service to assert a further deficiency shall not
constitute a Final Determination with respect to the item or items so reserved;
(ii) with respect to Taxes other than Federal Taxes, any final determination of
liability in respect of a Tax provided for under applicable law; (iii) any final
disposition by reason of the expiration of the applicable statute of
limitations; and (iv) the payment of Tax by the Company, Seller or Buyer or any
Affiliate thereof, whichever is responsible for payment of such Tax under
applicable law, with respect to any item disallowed or adjusted by a Taxing
Authority, provided that the provisions of Section 5.1 hereof have been complied
with, or, if such section is inapplicable, that the party responsible under the
terms of this Agreement for such Tax is notified by the party paying such Tax
that it

                                       3
<PAGE>

has determined that no action should be taken to recoup such disallowed item,
and the other party agrees with such determination.

          "GAAP" shall mean United States generally accepted accounting
principles as in effect on the date or for the period with respect to which such
principles are applied.

          "Governmental Entity" shall have the meaning set forth in Section 3.4
hereof.

          "Hazardous Materials" shall mean all substances defined as hazardous
substances in CERCLA.

          "HSR Act" shall mean the Hart-Scott-Rodino Antitrust Improvements Act
of 1976, as amended.

          "Indemnified Party" shall have the meaning set forth in Section
10.4(g) hereof.

          "Indemnifying Party" shall have the meaning set forth in Section
10.4(g) hereof.

          "IRS" means the United States Internal Revenue Service.

          "Material Adverse Effect" shall have the meaning set forth in Section
3.1 hereof.

          "Net Book Value" shall have the meaning set forth in Section 2.5(b)
hereof.

          "Notifying Party" shall have the meaning set forth in Section 5.1(d).

          "Option" shall have the meaning set forth in Section 2.1.

          "Overlap Period" shall have the meaning set forth in Section 5.1(b)
hereof.

          "Overlap Period Taxes" shall have the meaning set forth in Section
5.1(b) hereof.

          "Participation Notice" shall have the meaning set forth in Section
5.1(d).

          "Permits" shall have the meaning set forth in Section 3.8 hereof.

          "Person" shall mean any individual, partnership, joint-stock company,
joint venture, corporation, limited liability company, trust or unincorporated
organization, or a Governmental Agency or political subdivision thereof.

          "Pre-Closing Taxes" shall have the meaning set forth in Section 5.1(b)
hereof.

          "Project" shall have the meaning set forth in the recitals hereto.

          "Project Agreements" means the Project Agreement and the Transaction
Documents.

          "Prudent Utility Practice" means, at a particular time, any of the
applicable practices, methods and acts engaged in or approved by a significant
portion of the electric utility

                                       4
<PAGE>

industry during the relevant time period prior to such time, or any of the
practices, methods and acts which, in the exercise of reasonable judgment in
light of the facts known at the time the decision was made, could have been
expected to accomplish the desired result when viewed in the context of the
overall objectives sought to be obtained, consistent with good business
practices, reliability, safety, and expedition. Prudent Utility Practice is not
intended to be limited to the optimum practice, method, or act to the exclusion
of all others but rather to a spectrum of practices, methods, or acts having due
regard for, among other things, manufacturers' warranties and the requirements
of governmental agencies of competent jurisdiction.

          "Purchase Price" shall have the meaning set forth in Section 2.1
hereof.

          "Reference Statement of Net Book Value" shall have the meaning set
forth in Section 2.5(c) hereof.

          "Representative" shall mean, with respect to any Person, each of such
Person's directors, officers, employees, representatives and agents.

          "Section 338(h)(10) Election" shall have the meaning set forth in
Section 2.6 hereof.

          "Securities Act" shall mean the Securities Act of 1933, as amended.

          "Seller" shall have the meaning set forth in the preamble hereto.

          "Seller Disclosure Schedule" shall have the meaning set forth in
Article III hereof.

          "Seller Indemnified Parties" shall have the meaning set forth in
Section 10.4(b) hereof.

          "Seller Support Obligations" shall have the meaning set forth in
Section 2.4 hereof.

          "Tax"  (and the correlative meaning, "Taxes", "Taxing" and "Taxable")
shall mean (i) any net income, gross income, gross receipts, alternative or add-
on minimum, sales, use, ad valorem, franchise, profits, license, withholding,
payroll, employment, excise, transfer, recording, severance, stamp, occupation,
premium, property, environmental, custom duty, or other tax, governmental fee or
other like assessment or charge of any kind whatsoever, together with any
interest and any penalty, addition to Tax or additional amount imposed by a
Taxing Authority; (ii) Person (or, in each case, any predecessor or successor in
interest thereto by merger or otherwise), as the case may be, for the payment of
any amounts of the type described in clause (i) for any Taxable period resulting
from the application of Treasury Regulation Section 1.1502-6 or, in the case of
any similar provision applicable under state, local or foreign law; and (iii)
any liability of a Person (or, in each case, any predecessor or successor in
interest thereto by merger or otherwise) for the payment of any amounts
described in clause (i) as a result of any express or implied obligation to
indemnify any other party.

          "Tax Asset" shall mean any net operating loss, net capital loss,
investment Tax credit, foreign Tax credit, charitable deduction or any other
credit or Tax attribute, including

                                       5
<PAGE>

additions to basis of property, which could reduce Federal Taxes including,
without limitation, deductions, credits, or alternative minimum net operating
loss carryforwards related to alternative minimum Taxes.

          "Tax Claims" shall mean any claims, actions, causes of action,
liabilities, losses, damages, deficiencies, judgments, settlements, costs and
expenses whatsoever (including reasonable out-of-pocket expenses and reasonable
attorneys' fees), whether or not resulting from third party claims, relating to
Taxes.

          "Tax Controversy" shall have the meaning set forth in Section 5.1(d).

          "Tax Controversy Issue" shall have the meaning set forth in Section
5.1(d).

          "Tax Controversy Notice" shall have the meaning set forth in Section
5.1(d).

          "Tax Return" shall mean any return, report, statement, information or
other document, including any amendment thereto filed or to be filed or supplied
to any federal, state, or local Tax authority or any other government entity
with respect to Taxes, including, where permitted or required, combined or
consolidated returns for any group of entities.

          "Transaction Documents" shall mean the State Line Documents (as
defined in the Power Purchase Agreement referenced in Section 9.6 hereof).

          "Transaction Regulatory Approvals" shall mean all regulatory approvals
required to consummate the transactions contemplated hereby.

          "Transfer Taxes" shall have the meaning set forth in Section 5.1(a)
hereof.

          (b)  As used in this Agreement, references to the "knowledge" of any
Person shall mean the actual knowledge of the executive officers of such Person
and of the senior employees of such Person responsible for the area of
operations of such Person to which such Person's knowledge relates.

          (c)  Capitalized terms used herein without definition shall have the
respective meanings specified in the Project Agreement.

                                  ARTICLE II

                         OPTION TO PURCHASE INTERESTS

          Option to Purchase the Company Stock. The Seller hereby grants to
Buyer an irrevocable one-time option (the "Option") to purchase, upon the terms
and subject to the satisfaction or waiver, if permissible, of the conditions set
forth herein, from the Seller, free and clear of all Encumbrances, the Company
Stock for a purchase price (subject to adjustment pursuant to Section 2.5) equal
to the Reference Statement of Net Book Value as adjusted pursuant to Section 2.5
and 2.6 (as so adjusted, the "Purchase Price").

          Exercise of Option and Closing.

                                       6
<PAGE>

          (a) In the event that (i)  Buyer is unable to obtain a permanent
exemption to registration under the 1940 Act prior to the receipt of the
required shareholder approvals and other regulatory approvals under the Merger
Agreement, (ii) the 1940 Act remains in full force and effect and would impose
materially burdensome terms and conditions on Buyer as a registrant under such
Act, (iii) registration as a holding company under the 1935 Act provides a
permanent exemption to registration under the 1940 Act, and (iv) the Buyer shall
have complied in all material respects with the provisions of Section 6.9
hereof, the Buyer may exercise the Option by delivery of written notice of
exercise to Seller prior to the expiration of the Option.   The closing of the
transactions contemplated by this Agreement (the "Closing") shall be held at
10:00 a.m. on the third Business Day following the later of (i) delivery of
written notice of exercise of the Option by Buyer to Seller and (ii)
satisfaction of the conditions precedent to the sale and purchase of the Company
Stock, to be effective as of such day, at the offices of LeBoeuf, Lamb, Greene &
MacRae, L.L.P. in New York, New York, or at such other time, date or place as
the parties may mutually agree (hereinafter referred to as the "Closing Date").

          (b) At the Closing, the Seller shall deliver the following to the
Buyer:

               (i)      stock certificate(s) duly endorsed or accompanied by
                        stock powers duly endorsed in blank with appropriate
                        transfer stamps, if any, affixed thereto, representing
                        the Company Stock;

               (ii)     the certificates contemplated by Section 9.3 hereof; and

               (iii)    all other documents required to be delivered by the
                        Seller on or prior to the Closing Date pursuant to this
                        Agreement.

          (c) At the Closing, the Buyer shall deliver to the Seller:

               (i)      the Purchase Price;

               (ii)     the certificates contemplated by Section 8.3 hereof; and

               (iii)    all other documents required to be delivered by the
                        Buyer on or prior to the Closing Date pursuant to this
                        Agreement.

          (d) All payments to be made by the Buyer pursuant to this Section 2
shall be made by wire transfer of immediately available funds to such bank
account or bank accounts designated by the Seller at least two Business Days
prior to the Closing Date or otherwise provided in Section 2.2.

          Option Period. The Option may be exercised at any time during the
period commencing on the date hereof, and expiring on the third anniversary
hereof; provided, however, if Buyer remains in compliance with Section 6.9
hereof, the exercise period may be extended no more than twice at the option of
Buyer for additional one year periods by delivering notice to Seller at least 90
days prior to the expiration of the Option.

          Seller Support Obligations. The Buyer and Seller agree to cooperate in
obtaining the release of Seller from any financial support or other financial
obligations to the Company or

                                       7
<PAGE>

the Project (the "Seller Support Obligations"). At the Closing, the Buyer shall
take all necessary action, including the furnishing of credit support, to obtain
the release of the Seller from all liability and obligation with respect to the
Seller Support Obligations at the Closing.

          Net Book Value Adjustment to Purchase Price.
          -------------------------------------------

          (a) The Purchase Price shall be increased by the amount that the Net
Book Value set forth on the Closing Date Statement of Net Book Value exceeds the
Net Book Value set forth on the Reference Statement of Net Book Value, or
decreased by the amount that the Net Book Value set forth on the Closing Date
Statement of Net Book Value is less than the Net Book Value set forth on the
Reference Statement of Net Book Value, as the case may be.

          (b) As used in this Agreement, "Net Book Value" means assets less
liabilities as reflected on the relevant Statement of Net Book Value.  For
purposes of such calculation, assets shall be the sum of current assets
(including cash and short term investments, accounts receivable, intercompany
receivables, prepaid expenses), property, plant and equipment and other assets
as set forth in Schedule 2.5(c).  Liabilities shall be the sum of current
liabilities (including accounts payable, accrued expenses, accrued income taxes,
intercompany payables) and other liabilities as set forth in Schedule 2.5(c).
All of the foregoing calculations shall be made in conformity with the
applicable system of  FERC accounts.

          (c) For purposes of this Agreement, "Reference Statement of Net Book
Value" means the pro forma calculation of the Net Book Value of the Company as
of September 30, 2000 made in accordance with Section 2.5(b) and set forth on
Schedule 2.5(c), and "Closing Date Statement of Net Book Value" means the
calculation of the Net Book Value of the Company as of the close of business on
the day prior to the Closing Date made in accordance with Section 2.5(b) and
from which the calculation of the adjustment to the Purchase Price will be made
in accordance with Section 2.5(a) hereof.

          (d) Within 45 days following the Closing Date, the Seller shall
prepare and deliver to the Buyer the Closing Date Statement of Net Book Value
prepared by the Seller in accordance with the applicable system of FERC
accounts.  The Closing Date Statement of Net Book Value shall be prepared by the
Seller in good faith and shall be certified by the Seller to be, as of the date
prepared, its good faith estimate of the amounts reflected thereon.

          (e) The Seller shall provide the Buyer with a preliminary draft of the
Closing Date Statement of Net Book Value within 30 days following the Closing
Date.  The Buyer shall allow the Seller and its agents access at all reasonable
times after the Closing to copies of the books, records and accounts of the
Company and make available to the Seller such information as the Seller
reasonably requests to allow the Seller to prepare the Closing Date Statement of
Net Book Value.  The Buyer and the Seller will in good faith attempt to resolve
any disputes with respect to such calculation before the final Closing Date
Statement of Net Book Value is rendered.

          (f) The Buyer shall give written notice to the Seller of any objection
to the Closing Date Statement of Net Book Value within 30 days after the Buyer's
receipt of the final statement pursuant to Section 2.5(d).  The notice shall
specify in reasonable detail the items in

                                       8
<PAGE>

the Closing Date Statement of Net Book Value to which the Buyer objects and
shall provide a summary of the Buyer's reasons for such objections.

          (g) Any dispute between the Buyer and the Seller with respect to the
Closing Date Statement of Net Book Value which is not resolved within 45 days
after receipt by the Seller of the written notice from the Buyer shall be
referred for decision to a nationally recognized accounting firm selected by the
Seller and reasonably acceptable to the Buyer which is not engaged in providing
services to the Seller or the Buyer or any of their Affiliates to decide the
dispute within 30 days of such referral.  The decision by the accounting firm
shall be final and binding on the Seller and the Buyer.  The cost of retaining
the accounting firm with respect to resolving disputes as to the Closing Date
Statement of Net Book Value shall be borne by the Seller and the Buyer as
determined by the award of the accounting firm.

          (h) Following delivery of the Buyer's written notice of objections to
the Closing Date Statement of Net Book Value, any balance due to the Seller or
refund due to the Buyer pursuant to the adjustments set forth in Section 2.5(a)
that is not in dispute shall be paid within ten (10) days of such delivery (and
any payment in respect of any amount in dispute shall be paid within 10 days of
the resolution of such dispute) together with interest on each payment amount
from the Closing Date to the date of payment at 7% per annum, in immediately
available funds to an account designated by the Seller or the Buyer, as the case
may be, at least 2 days before the payment is due.

          Adjustment to Purchase Price - Section 338(h)(10) Election. If Buyer
requests Seller to join with Buyer in making an election pursuant to section
338(h)(10) of the Code (the "Section 338(h)(10) Election"), Buyer shall pay to
Seller any Additional Taxes directly resulting from the Section 338(h)(10)
Election that are in excess of the Taxes that would have been incurred by Seller
if Seller instead were to have sold all the Company Stock without effecting a
Section 338(h)(10) Election. For purposes of this Section 2.5, "Additional
Taxes" means the net amount of any Taxes incurred by Company, Seller or Seller's
Affiliates that are in excess of the Taxes that would have been incurred by
Company, Seller and Seller's Affiliates if Seller instead were to have sold all
the Company Stock without effecting the Section 338(h)(10) Election (including
any Taxes imposed on the increase in the Purchase Price pursuant to this Section
2.6). For purposes of computing Additional Taxes, Taxes shall be computed at the
highest applicable marginal rate, and it shall be assumed that neither Seller
nor any of its Affiliates had any items of income, gain, loss, or deduction or
credit, including net operating losses and carryovers, other than that resulting
from the transactions contemplated by this Agreement. Not later than 60 days
after Seller files its federal and state income Tax Returns for the period which
includes the Closing Date, Seller shall give notice (the "Calculation Notice")
to Buyer of its calculation of the payment to be made by Buyer pursuant to this
Section 2.6, which Calculation Notice shall include (i) a detailed explanation
of the calculation and all workpapers supporting such calculation and (ii) wire
transfer instructions for such payment, if any. Seller shall promptly make
available to Buyer such information as Buyer reasonably requests to allow Buyer
to examine the accuracy of such calculation. Buyer shall pay the amount shown on
the Calculation Notice by wire transfer of immediately available funds to Seller
within 20 days of receipt by Buyer of the Calculation Notice; provided, however,
that if Buyer disputes the calculation set forth in the Calculation Notice,
Buyer shall pay any undisputed amount and give written notice to Seller of any
objection to such calculation within 20 days following receipt by Buyer of the

                                       9
<PAGE>

Calculation Notice, which notice shall specify in reasonable detail the items in
such calculation to which Buyer objects and shall provide a summary of Buyer's
reasons for such objections. Any dispute between Buyer and Seller with respect
to such calculation shall be resolved in accordance with the procedures set
forth in Section 2.5(g) and any payment in respect of any amount in dispute
shall be paid within 10 days of the resolution of such dispute together with
interest on such payment amount from the date of receipt by Buyer of the
Calculation Notice.

                                  ARTICLE III
               REPRESENTATIONS AND WARRANTIES OF SELLER RELATING
                           TO SELLER AND THE COMPANY

          Seller hereby represents and warrants to the Buyer as follows:

          Organization, Standing and Power. Each of Seller and the Company is
duly organized, validly existing and in good standing under the laws of the
jurisdiction of its organization and has all requisite power and authority to
conduct its business as it is now being conducted and to own, lease and operate
its property and assets, except where the failure to be so organized, existing
and in good standing or to have such power or authority will not, in the
aggregate, either (i) have a material adverse effect on the business, results of
operations, assets or financial condition of the Company or the Project, or (ii)
materially impair the ability of Seller to perform its material obligations
under this Agreement (either of such effects, a "Material Adverse Effect"). The
Company is qualified or licensed to do business as a foreign corporation or
company and is in good standing in each jurisdiction in which ownership of
property or the conduct of its business requires such qualification or license,
except where the failure to be so qualified or licensed will not have a Material
Adverse Effect.

          Section III.2.  Capitalization of the Company.
                          -----------------------------

          (a) The authorized equity capital of the Company consists of 1000
shares of common stock, no par value per share, of which 1000 shares have been
issued (the "Company Stock") and are held beneficially and of record by Seller.
All of the shares of Company Stock are duly authorized, validly issued, fully
paid and non-assessable and free of any preemptive rights in respect thereto.

          (b) There are no outstanding (i) securities convertible into or
exchangeable for the equity capital of the Company, (ii) options, warrants or
other rights to purchase or subscribe for equity capital of the Company or (iii)
contracts, commitments, agreements, understandings or arrangements of any kind
relating to the issuance of any equity capital of the Company or any such
convertible or exchangeable securities or any such options, warrants or rights,
pursuant to which, in any of the foregoing cases, the Company is subject to or
bound.

          (c) Upon delivery of the Company Stock against payment of the Purchase
Price by the Buyer in accordance with Section 2 of this Agreement, valid and
marketable title to the Company Stock, free and clear of any Encumbrance will
pass to the Buyer.

          Authority Relative to this Agreement. The Seller has all requisite
corporate authority and power to execute and deliver this Agreement and to
consummate the transactions

                                       10
<PAGE>

contemplated hereby. The execution and delivery of this Agreement and the
consummation of the transactions contemplated hereby, as of the date hereof,
will have been duly and validly authorized by all required action on the part of
the Seller and no other proceedings on the part of the Seller, including
approval of the board of directors of Seller, are necessary to authorize this
Agreement or to consummate the transactions contemplated hereby. This Agreement
has been duly and validly executed and delivered by the Seller and, assuming
this Agreement has been duly authorized, executed and delivered by the Buyer,
this Agreement constitutes a valid and binding agreement of the Seller,
enforceable against the Seller in accordance with its terms, except as limited
by applicable bankruptcy, insolvency, reorganization, moratorium or other
similar laws now or hereafter in effect relating to or affecting creditors'
rights generally, including the effect of statutory and other laws regarding
fraudulent conveyances and preferential transfers, and subject to the
limitations imposed by general equitable principles (regardless of whether such
enforceability is considered in a proceeding at law or in equity).

          No Conflict or Violation; Consents and Approvals. Neither the
execution and delivery of this Agreement by the Seller nor the consummation of
the transactions contemplated hereby by the Seller will (a) violate any
provision of the articles of incorporation or by-laws of the Seller, (b) require
the consent, waiver or approval of any federal, state, local or foreign
government, or regulatory authority, agency or commission, including courts of
competent jurisdiction, domestic or foreign (a "Governmental Entity"), except
for (i) consent of the SEC under the 1935 Act, the Missouri Public Service
Commission and consents required under the FERC (ii) consents and approvals to
be made and obtained before the Closing and those which have been made and
obtained and (iii) such consents and approvals as, if not made or obtained, will
not, in the aggregate, have a Material Adverse Effect, (c) result in a violation
or breach of, or constitute (with or without notice or lapse of time or both) a
default (or give rise to any right of termination, cancellation or acceleration
or any obligation to repay) under, any of the terms, conditions or provisions of
any indenture, mortgage, note, bond, encumbrance, license, contract, lease,
franchise, permit, agreement or other instrument or obligation to which the
Seller or the Company is a party or by which the Seller or the Company, or any
of their respective properties or assets may be bound, except for such
violations, breaches and defaults as, in the aggregate, will not have a Material
Adverse Effect or (d) violate any order, writ, judgment, injunction, decree,
statute, ordinance, rule or regulation of any Governmental Entity applicable to
the Seller, the Company or the Project or by which any of their respective
properties or assets may be bound, except for such violations as, in the
aggregate, will not have a Material Adverse Effect.

          Financial Statements. The Seller has previously furnished to the Buyer
the financial statements of the Company and the Project and the related
financial statements of operations and cash flows of the Project and the Company
(including any related notes) for the fiscal years ending December 31, 1999 and
interim period ending September 30, 2000. Each balance sheet included in the
financial statements, in all material respects, fairly presents the financial
position of the Company or the Project, as applicable, as of its date, and the
other related statements included in the financial statements, in all material
respects, fairly present the results of operations of the Company and the
Project for the periods presented therein, all in conformity with the applicable
system of FERC accounts.

          Absence of Certain Changes. Since July 31, 2000, neither the Company
nor the Project has (a) suffered any change in its business, operations or
financial position, except such

                                       11
<PAGE>

changes which, in the aggregate, are not reasonably likely to have a Material
Adverse Effect, (b) conducted its business in any material respect not in the
ordinary and usual course consistent with Prudent Utility Practice or (c) except
in the ordinary course of business consistent with Prudent Utility Practice and
except with respect to the transactions contemplated by this Agreement, (i)
incurred any long-term indebtedness or issued any debt securities or assumed or
guaranteed the obligations of any other Person, (ii) declared, set aside for
payment or paid any dividend or other distribution (whether in cash, stock,
property or any combination thereof) in respect of the equity of the Seller or
redeemed or otherwise acquired any interests of equity of the Seller, (iii)
sold, transferred or otherwise disposed of any of its material property or
assets, (iv) created any material Encumbrance on any of its material property or
assets, (v) increased in any manner the rate or terms of compensation of any of
its directors, officers or other employees, or (vi) entered into or amended any
employment, bonus, severance or retirement contract.

          Compliance with Law. To the knowledge of the Seller, the businesses of
the Company and the Project are not being conducted in violation of any
applicable order, writ, judgment, injunction, decree, statute, ordinance, rule
or regulation of any Governmental Entity, except for such violations as, in the
aggregate, will not have a Material Adverse Effect. Neither the Company nor the
Project is in default or violation (and no event has occurred which with notice
or the lapse of time or both would constitute a default or violation) of any
term, condition or provision of (a) its certificate of incorporation or by-laws
(or other comparable governing documents) or (b) any order, writ, judgment,
injunction, decree, statute, ordinance, rule or regulation of any Governmental
Entity applicable to the Company or the Project, as the case may be, except for
such defaults and violations as, in the aggregate, will not have a Material
Adverse Effect.

          Permits. Each of the Company and the Project has all governmental
permits, licenses and authorizations necessary for the conduct of its businesses
in all material respects as presently conducted (the "Permits") and is in
compliance with the terms of the Permits, except for such Permits the absence of
which would not have a Material Adverse Effect or any non-compliance as will not
have a Material Adverse Effect.

          Litigation. Except as set forth in Schedule 3.9, there is no action,
suit or proceeding pending, or, to the knowledge of the Seller, threatened,
against the Seller, the Company or the Project or any properties or rights of
the Seller, the Company or the Project before any Governmental Entity which
involves a claim, the adverse determination of which would be reasonably likely
to have a Material Adverse Effect.

          Section III.10.  Taxes
                           -----

          .  The Seller, with respect to the Company and the Project, within the
time and manner prescribed by law, except as would not have a Material Adverse
Effect, (i) duly and timely filed (taking into account any extension of time
within which to file) all Tax Returns  required to be filed by any of them as of
the date hereof and all such filed Tax Returns are complete and accurate in all
respects; (ii) (A) has within the time and in the manner prescribed by law
timely paid all Taxes that are shown as due on such filed Tax Returns, except
with respect to matters contested in good faith and (B) no penalties or charges
are due with respect to the late filing of any Tax Return required to be filed
by or with respect to any of them on or before the

                                       12
<PAGE>

date hereof; (iii) with respect to any filed Tax Returns has not waived any
statute of limitations with respect to Taxes or agreed to any extension of time
with respect to a Tax assessment or deficiency; (iv) as of the date hereof, does
not have any deficiency, or any such audits, examinations, investigations or
other proceedings in respect of Taxes or Tax matters pending or proposed or
threatened in writing; and (v) has not been or is not a party to any Tax sharing
agreement or similar arrangement.

          Environmental Matters. Except as set forth in Section 3.7, to the
Seller's knowledge (a) the Project is in compliance with all applicable
Environmental Laws, except where such failures to comply will not, in the
aggregate, have a Material Adverse Effect; and (b) there are no Environmental
Claims, pending or threatened against the Company or the Project which, if
determined adversely against the Company or the Project, would have a Material
Adverse Effect.

          Brokers and Finders. No broker, finder or investment banker is
entitled to any brokerage, finder's or other fee or commission in connection
with the transactions contemplated by this Agreement based upon arrangements
made by or on behalf of the Seller.

                                  ARTICLE IV
                  REPRESENTATIONS AND WARRANTIES OF THE BUYER

          Buyer represents and warrants to the Seller as follows:

          Organization Standing and Power. The Buyer is duly organized, validly
existing and in good standing under the laws of the jurisdiction of its
organization and has all requisite power and authority to conduct its business
as it is now being conducted and to own, lease and operate its property and
assets except where the failure to be so organized, existing and in good
standing or to have such power or authority would not, in the aggregate, either
(i) have a material adverse effect on the business, results of operations,
assets or financial condition of the Buyer or (ii) impair, hinder or adversely
affect the ability of the Buyer to perform material obligations under this
Agreement or to consummate the transactions contemplated hereby (either of such
effects, a "Buyer Material Adverse Effect").

          Authority Relative to this Agreement. The Buyer has all requisite
authority and power to execute and deliver this Agreement and to consummate the
transactions contemplated hereby. The execution and delivery of this Agreement
and the consummation of the transactions contemplated hereby have been duly and
validly authorized by all required action on the part of the Buyer and no other
proceedings on the part of the Buyer are necessary to authorize this Agreement
or to consummate the transactions contemplated hereby. This Agreement has been
duly and validly executed and delivered by the Buyer and, assuming this
Agreement has been duly authorized, executed and delivered by the Seller, this
Agreement constitutes a valid and binding agreement of the Buyer, enforceable
against the Buyer in accordance with its terms, except as limited by applicable
bankruptcy, insolvency, reorganization, moratorium or other similar laws now or
hereafter in effect relating to or affecting creditors' rights generally,
including the effect of statutory and other laws regarding fraudulent
conveyances and preferential transfers, and subject to the limitations imposed
by general equitable principles (regardless of whether such enforceability is
considered in a proceeding at law or in equity).

                                       13
<PAGE>

          No Conflict or Violation; Consents and Approvals. Neither the
execution and delivery of this Agreement by the Buyer nor the consummation of
the transactions contemplated hereby by the Buyer will (a) violate any provision
of the certificate of incorporation or by-laws (or other comparable governing
documents) of the Buyer, (b) require the consent, waiver or approval of any
Governmental Entity, except for (i) consents and approvals to be made and
obtained before the Closing and those which have been made and obtained and (ii)
such consents and approvals as, if not made or obtained, will not, in the
aggregate, have a Buyer Material Adverse Effect, (c) result in a violation or
breach of, or constitute (with or without notice or lapse of time or both) a
default (or give rise to any right of termination, cancellation or acceleration
or any obligation to repay) under, any of the terms, conditions or provisions of
any indenture, mortgage, note, bond, encumbrance, license, contract, lease,
franchise, permit, agreement or other instrument or obligation to which the
Buyer is a party or by which the Buyer or any of its properties or assets may be
bound, except for such violations, breaches and defaults as, in the aggregate,
will not have a Buyer Material Adverse Effect or (d) violate any order, writ,
judgment, injunction, decree, statute, ordinance, rule or regulation of any
Governmental Entity applicable to the Buyer or by which any of its properties or
assets may be bound, except for such violations as, in the aggregate, will not
have a Buyer Material Adverse Effect.

          Legal Proceedings. There are no actions, suits or proceedings pending
or, to the knowledge of the Buyer, threatened against the Buyer before any
court, arbitrator or governmental or regulatory body or authority which would
prevent or delay the consummation of the transactions contemplated by this
Agreement.

          Brokers and Finders. No broker, finder or investment banker is
entitled to any brokerage, finder's or other fee or commission in connection
with the transactions contemplated by this Agreement based upon arrangements
made by or on behalf of the Buyer.

                                   ARTICLE V

                                  TAX MATTERS

          Section V.1.  Tax Matters.
                        -----------

          Transfer Taxes. Seller and Buyer shall each pay 50% of all sales, use,
transfer, real property transfer, recording, gains, stock transfer and other
similar taxes and fees ("Transfer Taxes"), if any, arising out of or in
connection with the sale of the Company Stock pursuant to this Agreement. Seller
shall file all necessary documentation and Tax Returns with respect to such
Transfer Taxes and Buyer shall promptly reimburse Seller for its portion of such
Transfer Taxes.

          Indemnification. (i) Seller shall indemnify and hold harmless Buyer
from and against any and all Tax Claims relating to the Company or the Project,
resulting from, arising out of or relating to: (A) any and all Taxes imposed on
or incurred by the Company or the Project relating to any taxable period ending
on or prior to the Closing Date ("Pre-Closing Taxes") and (B) with respect to
any taxable period ending on or after the Closing Date that includes the Closing
Date (the "Overlap Period"), any and all Taxes imposed on or incurred by the
Company or the Project attributable to the period ending on or prior to the
Closing Date ("Overlap Period Taxes"). For purposes of the Overlap Period, Taxes
shall be attributable to the period ending on

                                       14
<PAGE>

or prior to the Closing Date: (A) in the case of any real or personal property
Tax imposed on or incurred by the Company or the Project in an amount equal to
the real or personal property Tax for the entire period multiplied by a fraction
the numerator of which is the number of days in the period for which such real
or personal property Tax is paid ending on the Closing Date and the denominator
of which is the number of days in the entire period; and (B) in the case of any
other Taxes imposed on or incurred by the Company or the Project, to the extent
of any Taxes imposed on or incurred by the Company, or the Project that would be
payable if the taxable year ended on the Closing Date.

          (ii)    Buyer shall indemnify and hold harmless Seller from and
against any and all Tax Claims relating to the Company or the Project resulting
from, arising out of or relating to any and all Taxes other than Pre-Closing
Taxes or Overlap Period Taxes ("Post-Closing Taxes").

          Refunds. Any refund or credit of the Company for Pre-Closing Taxes or
Overlap Period Taxes shall be for the benefit of the Seller and the Buyer shall
pay any such refund to the Seller within 30 days after the Company or the
Project receives such refund or actually realizes the benefit of such refund or
credit.

          Contests. (i) Seller and Buyer agree that, in the event the Company
receives notice in writing of any examination, claim, settlement, proposed
adjustment, administrative or judicial proceeding, or other matter (a "Tax
Controversy") related to any Pre-Closing Taxes or Overlap Period Taxes, Seller
or Buyer, as the case may be, (the "Notifying Party") shall notify the other
party in writing as soon as reasonably practical (but in no event not more than
10 Business Days) after receipt of such notice (a "Tax Controversy Notice");
provided that the failure to timely deliver notice to such other party shall not
relieve the such other party of its obligations hereunder, except to the extent
that the such other party is actually and materially prejudiced by the failure
to give such notice.

          (ii)    With respect to any Tax Controversy solely involving Pre-
Closing Taxes or Overlap Period Taxes that is not reasonably likely to raise any
material issues relating to Post-Closing Taxes in excess of $50,000, Seller
shall have the right to control such Tax Controversy, at Sellers expense,
including the determination of any matter related to (A) the submission and
content of documentation, memoranda of fact and law and brief, the conduct of
any oral argument or other presentations, submissions or ruling requests made in
connection with such Tax Controversy, the selection of witnesses, the
negotiation of any stipulations of fact and any other matter related to the
contest of any such Tax Controversy, (B) the choice of counsel or any other
related representation with respect to such Tax Controversy, (C) the choice of
venue with respect to any court of competent jurisdiction, (D) any decision to
appeal an adverse determination of any court of competent jurisdiction, and (E)
any settlement, disposition or other resolution of such Tax Controversy (each, a
"Tax Controversy Issue").

          (iii)   With respect to any Tax Controversy solely involving Post-
Closing Taxes that is not reasonably likely to raise any material issues
relating to Pre-Closing Taxes or Overlap Period Taxes in excess of $50,000,
Buyer shall have the right to control such Tax Controversy, at Buyers expense,
including the determination of any matter related to any Tax Controversy Issue.

          (iv)    With respect to any Tax Controversy not described in Section
5.1(d)(i) or

                                       15
<PAGE>

(ii) above, Buyer and Seller may participate in all matters related to such Tax
Controversy provided such person informs the Notifying Party in writing of its
desire to participate in such Tax Controversy (a "Participation Notice") within
45 days of the receipt of a Tax Controversy Notice. If a Participation Notice is
not received within the prescribed time period, the Notifying Party shall have
the right to control such Tax Controversy, at such party's expense, including
the determination of any matter related to any Tax Controversy Issue. If a
Participation Notice is received within the prescribed time period, Buyer and
Seller shall each have the right to participate in all matters related to such
Tax Controversy and agree to negotiate in good faith with respect to the
determination of any matter related to any Tax Controversy Issue; provided,
however, each party shall have the right to choose their own legal counsel. Any
resolution or other determination of any Tax Controversy Issue that cannot be
resolved through the good faith negotiation of the parties shall be resolved in
accordance with Section 5.1(f). Any expenses related to the resolution of any
Tax Controversy involving joint participation by the Buyer and Seller (other
than any expenses related to each parties legal counsel which shall be the sole
responsibility of such party) shall be (i) allocated between the Buyer and
Seller in proportion to the amount of any Taxes imposed upon such party pursuant
to a Final Determination of the Tax Controversy Issue or (ii) split equally
between Buyer and Seller if no Taxes are imposed upon any party pursuant to a
Final Determination of the Tax Controversy Issue.

          (v)     Any dispute involving the application or operation of this
Section 5.1(d) shall be resolved in accordance with Section 5.1(f).

          Information. To the extent not inconsistent with this Agreement, the
provisions of Article Seven of the Tax Disaffiliation Agreement shall apply with
respect to all matters addressed therein.

          Referees. Any disagreement not resolved by mutual agreement of the
parties shall be resolved by an independent referee that is mutually acceptable
to the parties hereto (a "Referee"). In the event the parties cannot agree on a
Referee within 3 Business Days, each party shall select within 2 Business Days
an independent nationally recognized law firm or accounting firm expert in tax
matters and such firms shall jointly choose the Referee. A Referee so chosen
shall consider, among other things, the magnitude and size of the item in
question, the impact of the resolution on other Taxable periods of the Buyer and
Seller and their Subsidiaries and the likelihood of a party's position
ultimately prevailing, and otherwise shall resolve any such disagreement
pursuant to such procedures as it may deem advisable. The Referee shall render
its decision within 5 Business Days unless another time period is specified
herein or is mutually agreed upon by the Seller and Buyer. Any such resolution
shall be binding on the parties hereto without further recourse.

          (g)     If any increase in Tax for any period for which
indemnification is provided under Section 5.1(b) gives rise to a Tax Asset to an
indemnified party or its Affiliate, the amount of the indemnity payment shall be
reduced by the present value of such Tax Asset computed as of the end of the Tax
year with respect to which the indemnified Tax arises. For this purpose, the
present value of the Tax Asset shall be computed by (x) treating the Tax Asset
as utilized as and to the extent it first becomes available (e.g., as any
increase in Tax basis could be depreciated) to reduce Tax as the maximum rate
applicable for that Tax for the Tax year with respect to which the indemnified
Tax arises and then (y) discounting the resulting Tax savings to present value

                                       16
<PAGE>

using a discount rate of the higher of the Prime Rate or the interest rate
applicable to deficiencies at the end of the Tax year with respect to which the
indemnified Tax arises.

          After Tax Amount. Any indemnity payment made pursuant to this Section
shall be increased by an amount equal to the product of (i) the amount of any
indemnified Tax calculated without regard to this Section 5.1(h) and (ii) a
fraction, the numerator of which is the highest applicable combined federal and
state Tax rate in effect with respect to the person receiving the indemnity
payment expressed as a decimal (the "Effective Tax Rate") and the denominator of
which is one minus the Effective Tax Rate.

          Payments and Interest
          ---------------------

          (i)     Except as otherwise provided herein, all payments required by
this Agreement shall be due 30 days after the payment by a party to a Taxing
Authority or a receipt of a refund or credit by a party from a Taxing Authority,
whichever is applicable, of the relevant item. All payments to be made hereunder
shall be made in immediately available funds. Payments shall be deemed made when
received.

          (ii)     Any amount not paid when due under this Agreement shall bear
interest at Prime until the date on which payment is made.

          Section 338(h)(10) Election; Purchase Price Allocation. Upon the
consummation of the purchase contemplated by this Agreement, Seller shall make a
timely Section 338(h)(10) Election with Buyer, if so requested by Buyer, with
respect to the purchase of the Company Stock and shall make similar elections
under state and local law to the fullest extent possible. Buyer will be
responsible for preparing and filing all documents and materials necessary in
connection with making the Section 338(h)(10) Election and any similar elections
under state and local law. No later than 120 days after the Closing Date, Buyer
shall prepare and deliver to Seller a proposed allocation of the Purchase Price
for purposes of the Section 338(h)(10) Election. Buyer and Seller shall timely
complete and file IRS Form 8023 and any similar form under applicable state law.
If Buyer and Seller cannot agree on such allocation, Buyer and Seller will
select a nationally recognized accounting firm or other recognized expert to
appraise the assets for purposes of determining such allocation. The cost of
such appraisal will be divided between Buyer and Seller equally. Buyer and
Seller agree not to take any position inconsistent with any such allocation for
Tax reporting purposes.

          Tax Returns. Buyer shall be responsible for preparing and filing all
Tax Returns of the Company relating to Tax periods ending after the Closing
Date. Seller shall cooperate with Buyer with respect to preparing and filing
such Tax Returns and shall promptly provide all information reasonably requested
by Buyer necessary to prepare and file the Tax Returns.

          Other Tax Returns.
          -----------------

          (A)     With respect to Tax Returns of the Company for any Tax periods
ending after the Closing Date relating to Taxes for which the Seller has an
indemnification obligation pursuant to Section 5.1(b)(i) (an "Overlap Period
Return"), the Buyer shall deliver to Seller a pro forma Overlap Period Return
setting forth the Tax liability of the Company for such Tax period 35 days prior
to the due date for filing such Overlap Period Return (including extensions) and
a

                                       17
<PAGE>

statement setting forth the portion of the Company's Tax liability, if any, for
which the Seller has an indemnification obligation pursuant to Section 5.1(b)(i)
along with any related calculations used by Buyer in determining such
indemnifiable portion (the "Company Tax Allocation Statement"). Such pro forma
Overlap Period Return shall set forth all necessary and required information
(including, without limitation, schedules, statements and such supporting
documentation as Seller or Buyer may reasonably request from time to time) in
such form as would be required for filing with the appropriate Taxing authority
and shall correctly reflect the facts regarding the income, properties,
operations and status of the Company. Except as otherwise required by law, such
pro forma Overlap Period Return shall be prepared making the elections and using
the methods of accounting that were made or used by the Company on the
applicable Tax Return most recently filed with respect to a Tax period ending
prior to the Closing Date; provided, however, the parties agree to negotiate in
good faith to reach agreement with respect to any reasonable proposal relating
to a relevant election or method of accounting to be used in connection with
filing any Overlap Period Return of the Company and any dispute with respect to
such reasonable proposal shall be resolved in accordance with Section 5.1(f).
Seller may (at its own expense) review all work papers and procedures used to
prepare each pro forma Overlap Period Return.

          (B)     Seller shall notify Buyer in writing of any proposed
adjustments to a pro forma Overlap Period Return of the Company including the
Company Tax Allocation Statement within 15 days of the date upon which it
receives such pro forma Overlap Period Return and Company Tax Allocation
Statement from Buyer. In the event that Buyer shall, within 5 days following the
receipt of such notification from Seller, disagree with any proposed adjustment
made under the above provision, such disagreement shall be resolved in
accordance with Section 5.1(f). Upon agreement by the parties as to proposed
adjustments, if any, to a pro forma Overlap Period Return including the Company
Tax Allocation Statement, or upon a decision of the Referee, the pro forma
Overlap Period Return as adjusted (if at all) shall be deemed to be a final
Overlap Period Return for purposes of this Agreement.

          (C)     Prior to the due date of the Overlap Period Return (including
any extensions), Seller shall pay to Buyer an amount equal to the portion of the
Company Tax liability for which Seller has an indemnification obligation
pursuant to Section 5.1(b)(i) shown on the Company Tax Allocation Statement
taking into account any payments made by the Company, Buyer or any Affiliate
thereof to Seller, any Affiliate thereof or any Taxing Authority.

          Survival of Obligations. The obligations of the parties set forth in
this Article 5 shall be unconditional and absolute and shall remain in effect
until the expiration of the applicable statutes of limitation.

                                  ARTICLE VI
                                   COVENANTS

          Conduct of the Business Pending the Closing. Except as contemplated by
this Agreement, or with the prior written consent of the Buyer, during the
period from the date of this Agreement to the Closing, the Seller shall cause
the Company to abide by the Project Agreements. In addition, except with the
prior written consent of the Buyer, Seller shall use commercially reasonable
efforts to: (a) cause the Company to conduct its businesses and

                                       18
<PAGE>

operations according to Prudent Utility Practice and take all commercially
reasonable efforts permitted by the Project Agreements to cause the Project to
do the same, (b) cause the Company to preserve intact its properties, assets and
business organizations, keep available the services of its officers and
employees (to the extent such officers and employees are available) and maintain
satisfactory relationships with customers, suppliers, distributors and others
having commercially beneficial business relationships with the Company or the
Project, as the case may be, in each case in the ordinary course of business
consistent with Prudent Utility Practice and take all commercially reasonable
efforts permitted by the Project Agreements to cause the Project to do the same.
Seller will not, and will not permit the Company to, take any action that is
reasonably likely to cause any of the conditions to the Buyer's obligations set
forth in Article IX hereof to not be satisfied. Without limiting the foregoing,
without the prior written consent of Buyer, Seller shall not permit: (a) the
Company to allow the sale, lease (as lessor), transfer or other disposition of
any material part of its property, or to vote under the Project Agreements to
allow the Project to do so, other than assets used, consumed and replaced in the
ordinary course of business consistent with Prudent Utility Practice or (b)the
Company to engage in any capital expenditures beyond its current plans or vote
under the Project Agreements to allow the Project to do so, other than those
necessary to maintain the Company's assets and the Project in accordance with
Prudent Utility Practice.

          Consents and Approvals
          ----------------------

          (a)     Immediately following delivery of Buyer's notice of exercise
of the Option pursuant to Section 2.2, each of the parties hereto shall use all
commercially reasonable efforts necessary to (i) obtain as promptly as
practicable all consents, authorizations, approvals and waivers required in
connection with the consummation of the transactions contemplated by this
Agreement under any Federal, state, local or foreign law or regulation
(including, without limitation, all of the Transaction Regulatory Approvals),
(ii) promptly cause to be lifted or rescinded any injunction or restraining
order or other order adversely affecting the ability of the parties hereto to
consummate the transactions contemplated hereby and (iii) promptly effect all
necessary registrations and filings (including, without limitation, filings
under the HSR Act and filings with Governmental Entities necessary to obtain all
of the Transaction Regulatory Approvals) and submissions of information
requested by any Governmental Entity. The parties hereto further covenant and
agree, with respect to any threatened or pending preliminary or permanent
injunction or other order, decree or ruling or statute, rule, regulation or
executive order that would adversely affect the ability of the parties hereto to
consummate the transactions contemplated hereby, to respectively use
commercially reasonable efforts to prevent the entry, enactment or promulgation
thereof, as the case may be.

          (b)     Each party hereto shall promptly inform the other of any
material communication from the FERC, the FTC, the DOJ or any other Governmental
Entity regarding any of the transactions contemplated hereby. If any party
hereto or any Affiliate thereof receives a request for additional information or
documentary material from any such Governmental Entity with respect to the
transactions contemplated hereby, then such party shall endeavor in good faith
to make, or cause to be made, as soon as reasonably practicable and after
consultation with the other party, an appropriate response in compliance with
such request. The Buyer shall advise the Seller promptly in respect of any
understandings, undertakings or agreements (oral or written) that the Buyer
proposes to make or enter into with the FERC, the FTC, the DOJ or any other

                                       19
<PAGE>

Governmental Entity in connection with the transactions contemplated hereby.

          Filings. Promptly after delivery of Buyer's notice of exercise of the
Option pursuant to Section 2.2, each of the parties hereto shall prepare and
make or cause to be made any required filings, submissions and notifications
under the laws of any domestic or foreign jurisdiction to the extent that such
filings are necessary to consummate the transactions contemplated hereby
(including, without limitation, to obtain the consents and approvals,
contemplated by Section 6.2 hereof) and shall use commercially reasonable
efforts to take all other actions necessary to consummate the transactions
contemplated hereby in a manner consistent with applicable law. Each of the
parties hereto will furnish to the other party such necessary information and
reasonable assistance as such other party may reasonably request in connection
with the foregoing.

          Covenant to Satisfy Conditions. The Seller and the Buyer will each
respectively use commercially reasonable efforts to ensure that the conditions
set forth herein are satisfied, insofar as such matters are within the control
of such party.

          Further Assurances. Upon the terms and subject to the conditions
herein provided, each of the parties hereto shall use commercially reasonable
efforts to take or cause to be taken all action, to do or cause to be done, and
to assist and cooperate with the other party hereto in doing, all things
necessary, proper or advisable under applicable laws and regulations to
consummate and make effective, in the most expeditious manner practicable, the
transactions contemplated by this Agreement, including, but not limited to, (a)
the satisfaction of the conditions precedent to the obligations of any of the
parties hereto, (b) the defending of any lawsuits or other legal proceedings,
whether judicial or administrative, challenging this Agreement or the
performance of the obligations hereunder or thereunder and (c) the execution and
delivery of such instruments, and the taking of such other actions as the other
party hereto may reasonably require in order to carry out the intent of this
Agreement.

          Maintenance of Stock Free of Encumbrances. From the date hereof until
the Closing, the Seller shall continue to own the Company Stock free and clear
of all Encumbrances and shall cause the Company to not issue any additional
shares of common stock or any other equity interest in the Company.

          Maintenance of Project. From the date hereof until the Closing Seller
will cause the Company to take all actions permitted under the Project
Agreements to cause the Project to be completed in accordance with current plans
and in compliance with all manufacturer's warranties and specifications and
thereafter maintained in at least the repair, working order and condition
consistent with Prudent Utility Practice (reasonable wear and tear excepted) and
shall repair or replace any part of the Project damaged or destroyed by fire or
other casualty; and shall promptly give notice to Buyer upon becoming aware of
the occurrence or impending or threatened occurrence of any event which would
cause or constitute a breach of any of the representations, warranties or
covenants of Seller contained in this Agreement (without regard to whether or
not such breach constitutes or might constitute, if applicable, a Material
Adverse Effect), and Seller shall cause the Company to promptly forward to Buyer
and Parent all financial reports or statements that the Company prepares or
receives in connection with the Project during the term of this Agreement,
including without limitations those financial reports

                                       20
<PAGE>

required to be provided under the Project Agreements. Seller shall cause the
Company to vote under the Project Agreements for the Project to maintain
appropriate insurance consistent with Prudent Utility Practice and Seller shall
cause the Company to promptly notify Buyer of the cancellation of any such
policy or any material modification thereto.

          Risk of Loss. If, following exercise of the Option and on or before
the Closing Date, all or any portion of the Project is damaged or destroyed by
fire or other casualty, the Seller shall notify the Buyer promptly in writing of
such fact and, if the requisite parties have not voted to completely repair and
reconstruct the Project pursuant to Section 4.7 of the Project Agreement within
thirty (30) days after the occurrence of the loss and such loss shall not have
been cured prior to the Closing, Buyer shall have the option to elect (A) to
negotiate an adjustment to the Purchase Price, in which event the Buyer and the
Seller shall negotiate in good faith to settle the loss resulting therefrom
(including, without limitation, by making a fair and equitable adjustment to the
Purchase Price), and, upon such settlement, proceed with the Closing pursuant to
the terms of this Agreement, (B) to demand that Seller cause the Company to
assign to Buyer all rights it has against any insurance companies, Governmental
Authorities and others with respect to such damage or destruction without
adjustment to the Purchase Price, or (C) to terminate this Agreement.

          1935 Act and 1940 Act. Buyer shall use its good faith efforts to
obtain a permanent exemption from registration under the 1940 Act or such other
permanent solutions to avoid the burdensome requirements of the 1940 Act based
on the Buyer's current situation other than by means of the exercise of this
Option and registration under the 1935 Act. Buyer shall use commercially
reasonable efforts to keep Seller and Parent apprised of any developments with
respect to Buyer's exemption from registration under the 1940 Act and/or
registration under the 1935 Act.

          Limitation. Seller shall not be, or deemed to be, in breach of any
obligation under any of the preceding provisions of this Article VI with respect
to any matter, event or circumstance where primary responsibility is that of the
Agent under the Project Agreements or where such matter, event or circumstance
results from action by one or more of the Project Committees undertaken by less
than a Super-Majority Vote.

                                  ARTICLE VII
                    CONDITIONS TO EACH PARTY'S OBLIGATIONS

          The obligation of each party to effect the transactions contemplated
hereby shall be subject to the fulfillment, or written waiver by each of the
parties, at or prior to the Closing of each of the following conditions:

          Regulatory Approvals. All of the material Transaction Regulatory
Approvals shall have been obtained.

          HSR Act. All required waiting periods applicable to this Agreement and
the transactions contemplated hereby under the HSR Act shall have expired, or
been terminated.

          1940 Act. Buyer shall not have otherwise obtained a permanent
exemption to

                                       21
<PAGE>

registration under the 1940 Act.

                                 ARTICLE VIII
                    CONDITIONS TO THE SELLER'S OBLIGATIONS

          The obligations of the Seller to effect the transactions contemplated
hereby shall be subject to the fulfillment, or written waiver by the Seller, at
or prior to the Closing, of each of the following conditions:

          Representations and Warranties of the Buyer True. The representations
and warranties of the Buyer contained herein qualified as to materiality shall
be true and correct and those not so qualified shall be true and correct in all
material respects as of the date hereof and at and as of the Closing Date as
though such representations and warranties were made at and as of such date
unless limited by their terms to a prior date except as will not have a Material
Adverse Effect.

          Performance. The Buyer shall have performed and complied in all
material respects with all agreements, obligations, covenants and conditions
required by this Agreement to be performed or complied with by the Buyer on or
prior to the Closing.

          Certificates. The Buyer shall have furnished the Seller with such
certificates to evidence its compliance with the conditions set forth in
Sections 8.1 and 8.2 hereof as the Seller may reasonably request.

          No Injunction or Proceeding. No statute, rule, regulation, executive
order, decree, preliminary or permanent injunction or restraining order shall
have been enacted, entered, promulgated or enforced by any Governmental Entity
which prohibits or restricts the consummation of the transactions contemplated
hereby.

          Seller Support Obligations. All Seller Support obligations shall have
been released.

          Opinion of Counsel. Buyer shall have delivered an opinion of counsel
that registration under the 1935 Act provides an exemption to registration under
the 1940 Act.

                                  ARTICLE IX
                     CONDITIONS TO THE BUYER'S OBLIGATIONS

          The obligation of the Buyer to effect the transactions contemplated
hereby shall be subject to the fulfillment, or written waiver by the Buyer, at
or prior to the Closing, of each of the following conditions:

          Representations and Warranties of the Seller True. The representations
and warranties of the Seller contained herein qualified as to materiality shall
be true and correct and those not so qualified shall be true and correct in all
material respects as of the date hereof and at and as of the Closing Date as
though such representations and warranties were made at and as of such date
unless limited by their terms to a prior date except as will not have a Material
Adverse Effect.

                                       22
<PAGE>

          Performance by the Seller. The Seller shall have performed and
complied in all material respects with all agreements, obligations, covenants
and conditions required by this Agreement to be performed or complied with by
the Seller on or prior to the Closing.

          Certificates. The Seller shall have furnished the Buyer with such
certificates to evidence its compliance with the conditions set forth in
Sections 9.1 and 9.2 hereof as the Buyer may reasonably request. Nothing herein
shall restrict the ability of the Seller to provide a certificate pursuant to
this Section 9.3 that sets forth therein exceptions, and the existence of any
exceptions in the certificate shall not be deemed a failure to meet the
condition set forth in this Section 9.3; provided that the existence of the
events described therein, to the extent that such new exceptions would have a
Material Adverse Effect, may result in the failure to satisfy the conditions set
forth in Section 9.1 or 9.2 hereof.

          No Injunction or Proceeding. No statute, rule, regulation, executive
order, decree, preliminary or permanent injunction or restraining order shall
have been enacted, entered, promulgated or enforced by any Governmental Entity
which prohibits or restricts the consummation of the transactions contemplated
hereby.

          No Material Adverse Effect. No Material Adverse Effect shall have
occurred and be continuing.

          Power Purchase Agreement. The Power Purchase Agreement in the form of
Exhibit A shall be in full force and effect and no material default by either
party shall have occurred thereunder.

          Third Party Consents. All required third party consents required for
the consummation of the sale of the Company Stock and the consummation of the
other transactions contemplated by this Agreement shall have been obtained and
shall be satisfactory to Buyer in its sole discretion and shall not contain or
be granted subject to terms or conditions which are not acceptable to the Buyer
in its sole discretion.

                                   ARTICLE X
                 TERMINATION AND ABANDONMENT; INDEMNIFICATION

          Termination. This Agreement may be terminated at any time prior to the
Closing:

          (a)     by mutual consent of the Buyer and the Seller; or

          (b)     by the Buyer or the Seller if the Closing shall not have
occurred within 18 months following the delivery by Buyer of notice of exercise
of the Option, except that the Buyer and the Seller shall have the right, in
their mutual discretion, to extend this time period in this Section 10.1(b) an
additional 15 days; provided that the right to terminate this Agreement pursuant
to this Section 10.1(b) shall not be available to a party whose failure to
perform any of its obligations under this Agreement resulted in the failure of
the Closing to be consummated by such date; or

          (c)     by the Buyer or the Seller if Buyer shall have obtained a
permanent exemption under the 1940 Act or shall be no longer subject to the
registration requirements under

                                       23
<PAGE>

the 1940 Act by virtue of its ownership of securities of Parent or Oneok, Inc.;
or

          (d)     by the Buyer or the Seller upon the occurrence of a
"Regulatory Change" as defined herein. For the purpose of this Section 10.1(d),
Regulatory Change shall mean the repeal of the 1935 Act, the removal of the
permanent exemption under the 1940 Act afforded by registration under the 1935
Act, the rejection by the Securities and Exchange Commission of Buyer's
attempted 1935 Act Registration or the removal of the materially burdensome
provisions of registration under the 1940 Act as in effect on the date hereof.

          Procedure and Effect of Termination. In the event of a termination of
this Agreement pursuant to Section 10.1 hereof by one party, written notice
thereof shall forthwith be given to the other party, and, except as set forth
below, this Agreement shall terminate and be void and have no effect and the
transactions contemplated hereby shall be abandoned. If this Agreement is
terminated as provided herein:

          (a)     the Buyer shall redeliver, and shall cause its agents
(including, without limitation, attorneys and accountants) to redeliver, all
documents, work papers and other material of the Seller relating to the
transactions contemplated hereby, whether obtained before or after the execution
hereof or certify the destruction thereof; and

          (b)  except as otherwise expressly set forth herein, no party to this
Agreement shall have any liability hereunder to any other party, except for any
breach by such party of the terms and provisions of this Agreement.

          Section X.3.  Survival of Representations and Warranties.
                        ------------------------------------------

          (a)     The representations and warranties contained in Section 3.2
(relating to title to the Company Stock) shall survive the Closing and remain in
full force and effect indefinitely. All other representations and warranties
contained herein shall survive the Closing and remain in full force and effect
until the expiration of the applicable statute of limitations.

          (b)     The sole and exclusive remedy for any breach of any
representation, warranty, covenant or agreements shall be pursuant to Section
10.4 hereof, except in the case of fraud.  Under no circumstances shall any
party be liable to any other party for consequential, incidental or punitive
damages.

          Section X.4.  Indemnification.
                        ---------------

          (a)     From and after the Closing, Seller shall indemnify and hold
harmless, subject to the limitation set forth in this Section 10.4, the Buyer
from and against any Damages arising from or in connection with (i) any
inaccuracy in any representation or the breach of any warranty of the Seller
under this Agreement or (ii) the failure of the Seller to duly perform or
observe any term, provision, covenant or agreement to be performed or observed
by the Seller pursuant to this Agreement.

          (b)     From and after the Closing, the Buyer shall indemnify and hold
harmless the Seller from and against any Damages to the extent they are the
result of (i) any inaccuracy in any representation or the breach of any warranty
of the Buyer under this Agreement or (ii) the

                                       24
<PAGE>

failure of the Buyer to duly perform or observe any term, provision, covenant or
agreement to be performed or observed by the Buyer pursuant to this Agreement.

          (c)     Any calculation of Damages for purposes of this Section 10.4
or any claim for indemnification under Section 5.1(b) shall be (i) net of any
insurance recovery made by the Indemnified Party (whether paid directly to such
Indemnified Party or assigned by the Indemnified Party to such Indemnified
Party) and (ii) reduced to take account of any net Tax benefit realized by the
Indemnified Party arising from the deductibility of any such Damages or Tax. Any
tax refund resulting from or relating to any such Damages or Claims shall be
payable to the Indemnifying Party promptly after the receipt thereof. Any
indemnification payment hereunder shall initially be made without regard to this
Section 10.4(c) and shall be reduced to reflect any such net Tax benefit only
after the Indemnified Party actually realized such benefit. For purposes of this
Agreement, an Indemnified Party shall be deemed to have "actually realized" a
net Tax benefit to the extent that, and at such time as, the amount of Taxes
payable by such Indemnified Party is reduced below the amount of Taxes that such
Indemnified Party would have been required to pay but for deductibility of such
Damages. The amount of any reduction hereunder shall be adjusted to reflect any
final determination (which shall include the execution of IRS Form 870-AD or
successor form) with respect to the Indemnified Party's liability for Taxes and,
if necessary, the Seller or the Buyer, as the case may be, shall make payments
to the other to reflect such adjustment. Any indemnity payment under this
Agreement shall be treated as an adjustment to the Purchase Price for Tax
purposes, unless a final determination (which shall include the execution of IRS
Form 870-AD or successor form) with respect to the Indemnified Party or any of
its Affiliates causes any such payment not to be treated as an adjustment to the
Purchase Price for U.S. Federal income Tax purposes.

          (d)     No action, claim or setoff for Damages subject to
indemnification under this Section 10.4 shall be brought or made with respect to
claims for Damages resulting from a breach of any covenant or agreement
contained in this Agreement after the date on which such representation,
warranty, covenant or agreement shall terminate pursuant to Section 10.1 hereof;
provided, however, that any claim made with reasonable specificity by the party
hereto or its Affiliates or Representatives seeking indemnification (the
"Indemnified Party") to the party from which indemnification is sought (the
"Indemnifying Party") within the time periods set forth above shall survive (and
be subject to indemnification) until it is finally and fully resolved.

          (e)     An Indemnified Party shall give notice to an Indemnifying
Party promptly after such Indemnified Party has actual knowledge of any claim
which might give rise to a claim for Damages under this Section 10.4, and shall
permit the Indemnifying Party to assume the defense of any such claim or any
litigation resulting therefrom; provided that the Indemnified Party may
participate in such defense at its own expense (unless the Indemnified Party
shall have reasonably concluded, based upon a written opinion of outside
counsel, that there is a reasonable likelihood of a conflict of interest between
the Indemnifying Party and the Indemnified Party in such action, in which case
the fees and expenses of one separate firm of counsel shall be at the expense of
the Indemnifying Party); and provided further that the failure of the
Indemnified Party to give notice as provided herein shall not relieve the
Indemnifying Party of its obligations hereunder unless the Indemnifying Party is
actually and materially prejudiced thereby. An Indemnifying Party, in the
defense of any such claim or litigation, shall not, except with the consent of
the Indemnified Party (which consent shall not unreasonably be withheld),
consent to

                                       25
<PAGE>

entry of any judgment or enter into any settlement which does not include as an
unconditional term thereof the giving by the claimant or plaintiff to such
Indemnified Party of a full and unconditional release from all liability in
respect of such claim or litigation. An Indemnified Party shall furnish such
information regarding itself or the claim in question as such Indemnifying Party
may reasonably request in writing and as shall be reasonably required in
connection with defense of such claim and litigation resulting therefrom.

          (f)     Any claim for Taxes shall be provided for exclusively in
Article V but shall be subject to Section 10.4(c).

                                  ARTICLE XI
                             ADDITIONAL AGREEMENTS

          No EWG. Buyer agrees that it shall not seek to qualify the Project as
an exempt wholesale generator and will not otherwise seek exemption from
registration under the 1935 Act from the time it exercises the Option until such
time as it no longer owns an interest in the Company or the Project.

                                  ARTICLE XII
                                 MISCELLANEOUS

          Waivers and Amendments. This Agreement may be amended, superseded,
canceled, renewed or extended, and the terms hereof may be waived, only by a
written instrument signed by each of the parties or, in the case of a waiver, by
the party or parties waiving compliance. No delay on the part of any party in
exercising any right, power or privilege hereunder shall operate as a waiver
thereof, nor shall any waiver on the part of any party of any right, power or
privilege, nor any single or partial exercise of any such right, power or
privilege preclude any further exercise thereof or the exercise of any other
such right, power or privilege.

          Entire Agreement; Assignment. This Agreement constitutes the entire
agreement among the parties with respect to the subject matter hereof and
supersedes all other prior agreements and understandings, both written and oral,
among the parties or any of them with respect to the subject matter hereof
(other than the Confidentiality Agreement). This Agreement may not be assigned
by a party hereto without the consent of the other parties.

          Validity. The invalidity or unenforceability of any provision of this
Agreement shall not affect the validity or enforceability of any other provision
of this Agreement, each of which shall remain in full force and effect.

          Notices. All notices, requests and other communications to any party
hereunder shall be in writing (including facsimile or similar writing) and shall
be given:

          (a)     If to the Seller, to:

                  Western Resources, Inc.
                  818 South Kansas Avenue
                  Topeka, Kansas  66612

                                       26
<PAGE>

                  Attention: General Counsel
                  Facsimile: (785) 575-1936

                  with a copy to:

                  LeBoeuf, Lamb, Greene & MacRae, L.L.P.
                  125 West 55th Street
                  New York, NY  10019
                  Attention:  William S. Lamb and Benjamin G. Clark
                  Facsimile:  (212) 424-8500

          (b)     If to the Buyer, to:

                  Westar Industries, Inc.
                  818 South Kansas Avenue
                  Topeka, Kansas  66612
                  Attention: President
                  Facsimile: (785) 575-1936

                  with a copy to:

                  LeBoeuf, Lamb, Greene & MacRae, L.L.P.
                  125 West 55th Street
                  New York, NY  10019
                  Attention:  William S. Lamb and Benjamin G. Clark
                  Facsimile:  (212) 424-8500

                  If to the Parent, to:

                  HV Enterprises Inc. c/o Public Service Company of New Mexico
                  Alvarado Square
                  Albuquerque, NM  87158
                  Attention: Chief Financial Officer
                  Facsimile:  (505) 241-1368

                  with a copy to:

                  Winthrop, Stimson, Putnam & Roberts
                  One Battery Park Plaza
                  New York, NY  10004
                  Attention:  Timothy Michael Toy
                              Stephen R. Rusmisel
                  Facsimile:  (212) 858-1500

or such other address or facsimile number as a party may hereafter specify by
like notice to the other party.  Each such notice, request or other
communication shall be effective (i) if given by facsimile, when such facsimile
is transmitted to the facsimile number specified herein and the appropriate
confirmation is provided, (ii) if given by United States mail, three days after
such

                                       27
<PAGE>

notice is deposited in the mail in a postage pre-paid envelope or (iii) if
given by any other means, when delivered at the address specified herein.

          Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of New York, without regard to principles
of conflicts of laws.

          Publicity. Except as otherwise may be required by law, for so long as
this Agreement is in effect, neither the Seller nor the Buyer shall issue or
cause the publication of any press release or other public announcement with
respect to the transactions contemplated by this Agreement without the express
prior written approval of the other party which shall not be unreasonably
withheld.

          Section XII.7.  Jurisdiction; Forum.
                          -------------------

          (a)     By the execution and delivery of this Agreement, the Buyer
submits to the personal jurisdiction of any state or Federal court in the State
of Kansas in any suit or proceeding arising out of or relating to this
Agreement.

          (b)     The parties hereto agree that the appropriate and exclusive
forum for any disputes between any of the parties hereto arising out of this
Agreement or the transactions contemplated hereby shall be in any state or
Federal court in the State of Kansas. The parties hereto further agree that the
parties will not bring suit with respect to any disputes arising out of this
Agreement or the transactions contemplated hereby in any court or jurisdiction
other than the above specified courts; provided, however, that the foregoing
shall not limit the rights of the parties to obtain execution of judgment in any
other jurisdiction. The parties hereto further agree, to the extent permitted by
law, that an unappealable judgment against a party in any action or proceeding
contemplated above shall be conclusive and may be enforced in any other
jurisdiction within or outside the United States by suit on the judgment, a
certified or exemplified copy of which shall be conclusive evidence of the fact
and amount of such judgment.

          Descriptive Headings. The descriptive headings herein are inserted for
convenience of reference only and are not intended to be part of or to affect
the meaning or interpretation of this Agreement.

          Counterparts. This Agreement may be executed in any number of
counterparts, each of which shall be deemed to be an original, but all of which
shall constitute one and the same agreement.

          Expenses. Whether or not the transactions contemplated by this
Agreement are consummated, and except as otherwise expressly set forth herein,
all legal and other costs and expenses incurred in connection with the
transactions contemplated by this Agreement shall be paid by the party incurring
such expenses.

          Parties in Interest. This Agreement shall be binding upon and inure
solely to the benefit of each party hereto and, except as expressly set forth in
Section 10.4 hereof, nothing in this Agreement, express or implied, is intended
by or shall confer upon any other Person any rights, benefits or remedies of any
nature whatsoever under or by reason of this Agreement. Any

                                       28
<PAGE>

Person who is a beneficiary of such Section 10.4 shall be entitled to enforce
his rights thereunder; provided, however, that, prior to the Closing, no action
to enforce such rights may be commenced by any such Person without the prior
written consent of the Seller.

          Interpretation. No reference in this Agreement to "commercially
reasonable efforts" shall require a Person obligated to use such efforts to
incur out-of-pocket expenses or indebtedness or, except as expressly provided
herein, to institute litigation or to consent generally to service of process in
any jurisdiction where it is not already subject.

                                       29
<PAGE>

          IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date first above written.

                                 WESTERN RESOURCES, INC.

                                 By:______________________________________
                                    Name:
                                    Title:

                                 WESTAR INDUSTRIES, INC.

                                 By:______________________________________
                                    Name:
                                    Title:

                                       30

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