________________________________________________________________________________







                                 GUARANTEE AGREEMENT

                                       Between



                                 NEVADA POWER COMPANY
                                    (as Guarantor)



                                         and



                            _____________________________
                                     (as Trustee)



                                     dated as of




                               __________________, 1997





________________________________________________________________________________




                                  TABLE OF CONTENTS

                                                                            PAGE

                                      ARTICLE I

                                     DEFINITIONS


     SECTION 101.   Definitions................................................1

                                      ARTICLE II

                                 TRUST INDENTURE ACT

     SECTION 201.   Trust Indenture Act; Application...........................4
     SECTION 202.   List of Holders............................................5
     SECTION 203.   Reports by the Guarantee Trustee...........................5
     SECTION 204.   Periodic Reports to Guarantee Trustee......................5
     SECTION 205.   Evidence of Compliance with Conditions Precedent...........5
     SECTION 206.   Events of Default; Waiver..................................6
     SECTION 207.   Event of Default; Notice...................................6
     SECTION 208.   Conflicting Interests......................................6

                                     ARTICLE III

                  POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE

     SECTION 301.   Powers and Duties of the Guarantee Trustee.................6
     SECTION 302.   Certain Rights  of  Guarantee  Trustee.....................8
     SECTION 303.   Indemnity.................................................10

                                      ARTICLE IV

                                  GUARANTEE TRUSTEE

     SECTION 401.   Guarantee Trustee; Eligibility............................10
     SECTION 402.   Appointment, Removal and Resignation of  the Guarantee
                    Trustee...................................................11

                                         -i-



                                  TABLE OF CONTENTS
                                     (CONTINUED)

                                                                            PAGE

                                      ARTICLE V

                                      GUARANTEE

     SECTION 501.   Guarantee.................................................11
     SECTION 502.   Waiver of Notice and Demand...............................12
     SECTION 503.   Obligations Not Affected..................................12
     SECTION 504.   Rights of Holders.........................................13
     SECTION 505.   Guarantee of Payment......................................13
     SECTION 506.   Subrogation...............................................13

                                      ARTICLE VI

                             COVENANTS AND SUBORDINATION

     SECTION 601.   Subordination.............................................14
     SECTION 602.   Pari Passu Guarantees.....................................14

                                     ARTICLE VII

                                     TERMINATION

     SECTION 701.   Termination...............................................14

                                     ARTICLE VIII

                                    MISCELLANEOUS

     SECTION 801.   Successors and Assigns....................................14
     SECTION 802.   Amendments................................................15
     SECTION 803.   Notices...................................................15
     SECTION 804.   Benefit...................................................16
     SECTION 805.   Interpretation............................................16
     SECTION 806.   GOVERNING LAW.............................................17


                                         -ii-




                                CROSS-REFERENCE TABLE*


Section of                                            Section of
Trust Indenture Act                                   Guarantee
of  1939,  as amended                                 Agreement
- ---------------------                                 ---------

310(a) . . . . . . . . . . . . . . . . . . . . . . . . 401(a)
310(b) . . . . . . . . . . . . . . . . . . . . . . . . 401(c),  208
310(c) . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
311(a) . . . . . . . . . . . . . . . . . . . . . . . . 202(b)
311(b) . . . . . . . . . . . . . . . . . . . . . . . . 202(b)
311(c) . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
312(a) . . . . . . . . . . . . . . . . . . . . . . . . 202(a)
312(b) . . . . . . . . . . . . . . . . . . . . . . . . 202(b)
313 . . . . . . . . . . . . . . . . . . . . . . . . . .203
314(a) . . . . . . . . . . . . . . . . . . . . . . . . 204
314(b) . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
314(c) . . . . . . . . . . . . . . . . . . . . . . . . 205
314(d) . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
314(e) . . . . . . . . . . . . . . . . . . . . . . . . 101,205,  302
314(f) . . . . . . . . . . . . . . . . . . . . . . . . 201, 302
315(a) . . . . . . . . . . . . . . . . . . . . . . . . 301(d)
315(b) . . . . . . . . . . . . . . . . . . . . . . . . 207
315(c) . . . . . . . . . . . . . . . . . . . . . . . . 301
315(d) . . . . . . . . . . . . . . . . . . . . . . . . 301(d)
316(a) . . . . . . . . . . . . . . . . . . . . . . . . 101,206,  504
316(b) . . . . . . . . . . . . . . . . . . . . . . . . 503
316(c) . . . . . . . . . . . . . . . . . . . . . . . . 802
317(a) . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
317(b) . . . . . . . . . . . . . . . . . . . . . . . . Inapplicable
318(a) . . . . . . . . . . . . . . . . . . . . . . . . 201(b)
318(b) . . . . . . . . . . . . . . . . . . . . . . . . 201
318(c) . . . . . . . . . . . . . . . . . . . . . . . . 201(a)




____________________

*   This Cross-Reference Table does not constitute part of the Guarantee
    Agreement and shall not affect the interpretation of any of its terms or
    provisions.



                                 GUARANTEE AGREEMENT


         This GUARANTEE AGREEMENT, dated as of ______________, 1997, is
executed and delivered by Nevada Power Company, a _______________ corporation
(the "Guarantor"), and _________________________, a ________________________
organized under the laws of _______________, as trustee (the "Guarantee
Trustee"), for the benefit of the Holders (as defined herein) from time to time
of the Preferred Securities (as defined herein) of NVP Capital I, a Delaware
statutory business trust (the "Issuer").

         WHEREAS, pursuant to an Amended and Restated Trust Agreement (the
"Trust Agreement"), dated as of _____________, 1997 among the Issuer Trustees
named therein, the Guarantor, as Depositor, and the Holders from time to time of
undivided beneficial interests in the assets of the Issuer, the Issuer is
issuing ______________ of its ____% Cumulative Quarterly Income Preferred
Securities, Series A (liquidation preference $25 per preferred security) (the
"Preferred Securities") representing preferred undivided beneficial interests in
the assets of the Issuer and having the terms set forth in the Trust Agreement;

         WHEREAS, the Preferred Securities will be issued by the Issuer and the
proceeds thereof, together with the proceeds from the issuance of the Issuer's
Common Securities (as defined below), will be used to purchase the Debentures
(as defined in the Trust Agreement) of the Guarantor which will be deposited
with __________________, as Property Trustee under the Trust Agreement, as trust
assets; and

         WHEREAS, as incentive for the Holders to purchase Preferred Securities
the Guarantor desires irrevocably and unconditionally to agree, to the extent
set forth herein, to pay to the Holders of the Preferred Securities the
Guarantee Payments (as defined herein) and to make certain other payments on the
terms and conditions set forth herein.

         NOW, THEREFORE, in consideration of the purchase by each Holder of
Preferred Securities, which purchase the Guarantor hereby agrees shall benefit
the Guarantor, the Guarantor executes and delivers this Guarantee Agreement for
the benefit of the Holders from time to time of the Preferred Securities.



                                      ARTICLE I
                                     DEFINITIONS

         SECTION 101.   DEFINITIONS.

         As used in this Guarantee Agreement, the terms set forth below shall,
unless the context otherwise requires, have the following meanings.  Capitalized
or otherwise defined terms used but not

                                         -1-



otherwise defined herein shall have the meanings assigned to such terms in the
Trust Agreement as in effect on the date hereof.

         "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person, PROVIDED, HOWEVER, that an Affiliate of the
Guarantor shall not be deemed to include the Issuer.  For the purposes of this
definition, "CONTROL" when used with respect to any specified Person means the
power to direct the management and policies of such Person, directly or
indirectly, whether through the ownership of voting securities, by contract or
otherwise; and the terms "CONTROLLING" and "CONTROLLED" have meanings
correlative to the foregoing.

         "Common Securities" means the securities representing common undivided
beneficial interests in the assets of the Issuer.

         "Debt" means, with respect to any Person, whether recourse is to all
or a portion of the assets of such Person and whether or not contingent, (i)
every obligation of such Person for money borrowed; (ii) every obligation of
such Person evidenced by bonds, debentures, notes or other similar instruments,
including obligations incurred in connection with the acquisition of property,
assets or businesses; (iii) every reimbursement obligation of such Person with
respect to letters of credit, bankers' acceptances or similar facilities issued
for the account of such Person; (iv) every obligation of such Person issued or
assumed as the deferred purchase price of property or services (but excluding
trade accounts payable or accrued liabilities arising in the ordinary course of
business); (v), every capital lease obligation of such Person; and (vi) every
guarantee of or responsibility or liability for, direct or indirect, as obligor
or otherwise (a) any obligation of the types referred to in clauses (i) through
(v) of another Person or (b) the payment of any and all dividends of another
Person.

         "Event of Default" means a default by the Guarantor on any of its
payment or other obligations under this Guarantee Agreement; PROVIDED, however,
that, except with respect to a default in payment of any Guarantee Payments, the
Guarantor shall have received notice of default and shall not have cured such
default within 60 days after receipt of such notice.

         "Guarantee Payments" means the following payments or distributions,
without duplication, with respect to the Preferred Securities, to the extent not
paid or made by or on behalf of the Issuer: (i) any accrued and unpaid
Distributions (as defined in the Trust Agreement) required to be paid on the
Preferred Securities, to the extent the Issuer shall have funds on hand
available therefor at such time, (ii) the redemption price, including all
accrued and unpaid Distributions to the date of redemption (the "Redemption
Price"), with respect to the Preferred Securities called for redemption by the
Issuer to the extent the Issuer shall have funds on hand available therefor at
such time, and (iii) upon a voluntary or involuntary termination, winding-up or
liquidation of the Issuer, unless Debentures are distributed to the Holders, the
lesser of (a) the aggregate of the liquidation preference of $25 per Preferred
Security plus accrued and unpaid Distributions on the Preferred Securities to
the date of payment to the extent the Issuer shall have funds on hand available
to make such payment at such time


                                         -2-



and (b) the amount of assets of the Issuer remaining available for distribution
to Holders in liquidation of the Issuer (in either case, the "Liquidation
Distribution").

         "Guarantee Trustee" means ________________, until a Successor
Guarantee Trustee has been appointed and has accepted such appointment pursuant
to the terms of this Guarantee Agreement and thereafter means each such
Successor Guarantee Trustee.

         "Holder" means any holder, as registered on the books and records of
the Issuer, of any Preferred Securities; PROVIDED, HOWEVER, that in determining
whether the holders of the requisite percentage of Preferred Securities have
given any request, notice, consent or waiver hereunder, "Holder" shall not
include the Guarantor, the Guarantee Trustee or any Affiliate of the Guarantor
or the Guarantee Trustee.

         "Indenture" means the Junior Subordinated Indenture dated as of
___________, 1997, as supplemented and amended between the Guarantor and
_________________, as trustee.

         "List of Holders" has the meaning specified in Section 202 (a) .

         "Majority in liquidation preference of the Securities" means, except
as provided by the Trust Indenture Act, a vote by the Holder(s), voting
separately as a class, of more than 50% of the liquidation preference of all
then outstanding Preferred Securities issued by the Issuer.

         "Officers' Certificate" means, with respect to any Person, a
certificate signed by the Chairman and Chief Executive Officer, President or a
Vice President, and by the Treasurer, an Assistant Treasurer, the Controller,
the Secretary or an Assistant Secretary of such Person, and delivered to the
Guarantee Trustee.  Any Officers' Certificate delivered with respect to
compliance with a condition or covenant provided for in this Guarantee Agreement
shall include:

         (a)   a statement that each officer signing the Officers' Certificate
    has read the covenant or condition and the definitions relating thereto;

         (b)  a brief statement of the nature and scope of the examination or
    investigation undertaken by each officer in rendering the Officers'
    Certificate;

         (c)   a statement that each such officer has made such examination or
    investigation as, in such officer's opinion, is necessary to enable such
    officer to express an informed opinion as to whether or not such covenant
    or condition has been complied with; and

         (d)  a statement as to whether, in the opinion of each such officer,
    such condition or covenant has been complied with.

         "Person" means a legal person, including any individual, corporation,
estate, partnership, joint venture, association, joint stock company, limited
liability company, trust, unincorporated

                                         -3-



association, or government or any Agency or political subdivision thereof, or
any other entity of whatever nature.

         "Responsible Officer" means, with respect to the Guarantee Trustee,
any Senior Vice President, any Vice President, any Assistant vice President, the
Secretary, any Assistant Secretary, the Treasurer, any Assistant Treasurer, any
Trust Officer or Assistant Trust Officer or any other officer of the Corporate
Trust Department of the Guarantee Trustee customarily performing functions
similar to those performed by any of the above designated officers and also
means, with respect to a particular corporate trust matter, any other officer to
whom such matter is referred because of that officer's knowledge of and
familiarity with the particular subject.

         "Senior Debt" means the principal of (and premium, if any) and
interest, if any (including interest accruing on or after the filing of any
petition in bankruptcy or for reorganization relating to the Guarantor whether
or not such claim for post-petition interest is allowed in such proceeding), on
Debt, whether incurred on or prior to the date of this Guarantee or thereafter
incurred, unless, in the instrument creating or evidencing the same or pursuant
to which the same is outstanding, it is provided that such obligations are not
superior in right of payment to the Guarantee or to other Debt which is pari
passu with, or subordinated to, the Guarantee; PROVIDED, however, that Senior
Debt shall not be deemed to include (a) any Debt of the Guarantor which when
incurred and without respect to any election under Section 1111(b) of the
Bankruptcy Reform Act of 1978, was without recourse to the Guarantor, (b) any
Debt of the Guarantor to any of its Subsidiaries, (c) Debt to any employee of
the Guarantor, (d) any liability for taxes, (e) Debt or other monetary
obligations to trade creditors created or assumed by the Guarantor or any of its
Subsidiaries in the ordinary course of business in connection with the obtaining
of goods, materials or services and (f) Debt issued under the Indenture and (g)
the Guarantee.

         "Successor Guarantee Trustee" means a successor Guarantee Trustee
possessing the qualifications to act as Guarantee Trustee under Section 401.

         "Trust Indenture Act" means the Trust Indenture Act of 1939, as
amended.


                                      ARTICLE II
                                 TRUST INDENTURE ACT

         SECTION 201.   TRUST INDENTURE ACT; APPLICATION.

         (a)  This Guarantee Agreement is subject to the provisions of the
    Trust Indenture Act that are required to be part of this Guarantee
    Agreement and shall, to the extent applicable, be governed by such
    provisions.

                                         -4-



         (b)  If and to the extent that any provision of this Guarantee
    Agreement limits, qualifies or conflicts with the duties imposed by
    Sections 310 to 317, inclusive, of the Trust Indenture Act, such imposed
    duties shall control.

         SECTION 202.   LIST OF HOLDERS.

         (a)  The Guarantor shall furnish or cause to be furnished to the
    Guarantee Trustee (a) semiannually, on or before January 15 and July 15 of
    each year, a list, in such form as the Guarantee Trustee may reasonably
    require, of the names and addresses of the Holders ("List of Holders") as
    of a date not more than 15 days prior to the delivery thereof, and (b) at
    such other times as the Guarantee Trustee may request in writing, within 30
    days after the receipt by the Guarantor of any such request, a List of
    Holders as of a date not more than 15 days prior to the time such list is
    furnished, in each case to the extent such information is in the possession
    or control of the Guarantor and is not identical to a previously supplied
    list of Holders or has not otherwise been received by the Guarantee Trustee
    in its capacity as such.  The Guarantee Trustee may destroy any List of
    Holders previously given to it on receipt of a new List of Holders.

         (b)  The Guarantee Trustee shall comply with its obligations under
    Section 311(a), Section 311(b) and Section 312(b) of the Trust Indenture
    Act.

         SECTION 203.   REPORTS BY THE GUARANTEE TRUSTEE.

         Not later than July 15 of each year, commencing July 15, 1997, the
Guarantee Trustee shall provide to the Holders such reports as are required by
Section 313 of the Trust Indenture Act, if any, in the form and in the manner
provided by Section 313 of the Trust Indenture Act.  The Guarantee Trustee shall
also comply with the requirements of Section 313(d) of the Trust Indenture Act.

         SECTION 204.   PERIODIC REPORTS TO GUARANTEE TRUSTEE.

         The Guarantor shall provide to the Guarantee Trustee, the Securities
and Exchange Commission and the Holders such documents, reports and information,
if any, as required by Section 314 of the Trust Indenture Act and the
compliance certificate required by Section 314 of the Trust Indenture Act in the
form, in the manner and at the times required by Section 314 of the Trust
Indenture Act.

         SECTION 205.   EVIDENCE OF COMPLIANCE WITH CONDITIONS PRECEDENT.

         The Guarantor shall provide to the Guarantee Trustee such evidence of
compliance with such conditions precedent, if any, provided for in this
Guarantee Agreement that relate to any of the matters set forth in Section
314(c) of the Trust Indenture Act.  Any certificate or opinion required to

                                         -5-



be given by an officer pursuant to Section 314(c)(1) may be given in the form of
an Officers' Certificate.

         SECTION 206.   EVENTS OF DEFAULT; WAIVER.

         The Holders of a Majority in liquidation preference of the Preferred
Securities may, on behalf of the Holders, waive any past Event of Default and
its consequences.  Upon such waiver, any such Event of Default shall cease to
exist, and any Event of Default arising therefrom shall be deemed to have been
cured, for every purpose of this Guarantee Agreement, but no such waiver shall
extend to any subsequent or other default or Event of Default or impair any
right consequent therefrom.

         Section 207.   EVENT OF DEFAULT; NOTICE.

         (a)  The Guarantee Trustee shall, within 90 days after the occurrence
    of an Event of Default, transmit by mail, first class postage prepaid, to
    the Holders, notices of all Events of Default known to the Guarantee
    Trustee, unless such defaults have been cured before the giving of such
    notice, provided, that, except in the case of a default in the payment of a
    Guarantee Payment, the Guarantee Trustee shall be protected in withholding
    such notice if and so long as the Board of Directors, the executive
    committee or a trust committee of directors and/or Responsible Officers of
    the Guarantee Trustee in good faith determines that the withholding of such
    notice is in the interests of the Holders.

         (b)  The Guarantee Trustee shall not be deemed to have knowledge of
    any Event of Default unless the Guarantee Trustee shall have received
    written notice, or a Responsible Officer charged with the administration of
    the Trust Agreement shall have obtained written notice, of such Event of
    Default.

         SECTION 208.   CONFLICTING INTERESTS.

         The Trust Agreement shall be deemed to be specifically described in
this Guarantee Agreement for the purposes of clause (i) of the first proviso
contained in Section 310(b) of the Trust Indenture Act.


                                     ARTICLE III
                  POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE

         SECTION 301.   POWERS AND DUTIES OF THE GUARANTEE TRUSTEE.

         (a)  This Guarantee Agreement shall be held by the Guarantee Trustee
    for the benefit of the Holders, and the Guarantee Trustee shall not
    transfer this Guarantee Agreement to any Person except a Holder exercising
    his or her rights pursuant to Section 504(iv) or to a Successor Guarantee
    Trustee on acceptance by such Successor Guarantee Trustee of its
    appointment to act as Successor Guarantee Trustee.  The right, title and
    interest of the Guarantee Trustee shall automatically vest in any Successor
    Guarantee Trustee, upon acceptance by such Successor Guarantee Trustee of
    its

                                         -6-



    appointment hereunder, and such vesting and cessation of title shall be
    effective whether or not conveyancing documents have been executed and
    delivered pursuant to the appointment of such Successor Guarantee Trustee.

         (b)  If an Event of Default has occurred and is continuing, the
    Guarantee Trustee shall enforce this Guarantee Agreement for the benefit of
    the Holders.

         (c)  The Guarantee Trustee, before the occurrence of any Event of
    Default and after the curing of all Events of Default that may have
    occurred, shall undertake to perform only such duties as are specifically
    set forth in this Guarantee Agreement, and no implied covenants shall be
    read into this Guarantee Agreement against the Guarantee Trustee.  In case
    an Event of Default has occurred (that has not been cured or waived
    pursuant to Section 206), the Guarantee Trustee shall exercise such of the
    rights and powers vested in it by this Guarantee Agreement, and use the
    same degree of care and skill in its exercise thereof, as a prudent person
    would exercise or use under the circumstances in the conduct of his or her
    own affairs.

         (d)  No provision of this Guarantee Agreement shall be construed to
    relieve the Guarantee Trustee from liability for its own negligent action,
    its own negligent failure to act or its own willful misconduct, except
    that:

              (i)   prior to the occurrence of any Event of Default and after
         the curing or waiving of all such Events of Default that may have
         occurred:

                   (A)  the duties and obligations of the Guarantee Trustee
              shall be determined solely by the express provisions of this
              Guarantee Agreement, and the Guarantee Trustee shall not be
              liable except for the performance of such duties and obligations
              as are specifically set forth in this Guarantee Agreement; and

                   (B)  in the absence of bad faith on the part of the
              Guarantee Trustee, the Guarantee Trustee may conclusively rely,
              as to the truth of the statements and the correctness of the
              opinions expressed therein, upon any certificates or opinions
              furnished to the Guarantee Trustee and conforming to the
              requirements of this Guarantee Agreement; but in the case of any
              such certificates or opinions that by any provision hereof or of
              the Trust Indenture Act are specifically required to be furnished
              to the Guarantee Trustee, the Guarantee Trustee shall be under a
              duty to examine the same to determine whether or not they conform
              to the requirements of this Guarantee Agreement;

              (ii) the Guarantee Trustee shall not be liable for any error of
         judgment made in good faith by a Responsible Officer of the Guarantee
         Trustee, unless it shall be

                                         -7-



         proved that the Guarantee Trustee was negligent in ascertaining the
         pertinent facts upon which such judgment was made;

              (iii)     the Guarantee Trustee shall not be liable with respect
         to any action taken or omitted to be taken by it in good faith in
         accordance with the direction of the Holders of not less than a
         Majority in liquidation preference of the Preferred Securities
         relating to the time, method and place of conducting any proceeding
         for any remedy available to the Guarantee Trustee, or exercising any
         trust or power conferred upon the Guarantee Trustee under this
         Guarantee Agreement; and

              (iv) no provision of this Guarantee Agreement shall require the
         Guarantee Trustee to expend or risk its own funds or otherwise incur
         personal financial liability in the performance of any of its duties
         or in the exercise of any of its rights or powers, if the Guarantee
         Trustee shall have reasonable grounds for believing that the repayment
         of such funds or liability is not reasonably assured to it under the
         terms of this Guarantee Agreement or adequate indemnity against such
         risk or liability is not reasonably assured to it.

         SECTION 302.   CERTAIN RIGHTS  OF  GUARANTEE  TRUSTEE.

         (a)  Subject to the provisions of Section 301:

              (i)  The Guarantee Trustee may rely and shall be fully protected
         in acting or refraining from acting upon any resolution, certificate,
         statement, instrument, opinion, report, notice, request, direction,
         consent, order, bond, debenture, note, other evidence of indebtedness
         or other paper or document reasonably believed by it to be genuine and
         to have been signed, sent or presented by the proper party or parties.

              (ii) Any direction or act of the Guarantor contemplated by this
         Guarantee Agreement shall be sufficiently evidenced by an Officers'
         Certificate unless otherwise prescribed herein.

              (iii)     Whenever, in the administration of this Guarantee
         Agreement, the Guarantee Trustee shall deem it desirable that a matter
         be proved or established before taking, suffering or omitting to take
         any action hereunder, the Guarantee Trustee (unless other evidence is
         herein specifically prescribed) may, in the absence of bad faith on
         its part, request and rely upon an Officers' Certificate which, upon
         receipt of such request from the Guarantee Trustee, shall be promptly
         delivered by the Guarantor.

              (iv) The Guarantee Trustee may consult with legal counsel, and
         the written advice or opinion of such legal counsel with respect to
         legal matters shall be full and complete authorization and protection
         in respect of any action taken, suffered or omitted to be taken by it
         hereunder in good faith and in accordance with such advice

                                         -8-



         or opinion.  Such legal counsel may be legal counsel to the Guarantor
         or any of its Affiliates and may be one of its employees.  The
         Guarantee Trustee shall have the right at any time to seek
         instructions concerning the administration of this Guarantee Agreement
         from any court of competent jurisdiction.

              (v)  The Guarantee Trustee shall be under no obligation to
         exercise any of the rights or powers vested in it by this Guarantee
         Agreement at the request or direction of any Holder, unless such
         Holder shall have provided to the Guarantee Trustee such adequate
         security and indemnity as would satisfy a reasonable person in the
         position of the Guarantee Trustee, against the costs, expenses
         (including attorneys' fees and expenses) and liabilities that might be
         incurred by it in complying with such request or direction, including
         such reasonable advances as may be requested by the Guarantee Trustee;
         provided that, nothing contained in this Section 302(a)(v) shall be
         taken to relieve the Guarantee Trustee, upon the occurrence of an
         Event of Default, of its obligation to exercise the rights and powers
         vested in it by this Guarantee Agreement.

              (vi) The Guarantee Trustee shall not be bound to make any
         investigation into the facts or matters stated in any resolution,
         certificate, statement, instrument, opinion, report, notice, request,
         direction, consent, order, bond, debenture, note, other evidence of
         indebtedness or other paper or document, but the Guarantee Trustee, in
         its discretion, may make such further inquiry or investigation into
         such facts or matters as it may see fit.

              (vii)     The Guarantee Trustee may execute any of the trusts or
         powers hereunder or perform any duties hereunder either directly or by
         or through its agents or attorneys, and the Guarantee Trustee shall
         not be responsible for any misconduct or negligence on the part of any
         such agent or attorney appointed with due care by it hereunder.

              (viii)    Whenever in the administration of this Guarantee
         Agreement the Guarantee Trustee shall deem it desirable to receive
         instructions with respect to enforcing any remedy or right or taking
         any other action hereunder, the Guarantee Trustee (A) may request
         instructions from the Holders, (B) may refrain from enforcing such
         remedy or right or taking such other action until such instructions
         are received, and (C) shall be protected in acting in accordance with
         such instructions.

         (b)  No provision of this Guarantee Agreement shall be deemed to
    impose any duty or obligation on the Guarantee Trustee to perform any act
    or acts or exercise any right, power, duty or obligation conferred or
    imposed on it in any jurisdiction in which it shall be illegal, or in which
    the Guarantee Trustee shall be unqualified or incompetent in accordance
    with applicable law, to perform any such act or acts or to exercise any
    such right, power, duty or

                                         -9-



    obligation.  No permissive power or authority available to the Guarantee
    Trustee shall be construed to be a duty to act in accordance with such
    power and authority.

         SECTION 303.  INDEMNITY.


         The Guarantor agrees to indemnify the Guarantee Trustee for, and to
hold it harmless against, any loss, liability or expense incurred without
negligence or bad faith on the part of the Guarantee Trustee, arising out of or
in connection with the acceptance or administration of this Guarantee Agreement,
including the costs and expenses of defending itself against any claim or
liability in connection with the exercise or performance of any of its powers or
duties hereunder.  The Guarantee Trustee will not claim or exact any lien or
charge on any Guarantee Payments as a result of Any amount due to it under this
Guarantee Agreement.


                                      ARTICLE IV
                                  GUARANTEE TRUSTEE

         SECTION 401.   GUARANTEE TRUSTEE; ELIGIBILITY.

         (a)  There shall at all times be a Guarantee Trustee which shall:

              (i)  not be an Affiliate of the Guarantor; and

              (ii) be a Person that is eligible pursuant to the Trust Indenture
         Act to act as such and has a combined capital and surplus of at least
         $50,000,000, and shall be a corporation meeting the requirements of
         Section 310(c) of the Trust Indenture Act.  If such corporation
         publishes reports of condition at least annually, pursuant to law or
         to the requirements of the supervising or examining authority, then,
         for the purposes of this Section and to the extent permitted by the
         Trust Indenture Act, the combined capital and surplus of such
         corporation shall be deemed to be its combined capital and surplus as
         set forth in its most recent report of condition so published.

         (b)  If at any time the Guarantee Trustee shall cease to be eligible
    to so act under Section 401(a), the Guarantee Trustee shall immediately
    resign in the manner and with the effect set out in Section 402(c).

         (c)  If the Guarantee Trustee has or shall acquire any "conflicting
    interest" within the meaning of Section 310(b) of the Trust Indenture Act,
    the Guarantee Trustee and Guarantor shall in all respects comply with the
    provisions of Section 310(b) of the Trust Indenture Act.

                                         -10-



         SECTION 402.  APPOINTMENT, REMOVAL AND RESIGNATION OF  THE GUARANTEE
TRUSTEE.

         (a)  Subject to Section 402(b), the Guarantee Trustee may be appointed
    or removed without cause at any time by the Guarantor.

         (b)  The Guarantee Trustee shall not be removed until a Successor
    Guarantee Trustee has been appointed and has accepted such appointment by
    written instrument executed by such Successor Guarantee Trustee and
    delivered to the Guarantor.

         (c)  The Guarantee Trustee appointed hereunder shall hold office until
    a Successor Guarantee Trustee shall have been appointed or until its
    removal or resignation.  The Guarantee Trustee may resign from office
    (without need for prior or subsequent accounting) by an instrument in
    writing executed by the Guarantee Trustee and delivered to the Guarantor,
    which resignation shall not take effect until a Successor Guarantee Trustee
    has been appointed and has accepted such appointment by instrument in
    writing executed by such Successor Guarantee Trustee and delivered to the
    Guarantor and the resigning Guarantee Trustee.

         (d)  If no Successor Guarantee Trustee shall have been appointed and
    accepted appointment as provided in this Section 402 within 60 days after
    delivery to the Guarantor of an instrument of resignation, the resigning
    Guarantee Trustee may petition, at the expense of the Guarantor, any court
    of competent jurisdiction for appointment of a Successor Guarantee Trustee.
    Such court may thereupon, after prescribing such notice, if any, as it may
    deem proper, appoint a Successor Guarantee Trustee.


                                      ARTICLE V
                                      GUARANTEE

         SECTION 501.   GUARANTEE.

         The Guarantor irrevocably and unconditionally agrees to pay in full to
the Holders the Guarantee Payments (without duplication of amounts theretofore
paid by or on behalf of the Issuer), as and when due, regardless of any defense,
right of set-off or counterclaim which the Issuer may have or assert.  The
Guarantor's obligation to make a Guarantee Payment may be satisfied by direct
payment of the required amounts by the Guarantor to the Holders or by causing
the Issuer to pay such amounts to the Holders.

         SECTION 502.   WAIVER OF NOTICE AND DEMAND.

         The Guarantor hereby waives notice of acceptance of the Guarantee
Agreement and of any liability to which it applies or may apply, presentment,
demand for payment, any right to require a proceeding first against

                                         -11-



the Guarantee Trustee, Issuer or any other Person before proceeding against the
Guarantor, protest, notice of nonpayment, notice of dishonor, notice of
redemption and all other notices and demands.

         SECTION 503.   OBLIGATIONS NOT AFFECTED.

         The obligations, covenants, agreements and duties of the Guarantor
under this Guarantee Agreement shall in no way be affected or impaired by reason
of the happening from time to time of any of the following:

         (a)  the release or waiver, by operation of law or otherwise, of the
    performance or observance by the Issuer of any express or implied
    agreement, covenant, term or condition relating to the Preferred Securities
    to be performed or observed by the Issuer;

         (b)  the extension of time for the payment by the Issuer of all or any
    portion of the Distributions (other than an extension of time for payment
    of Distributions that results from the extension of any interest payment
    period on the Debentures as so provided in the Indenture), Redemption
    Price, Liquidation Distribution or any other sums payable under the terms
    of the Preferred Securities or the extension of time for the performance of
    any other obligation under, arising out of, or in connection with, the
    Preferred Securities;

         (c)  any failure, omission, delay or lack of diligence on the part of
    the Holders to enforce, assert or exercise any right, privilege, power or
    remedy conferred on the Holders pursuant to the terms of the Preferred
    Securities, or any action on the part of the Issuer granting indulgence or
    extension of any kind;

         (d)  the voluntary or involuntary liquidation, dissolution, sale of
    any collateral, receivership, insolvency, bankruptcy, assignment for the
    benefit of creditors, reorganization, arrangement, composition or
    readjustment of debt of, or other similar proceedings affecting, the Issuer
    or any of the assets of the Issuer;

         (e)  any invalidity of, or defect or deficiency in, the Preferred
    Securities;

         (f)  the settlement or compromise of any obligation guaranteed hereby
    or hereby incurred; or

         (g)  any other circumstance whatsoever that might otherwise constitute
    a legal or equitable discharge or defense of a guarantor, it being the
    intent of this Section 503 that the obligations of the Guarantor hereunder
    shall be absolute and unconditional under any and all circumstances.

There shall be no obligation of the Holders to give notice to, or obtain the
consent of, the Guarantor with respect to the happening of any of the foregoing.

                                         -12-



         SECTION 504.   RIGHTS OF HOLDERS.

         The Guarantor expressly acknowledges that:  (i) this Guarantee
Agreement will be deposited with the Guarantee Trustee to be held for the
benefit of the Holders; (ii) the Guarantee Trustee has the right to enforce this
Guarantee Agreement on behalf of the Holders; (iii) the Holders of a Majority in
liquidation preference of the Preferred Securities have the right to direct the
time, method and place of conducting any proceeding for any remedy available to
the Guarantee Trustee in respect of this Guarantee Agreement or exercising any
trust or power conferred upon the Guarantee Trustee under this Guarantee
Agreement; and (iv) any Holder may institute a legal proceeding directly against
the Guarantor to enforce its rights under this Guarantee Agreement, without
first instituting a legal proceeding against the Guarantee Trustee, the Issuer
or any other Person.

         SECTION 505.   GUARANTEE OF PAYMENT.

         This Guarantee Agreement creates a guarantee of payment and not of
collection.  This Guarantee Agreement will not be discharged except by payment
of the Guarantee Payments in full (without duplication of amounts theretofore
paid by the Issuer) or upon distribution of Debentures to Holders as provided in
the Trust Agreement.

         SECTION 506.   SUBROGATION.

         The Guarantor shall be subrogated to all (if any) rights of the
Holders against the Issuer in respect of any amounts paid to the Holders by the
Guarantor under this Guarantee Agreement and shall have the right to waive
payment by the Issuer pursuant to Section 501; provided, HOWEVER, that the
Guarantor shall not (except to the extent required by mandatory provisions of
law) be entitled to enforce or exercise any rights which it may acquire by way
of subrogation or any indemnity, reimbursement or other agreement, in all cases
as a result of payment under this Guarantee Agreement, if, at the time of any
such payment, any amounts are due and unpaid under this Guarantee Agreement.  If
any amount shall be paid to the Guarantor in violation of the preceding
sentence, the Guarantor agrees to hold such amount in trust for the Holders and
to pay over such amount to the Holders.

         SECTION 507.   INDEPENDENT OBLIGATIONS.

         The Guarantor acknowledges that its obligations hereunder are
independent of the obligations of the Issuer with respect to the Preferred
Securities and that the Guarantor shall be liable as principal and as debtor
hereunder to make Guarantee Payments pursuant to the terms of this Guarantee
Agreement notwithstanding the occurrence of any event referred to in subsections
(a) through (g), inclusive, of Section 503 hereof.

                                         -13-



                                      ARTICLE VI
                             COVENANTS AND SUBORDINATION

         SECTION 601.  SUBORDINATION.

    This Guarantee Agreement will constitute an unsecured obligation of the
Guarantor and will rank subordinate and junior in right of' payment to all
Senior Debt of the Guarantor.

         SECTION 602.  PARI PASSU GUARANTEES.

    This Guarantee Agreement shall rank pari passu with any similar Guarantee
Agreements issued by the Guarantor on behalf of the holders of Preferred
Securities issued by NVP Capital II.


                                     ARTICLE VII
                                     TERMINATION

         SECTION 701.   TERMINATION.

         This Guarantee Agreement shall terminate and be of no further force
and effect upon (i) full payment of the Redemption Price of all Preferred
Securities, (ii) the distribution of Debentures to the Holders in exchange for
all of the Preferred Securities or (iii) full payment of the amounts payable in
accordance with the Trust Agreement upon liquidation of the Issuer.
Notwithstanding the foregoing, this Guarantee Agreement will continue to be
effective or will be reinstated, as the case may be, if at any time any Holder
must restore payment of any sums paid with respect to Preferred Securities or
this Guarantee Agreement.


                                     ARTICLE VIII
                                    MISCELLANEOUS

         SECTION 801.   SUCCESSORS AND ASSIGNS.

         All guarantees and agreements contained in this Guarantee Agreement
shall bind the successors, assigns, receivers, trustees and representatives of
the Guarantor and shall inure to the benefit of the Holders of the Preferred
Securities then outstanding.  Except in connection with a consolidation, merger
or sale involving the Guarantor that is permitted under Article Eight of the
Indenture and pursuant to which the assignee agrees in writing to perform the
Guarantor's obligations hereunder, the Guarantor shall not assign its
obligations hereunder.

                                         -14-



         SECTION 802.   AMENDMENTS.

         Except with respect to any changes which do not adversely affect the
rights of the Holders in any material respect (in which case no consent of the
Holders will be required), this Guarantee Agreement may only be amended with the
prior approval of the Holders of not less than a Majority in liquidation
preference of all the outstanding Preferred Securities.  The provisions of
Article VI of the Trust Agreement concerning meetings of the Holders shall apply
to the giving of such approval.

         SECTION 803.  NOTICES.

         Any notice, request or other communication required or permitted to be
given hereunder shall be in writing, duly signed by the party giving such
notice, and delivered, telecopied or mailed by first class mail as follows:

         (a)  if given to the Guarantor, to the address set forth below or such
    other address, facsimile number or to the attention of such other Person as
    the Guarantor may give notice of to the Holders:

              Nevada Power Company
              6226 West Sahara Avenue
              Las Vegas, Nevada 89102

              Facsimile No.: (702) 367-5684
              Attention: Treasurer

with a copy to:
              Nevada Power Company
              6226 West Sahara Avenue
              Las Vegas, Nevada 89102

              Facsimile No.:
              Attention: General Counsel

         (b)  if given to the Issuer, in care of the Guarantee Trustee, at the
    Issuer's (and the Guarantee Trustee's) address set forth below or such
    other address, facsimile number or to the attention of such other Person as
    the Guarantee Trustee on behalf of the Issuer may give notice to the
    Holders:

              NVP Capital I c/o Nevada Power Company
              6226 West Sahara Avenue
              Las Vegas, Nevada 89102

                                         -15-



              Facsimile No: (702) 367-5684
              Attention:  Treasurer

 with a copy to:


              Facsimile No.:
              Attention: Corporate Trust Department

         (c)   if given to any Holder, at the address set forth on the books
    and records of the Issuer.

         All notices hereunder shall be deemed to have been given when received
in person, telecopied with receipt confirmed, or mailed by first class mail,
postage prepaid, except that if a notice or other document is refused delivery
or cannot be delivered because of a changed address of which no notice was
given, such notice or other document shall be deemed to have been delivered on
the date of such refusal or inability to deliver.

         SECTION 804.  BENEFIT.

         This Guarantee Agreement is solely for the benefit of the Holders and
is not separately transferable from the Preferred Securities.

         SECTION 805.   INTERPRETATION.

    In this Guarantee Agreement, unless the context otherwise requires:

         (a)  capitalized terms used in this Guarantee Agreement but not
    defined in the preamble hereto have the respective meanings assigned to
    them in Section 101;

         (b)  a term defined anywhere in this Guarantee Agreement has the same
    meaning throughout;

         (c)  all references to "the Guarantee Agreement" or "this Guarantee
    Agreement" are to this Guarantee Agreement as modified, supplemented or
    amended from time to time;

         (d)  all references in this Guarantee Agreement to Articles and
    Sections are to Articles and Sections of this Guarantee Agreement unless
    otherwise specified;

         (e)  a term defined in the Trust Indenture Act has the same meaning
    when used in this Guarantee Agreement unless otherwise defined in this
    Guarantee Agreement or unless the context otherwise requires;

                                         -16-



         (f)  a reference to the singular includes the plural and vice versa;
    and

         (g)   the masculine, feminine or neuter genders used herein shall
    include the masculine, feminine and neuter genders.

         SECTION 806.   GOVERNING LAW.

         THIS GUARANTEE AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED AND
INTERPRETED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD
TO THE CONFLICT OF LAW PRINCIPLES THEREOF.

         This instrument may be executed in any number of counterparts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument.

         THIS GUARANTEE AGREEMENT is executed as of the day and year first
above written.

                        NEVADA POWER COMPANY

                        By:  ___________________________________________
                             Name:
                             Title:


                        ___________________________, as
                        Guarantee Trustee

                        By:  ___________________________________________
                             Name:
                             Title:

                                         -17-