EXHIBIT 4.12




_____________________________________________________________________________





                               GUARANTEE AGREEMENT

                                     Between



                              NEVADA POWER COMPANY
                                 (as Guarantor)



                                       and



   
                        IBJ SCHRODER BANK & TRUST COMPANY
                             (as Guarantee Trustee)
    



                                   dated as of


   
                                  March 1, 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 . . . . . . . . . . . . . . . . . . . . . . . . 4
    
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 . . . . . . . . . . . . . . . . . . . 5
Section 207.   Event of Default; Notice. . . . . . . . . . . . . . . . . . . . 5
    
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
    

                                   ARTICLE IV

                                GUARANTEE TRUSTEE

   
SECTION 401.   Guarantee Trustee; Eligibility. . . . . . . . . . . . . . . . . 9
SECTION 402.  Appointment, Removal and Resignation of  the Guarantee Trustee .10
    

                                    ARTICLE V

                                    GUARANTEE

   
SECTION 501.   Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . .11
    
SECTION 502.   Waiver of Notice and Demand . . . . . . . . . . . . . . . . . .11
SECTION 503.   Obligations Not Affected. . . . . . . . . . . . . . . . . . . .11


                                       -i-



                                TABLE OF CONTENTS
                                -----------------
                                   (continued)

                                                                            PAGE
                                                                            ----

SECTION 504.   Rights of Holders . . . . . . . . . . . . . . . . . . . . . . .12
SECTION 505.   Guarantee of Payment. . . . . . . . . . . . . . . . . . . . . .12
SECTION 506.   Subrogation . . . . . . . . . . . . . . . . . . . . . . . . . .12

                                   ARTICLE VI

                           COVENANTS AND SUBORDINATION

SECTION 601.  Subordination. . . . . . . . . . . . . . . . . . . . . . . . . .13
SECTION 602.  Pari Passu Guarantees. . . . . . . . . . . . . . . . . . . . . .13

                                   ARTICLE VII

                                   TERMINATION
SECTION 701.   Termination . . . . . . . . . . . . . . . . . . . . . . . . . .13

                                  ARTICLE VIII

                                  MISCELLANEOUS

SECTION 801.   Successors and Assigns. . . . . . . . . . . . . . . . . . . . .14
SECTION 802.   Amendments. . . . . . . . . . . . . . . . . . . . . . . . . . .14
SECTION 803.  Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
SECTION 804.  Benefit. . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
SECTION 805.   Interpretation. . . . . . . . . . . . . . . . . . . . . . . . .15
   
SECTION 806.   Governing Law . . . . . . . . . . . . . . . . . . . . . . . . .16
    


                                      -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 March 1, 1997, is executed and
delivered by Nevada Power Company, a Nevada corporation (the "Guarantor"), and
IBJ Schroder Bank & Trust Company, a banking corporation  organized under the
laws of New York, 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 March 1, 1997 among the Trustees named therein
and Nevada Power Company, as Depositor, 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 ownership interests in the Issuer
and having the terms set forth in the Trust Agreement;

          WHEREAS, the Preferred Securities will be sold by or on behalf of 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 Delaware Trust Capital Management, Inc., as Property Trustee
under the Trust Agreement, as trust assets; and

          WHEREAS, in order to enhance the value of the Preferred Securities the
Guarantor desires to irrevocably and unconditionally  agree, to the extent set
forth herein, to pay to the Holders (as defined herein) 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 of Debentures, 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.
    



                                    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 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


                                       -1-



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
obligation of the type referred to in clauses (i) through (v) of another Person
and all dividends of another Person the payment of which, in either case, such
Person has guaranteed or is responsible or liable, directly or indirectly, as
obligor or otherwise.
    

          "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 accumulated and unpaid
Distributions that are required to be paid on the Preferred Securities, if and
to the extent the Property Trustee has available at such time in the Payment
Account funds sufficient to make such payment, (ii) the Redemption Price with
respect to the Preferred Securities called for redemption by the Issuer but only
to the extent the Property Trustee has available, when due, in the Payment
Account funds sufficient to make such payment, and (iii) upon a voluntary or
involuntary termination, winding-up or dissolution of the Issuer (unless
Debentures are distributed to the Holders, the lesser of (a) the aggregate of
the Liquidation Amount and all accrued and unpaid Distributions on the Preferred
Securities to the date of payment but only to the extent the Property Trustee
has available in the Payment Account funds sufficient to make such payment 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 IBJ Schroder Bank & Trust Company, 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.


                                       -2-



   
     "Holder" means any holder, as registered on the books and records of the
Issuer, of any Preferred Securities then outstanding; 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 or any Affiliate of the Guarantor.
    

   
          "Indenture" means the Junior Subordinated Indenture dated as of March
1, 1997, as supplemented and amended, between the Guarantor and IBJ Schroder
Bank & Trust Company, as trustee, pursuant to which the Debentures are issued.
    

          "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.

   
          "Officers' Certificate" means, with respect to any Person, a
certificate signed by the Chairman of the Board 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 to the
Guarantee Trustee with respect to compliance with a condition precedent or a
covenant provided for in this Guarantee Agreement shall include:

          (1)  a statement that the persons making such certificate or opinion
has read such condition or covenant;

          (2)  a brief statement as to the nature and scope of the examination
or investigation upon which the statements or opinions contained in such
certificate are based;

          (3)  a statement that, in the opinion of such person, he has made such
examination or investigation as is necessary to enable him to express an
informed opinion as to whether or not such covenant or condition has been
complied with; and

          (4)  a statement as to whether or not, in the opinion of such persons,
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 or corporation, trust, unincorporated organization, 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, 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


                                       -3-



connection with the obtaining of goods, materials or services and (f) Debt
issued under the Indenture.

          "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.

          (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 February 15 of each year, commencing February 15, 1998,
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
    


                                       -4-



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 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 (as set forth in
     Section 2.07(b)) 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 either (i) a Responsible Officer of the
     Guarantee Trustee shall have actual knowledge, or (2) 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


                                       -5-



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 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 known (as set forth in Section 207(b)) to the Guarantee
     Trustee 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,


                                       -6-



               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 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, Officers' 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


                                       -7-



          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 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.



                                       -8-



          (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 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.


                                       -9-



          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 and the Guarantee Trustee.
    

          (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 other than
the defense of payment.  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 the
Guarantee Trustee, Issuer or any other Person before proceeding against


                                      -10-



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 or the Guarantee Trustee to give
notice to, or obtain the consent of, the Guarantor with respect to the happening
of any of the foregoing.
    

          SECTION 504.   RIGHTS OF HOLDERS.


                                      -11-



          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.

                                   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.


                                      -12-



          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.

          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 a Majority in liquidation preference of the
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:


                                      -13-



          (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) 367-5864
               Attention: Treasurer
    

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

   
               Facsimile No.: (702) 367-5629
               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
               Facsimile No: (702) 367-5864
               Attention:  Treasurer

   
 with a
 copy to:      IBJ Schroder Bank & Trust Company
               One State Street
               New York, New York 10004
               Facsimile No.: (212) 858-2952
               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.


                                      -14-



          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;

          (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.
    


                                      -15-



          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:


                         IBJ SCHRODER BANK & TRUST COMPANY, as
                         Guarantee Trustee

                         By:  ___________________________________________
                              Name:
                              Title:


                                      -16-