Exhibit 4(B)

                              NEVADA POWER COMPANY

                              OFFICER'S CERTIFICATE

                                October 18, 2001

         I, the undersigned officer of Nevada Power Company (the "Company"), do
hereby certify that I am an Authorized Officer of the Company as such term is
defined in the Indenture (as defined herein). I am delivering this certificate
pursuant to the authority granted in the Board Resolutions of the Company dated
August 7, 2001, and Sections 1.04, 2.01, 3.01, 4.01(a) and 4.02(b)(i) of the
General and Refunding Mortgage Indenture dated as of May 1, 2001 (the "Mortgage
Indenture"), as supplemented by the First Supplemental Indenture dated as of May
1, 2001, and as further supplemented and amended by the Second Supplemental
Indenture dated as of October 1, 2001 (the "Supplemental Indenture"; and
collectively with the Mortgage Indenture, as supplemented by said First
Supplemental Indenture, the "Indenture"), between the Company and The Bank of
New York, as Trustee (the "Trustee"). Terms used herein and not otherwise
defined herein shall have the meanings assigned to them in the Indenture unless
the context clearly requires otherwise. Based upon the foregoing, I hereby
certify on behalf of the Company as follows:

         1.     The terms and conditions of the Securities described in this
Officer's Certificate are as follows (the lettered subdivisions set forth in
this Paragraph 1 corresponding to the lettered subdivisions of Section 3.01 of
the Mortgage Indenture):

         (a)    The Securities of the second series to be issued under the
         Indenture shall be designated "General and Refunding Mortgage Notes,
         Floating Rate, Series B, due October 15, 2003" (the "Series B Notes").

         (b)    There shall be no limit upon the aggregate principal amount of
         the Series B Notes that may be authenticated and delivered under the
         Indenture. The Series B Notes shall be initially authenticated and
         delivered in the aggregate principal amount of $140,000,000.

         (c)    Interest on the Series B Notes shall be payable to the Persons
         in whose names such Securities are registered at the close of business
         on the Regular Record Date for such interest, except as otherwise
         expressly provided in the form of such Securities attached hereto as
         Exhibit A.
         ---------

         (d)    The Series B Notes shall mature and the principal thereof shall
         be due and payable together with all accrued and unpaid interest
         thereon on October 15, 2003.

         (e)    The Series B Notes shall bear interest as provided in the form
         of such Securities attached hereto as Exhibit A.
                                               ---------

         (f)    The Corporate Trust Office of The Bank of New York in New York,
         New York shall be the place at which (i) the principal of, premium and
         interest on, the Series B Notes shall be payable, (ii) registration of
         transfer of the Series B Notes may be effected, (iii) exchanges of the
         Series B Notes may be effected and (iv) notices and demands to or





         upon the Company in respect of the Series B Notes and the Indenture may
         be served; and The Bank of New York shall be the Security Registrar for
         the Series B Notes; provided, however, that the Company reserves the
                             --------  -------
         right to change, by one or more Officer's Certificates, any such place
         or the Security Registrar; and provided, further, that the Company
         reserves the right to designate, by one or more Officer's Certificates,
         its principal office in Las Vegas, Nevada as any such place or itself
         as the Security Registrar; provided, however, that there shall be only
         a single Security Registrar for the Series B Notes.

                The Calculation Agent for the Series B Notes shall be The Bank
         of New York, or its successor as Calculation Agent. At any time, the
         Company may designate a successor Calculation Agent, who may be any
         person or entity who is eligible to be a successor Trustee or
         co-trustee under the Indenture or who (a) is in fact independent, (b)
         does not have any direct material financial interest in the Company or
         in any affiliate of the Company, (c) is not connected with the Company
         as an officer, employee, promoter, underwriter, partner, director or
         person performing similar functions, (d) is selected by an Authorized
         Officer and (e) is approved by the Trustee in the exercise of
         reasonable care.

         (g)    Not applicable.

         (h)    Not applicable.

         (i)    The Series B Notes are issuable only in denominations of
         $100,000 and integral multiples of $1,000 in excess thereof.

         (j)    Not applicable.

         (k)    Not applicable.

         (l)    Not applicable.

         (m)    See subsection (e) above.

         (n)    Not applicable.

         (o)    Not applicable.

         (p)    Not applicable.

         (q)    Certificates representing Series B Notes offered and sold in
         reliance on Rule 144A of the Securities Act of 1933, as amended (the
         "Securities Act"), and only such Series B Notes, shall, except as
         otherwise provided hereafter, be in the form of a permanent certificate
         in global form (a "Global Certificate") registered in the name of Cede
         & Co., as nominee for The Depository Trust Company (the "Depositary"),
         to be delivered to the Depositary or its custodian, by or on behalf of
         the Company and shall bear the Global Certificate legends set forth on
         Exhibit A hereto. The Global Certificate shall not be transferable or
         ---------
         exchangeable, nor shall any purported transfer be registered, except as
         follows:

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                  (i)     the Global Certificate may be transferred in whole,
                  and appropriate registration of transfer effected, if such
                  transfer is by such nominee to the Depositary, or by the
                  Depositary to another nominee thereof, or by any nominee of
                  the Depositary to any other nominee thereof, or by the
                  Depositary or any nominee thereof to any successor securities
                  depositary or any nominee thereof; and

                  (ii)    the Global Certificate may be exchanged for Series B
                  Notes in the form of definitive certificates, registered in
                  the respective names of the beneficial owners thereof, and
                  thereafter shall be transferable without restriction, if:

                           (A)     the Depositary, or any successor securities
                           depositary, shall have notified the Company and the
                           Trustee that (i) it is unwilling or unable to
                           continue to act as securities depositary with respect
                           to the Series B Notes, (ii) has ceased to be
                           qualified to act as such, or (iii) has ceased to be a
                           clearing agency registered under the Exchange Act,
                           and the Trustee shall not have been notified by the
                           ---
                           Company within ninety (90) days of the identity of a
                           successor securities depositary with respect to such
                           Securities;

                           (B)     the Company shall have delivered to the
                           Trustee a Company Order to the effect that the
                           Company has elected to terminate the book-entry
                           system; or

                           (C)     an Event of Default shall have occurred and
                           be continuing.

                  Unless and until definitive, fully registered certificates
          shall have been issued to beneficial owners as provided in subclause
          (ii) of this clause (g) of Paragraph 1 hereof:

                           (a)     the provisions of this clause (q) shall be in
                   full force and effect;

                           (b)     the Company and the Trustee and any agent of
                   either shall be entitled to deal with the Depositary for all
                   purposes of the Indenture and such Series B Notes (including
                   payment of principal of, and premium and interest thereon,
                   the giving of notice and receiving approvals, votes or
                   consents thereunder) as the Holder of such Securities and the
                   sole holder of the Global Certificate and shall have no
                   obligation to the beneficial owners of such Securities;

                           (c)     to the extent that the provisions of clause
                   (q) of paragraph 1 conflicts with any other provisions of the
                   Indenture or the Series B Notes, the provisions of this
                   clause (q) of Paragraph 1 shall control; and

                           (d)     the rights of such beneficial owners shall be
                   exercised only through the Depositary and shall be limited to
                   those established by law and agreements between such
                   beneficial owners or of any agent member of, or direct or
                   indirect participants in, the Depositary and the Depositary
                   or the depositary participants.

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                   The Depositary will make book-entry transfers among
                   depositary participants and receive and transmit payments of
                   principal, premium and interest, if any, to such depositary
                   participants.

                   Notwithstanding the foregoing, with respect to any Global
          Certificate, nothing contained herein or in the Indenture shall
          prevent the Company, the Trustee or any agent of the Company or the
          Trustee, from giving effect to any written certification, proxy or
          other authorization furnished by the Depositary (or its nominee), as a
          Holder, with respect to such Global Certificate or impair, as between
          such Depositary and the related beneficial owner, the operation of
          customary practices governing the exercise of rights of the Depositary
          (or its nominee) as Holder of such global certificate. Except for the
          Global Certificate, any and all of the Series B Notes shall be in the
          form of a non-global, definitive physical certificate.

                   Certificates representing Series B Notes offered and sold in
          reliance on Rule 501(a)(1), (2), (3) or (7) under the Securities Act
          shall be in the form of a non-global, definitive physical certificate
          registered in the name of the institutional accredited investor (the
          "IAI") purchasing such notes (the "IAI Notes"). The IAI Notes shall be
          delivered to each IAI in the manner specified by such IAI upon receipt
          by the Company of a satisfactorily completed purchaser's letter in the
          form attached hereto as Exhibit B. The IAI Notes shall not be
                                  ---------
          transferable or exchangeable, nor shall any purported transfer be
          registered, except upon presentation of evidence satisfactory to the
          Company and the transfer agent that such Notes are being offered,
          resold, pledged or otherwise transferred only (i) in the United States
          to a person whom the seller reasonably believes is a qualified
          institutional buyer in a transaction meeting the requirements of Rule
          144A, (ii) outside the U.S. in a transaction complying with the
          provisions of Rule 904 under the Securities Act, (iii) pursuant to an
          exemption from registration under the Securities Act provided by Rule
          144 (if available) or (iv) pursuant to an effective registration
          statement under the Securities Act, in each of cases (i) through (iv)
          in accordance with any applicable securities laws of any State of the
          United States. The IAI Notes shall bear the legends for restricted
          securities set forth in Exhibit A hereto and the following additional
                                  ---------
          legend:

              "IN CONNECTION WITH ANY TRANSFER, THE HOLDER WILL DELIVER TO THE
              COMPANY AND THE SECURITIES REGISTRAR AND/OR TRANSFER AGENT SUCH
              CERTIFICATES AND OTHER INFORMATION AS THE COMPANY AND SUCH
              SECURITIES REGISTRAR AND/OR TRANSFER AGENT MAY REASONABLY REQUIRE
              TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE FOREGOING
              RESTRICTIONS."

         (r)     Not applicable.

         (s)     The Series B Notes have not been registered under the
         Securities Act and may not be offered, sold or otherwise transferred in
         the absence of such registration or an applicable exemption therefrom.
         No service charge shall be made for the registration of transfer or
         exchange of the Series B Notes, or any Tranche thereof; provided,
         however,

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         that the Company may require payment of a sum sufficient to cover
         any tax or other governmental charge payable in connection with the
         exchange or transfer.

         (t)     For purposes of the Series B Notes, "Business Day" shall mean
         any day, other than Saturday or Sunday, on which commercial banks and
         foreign exchange markets are open for business, including dealings in
         deposits in U.S. dollars, in New York.

         (u)     Notwithstanding the provisions of Section 9.01 of the
         Indenture, no Series B Note shall be deemed to have been paid, and the
         indebtedness of the Company in respect thereof deemed to have been
         satisfied and discharged as contemplated therein, unless the Company
         shall have delivered to the Trustee either:

                  (i)     an opinion of counsel in the United States reasonably
                  acceptable to the Trustee confirming that (A) the Company has
                  received from, or there has been published by, the Internal
                  Revenue Service a ruling or (B) since the date of the
                  Indenture, there has been a change in the applicable federal
                  income tax law, in either case to the effect that, and based
                  thereon such opinion of counsel shall confirm that, the
                  Holders of the outstanding Bonds will not recognize income,
                  gain or loss for federal income tax purposes as a result of
                  such defeasance and will be subject to federal income tax on
                  the same amounts, in the same manner and at the same times as
                  would have been the case if such defeasance had not occurred;
                  or

                  (ii)    (A) an instrument wherein the Company, notwithstanding
                  the satisfaction and discharge of its Indebtedness in respect
                  of the Bonds, shall assume the obligation (which shall be
                  absolute and unconditional) to irrevocably deposit with the
                  Trustee such additional sums of money, if any, or additional
                  Government Obligations, if any, or any combination thereof, at
                  such time or times, as shall be necessary, together with the
                  money and/or Government Obligations theretofore so deposited,
                  to pay when due the principal of and premium, if any, and
                  interest due and to become due on such bonds or portions
                  thereof; provided, however, that such instrument may state
                  that the obligation of the Company to make additional deposits
                  as aforesaid shall be subject to the delivery to the Company
                  by the Trustee of a notice asserting the deficiency
                  accompanied by an opinion of an independent public accountant
                  of nationally recognized standing showing the calculation
                  thereof; and (B) an opinion of tax counsel in the United
                  States reasonably acceptable to the Trustee to the effect that
                  the Holders of the outstanding Bonds will not recognize
                  income, gain or loss for federal income tax purposes as a
                  result of such defeasance and will be subject to federal
                  income tax on the same amounts, in the same manner and at the
                  same times as would have been the case if such defeasance had
                  not occurred.

         The Series B Notes shall have such other terms and provisions as are
provided in the form thereof attached hereto as Exhibit A, and shall be issued
                                                ---------
in substantially such form.

                                      5



         2.     The undersigned has read all of the covenants and conditions
contained in the Indenture, and the definitions in the Indenture relating
thereto, relating to the issuance of the Series B Notes and in respect of
compliance with which this certificate is made.

                The statements contained in this certificate are based upon
the familiarity of the undersigned with the Indenture, the documents
accompanying this certificate, and upon discussions by the undersigned with
officers and employees of the Company familiar with the matters set forth
herein.

                In the opinion of the undersigned, he has made such
examination or investigation as is necessary to enable him to express an
informed opinion as to whether or not such covenants and conditions have been
complied with.

                In the opinion of the undersigned, such conditions and
covenants have been complied with.

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         IN WITNESS WHEREOF, the undersigned has executed this Officer's
Certificate as of the date first written above.

                                  By: _________________________________________
                                      Richard K. Atkinson
                                      Treasurer and Investor Relations Officer

Acknowledged and Received on
October ___, 2001

THE BANK OF NEW YORK,
as Trustee

By:   ___________________________________________
Name: ___________________________________________
Title:___________________________________________

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                                    Exhibit A
                                    ---------

                             Form of Series B Notes



                                    Exhibit B
                                    ---------

             Form of Letter to be Delivered by Accredited Investors

Nevada Power Company
P.O. Box 230
6226 W. Sahara Avenue
Las Vegas, Nevada  89146

[Securities Registrar]
 --------------------

Dear Sirs:

         We are delivering this letter in connection with an offering of General
and Refunding Mortgage Notes, Floating Rate, Series B, due October 15, 2003,
(the "Securities") of Nevada Power Company, a Nevada corporation (the
"Company"), all as described in the Confidential Offering Memorandum (the
"Offering Memorandum") relating to the offering.

         We hereby confirm that:

              (i)     we are an "accredited investor" within the meaning of Rule
         501(a)(1), (2) or (3) under the Securities Act of 1933, as amended (the
         "Securities Act"), or an entity in which all of the equity owners are
         accredited investors within the meaning of Rule 501(a)(1), (2) or (3)
         under the Securities Act (an "Institutional Accredited Investor");

              (ii)    (A) any purchase of the Securities by us will be for our
         own account or for the account of one or more other Institutional
         Accredited Investors or as fiduciary for the account of one or more
         trusts, each of which is an "accredited investor" within the meaning of
         Rule 501(a)(7) under the Securities Act and for each of which we
         exercise sole investment discretion or (B) we are a "bank", within the
         meaning of Section 3(a)(2) of the Securities Act, or a "savings and
         loan association" or other institution described in Section 3(a)(5)(A)
         of the Securities Act that is acquiring the Securities as fiduciary for
         the account of one or more institutions for which we exercise sole
         investment discretion,

              (iii)   in the event that we purchase any of the Securities, we
         will acquire Securities having a minimum purchase price of not less
         than $100,000 for our own account or for any separate account for which
         we are acting;

              (iv)    we have such  knowledge and  experience  in financial  and
         business  matters that we are capable of evaluating the merits and
         risks of purchasing the Securities;

              (v)     we are not acquiring the Securities with a view to
         distribution thereof or with any present intention of offering or
         selling any of the Securities, except inside the United States in
         accordance with Rule 144A under the Securities Act or outside the
         United States under Regulation S under the Securities Act, as provided
         below; provided

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         that the disposition of our property and the property of any
         accounts for which we are acting as fiduciary shall remain at all times
         within our control; and

              (vi)    we have received a copy of the Offering Memorandum
         relating to the offering of the Securities and acknowledge that we have
         had access to financial and other information, and have been afforded
         the opportunity to ask questions of representatives of the Company and
         receive answers thereto, as we deem necessary in connection with our
         decision to purchase the Securities.

         We understand that the Securities are being offered in a transaction
not involving any public offering within the United States within the meaning of
the Securities Act and that the Securities have not been registered under the
Securities Act, and we agree, on our own behalf and on behalf of each account
for which we acquire any Securities, that if in the future we decide to resell,
pledge or otherwise transfer the Securities, the Securities may be offered,
resold, pledged or otherwise transferred only (i) in the United States to a
person who we reasonably believe is a "qualified institutional buyer" (as
defined in Rule 144A under the Securities Act) in a transaction meeting the
requirements of Rule 144A, (ii) outside the United States in a transaction in
accordance with Rule 904 under the Securities Act, (iii) under an exemption from
registration under the Securities Act provided by Rule 144 thereunder (if
available) or (iv) under an effective registration statement under the
Securities Act, in each of cases (i) through (iv), subject to any applicable
securities laws of any State of the United States or any other applicable
jurisdiction. We understand that the registrar and transfer agent for the
Securities will not be required to accept for registration of transfer any
Securities acquired by us, except upon presentation of evidence satisfactory to
the Company and the transfer agent that the foregoing restrictions on transfer
have been complied with.

         We acknowledge that you, the Company and others will rely upon our
confirmations, acknowledgements and agreements set forth herein, and we agree to
notify you promptly in writing if any of our representations or warranties
herein ceases to be accurate and complete.

                                     10



         THIS LETTER SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE
LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF
LAWS.

Date:______________________                    _________________________________
                                               (Name of Purchaser)

                                              By: ______________________________
                                                      Name:
                                                      Title:
                                                      Address:

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