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FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person*
CLARK SUSAN F

(Last)(First)(Middle)
P O BOX 30150

(Street)
RENONV89520

(City)(State)(Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
10/30/2008
3. Issuer Name and Ticker or Trading Symbol
SIERRA PACIFIC RESOURCES /NV/ [SRP]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
COMMON STOCK 0
D
 
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)4. Conversion or Excercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
Britta Carlson Power of Attorney for Susan F. Clark11/03/2008
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

POWER OF ATTORNEY


Know all by these presents that the undersigned
hereby constitutes and appoints Paul J. Kaleta and Britta Carlson, 
and each of them collectively Or individually, as his or her true
and lawful attorney-in-fact to:

(1)execute for and on behalf of the undersigned,
Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities 
Exchange Act of 1934 and the rules thereunder;

(2)do and perform any and all acts for and on 
behalf of theundersigned which may be necessary or desirable to 
complete the execution of any such Forms 3, 4 or 5 and timely filings
of such forms with the United States Securities and Exchange Commission
and any other authority; and

(3)take any other action of any type whatsoever
in connection with the foregoing which, in the opinion of such 
attorney-in-fact, may be of benefit to, in the best interest of, or
legally required by, the undersigned, it being understood that the 
documents executed by such attorney in fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form
and shall contain such terms and conditions as such attorney-in-fact
may approve in his discretion.

The undersigned hereby grants to such attorney-in-fact
full power and authority to do and perform all and every act and thing
whatsoever requisite, necessary and proper to be done in the exercise 
of any of the rights and powers herein granted, as fully to all intents
and purposes as such attorney-in-fact might or could do if personally
present, with full power of substitution or revocation, hereby ratifying
and confirming all that such attorney-in-fact, or his substitute or
substitutes, shall lawfully do or cause to be done by virtue of this
Power of Attorney and the rights and powers herein granted.  The 
undersigned acknowledgesthat the foregoing attorney-in-fact, in serving
in such capacity at the request of the undersigned, is not assuming any
of the undersigned's responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934.

IN WITNESS WHEREOF, the undersigned has caused this Power
of Attorney to be executed as of the 31 day of October, 2008.

/s/Susan F. Clark


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