SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) February 16, 2007

Commission File Number	Registrant, State of Incorporation, Address of Principal Executive Offices and Telephone Number	I.R.S. Employer Identification Number
1-08788	SIERRA PACIFIC RESOURCES	88-0198358
	Nevada
	P.O. Box 10100 (6100 Neil Road)
	Reno, Nevada 89520-0400 (89511)
	(775) 834-4011
2-28348	NEVADA POWER COMPANY	88-0420104
	Nevada
	6226 West Sahara Avenue
	Las Vegas, Nevada 89146
	(702) 367-5000
0-00508	SIERRA PACIFIC POWER COMPANY	88-0044418
	Nevada
	P.O. Box 10100 (6100 Neil Road)
	Reno, Nevada 89520-0400 (89511)
	(775) 834-4011

None

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act (17 CFR 240.14a-12(b))

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

TABLE OF CONTENTS

Item 2.02	Results of Operations and Financial Condition
Item 9.01	Financial Statements and Exhibits
Signatures
EX-99.1 Press release dated February 16, 2007

Item 2.02 Results of Operations and Financial Condition

Today, Sierra Pacific Resources and its two utility subsidiaries, Nevada Power Company and Sierra Pacific Power Company, issued a press release disclosing financial results for the fiscal year ended December 31, 2006. The text of the release is furnished herewith as Exhibit 99.1.

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits — The following exhibit is furnished with this Form 8-K:

          EX-99.1 — Press Release dated February 16, 2007

SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrants have each duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorized.

	Sierra Pacific Resources (Registrant)
Date: February 16, 2007	By:	/s/ John E. Brown
		John E. Brown
		Controller

	Nevada Power Company (Registrant)
Date: February 16, 2007	By:	/s/ John E. Brown
		John E. Brown
		Controller

	Sierra Pacific Power Company (Registrant)
Date: February 16, 2007	By:	/s/ John E. Brown
		John E. Brown
		Controller