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) April 4, 2002 ------------- Registrant, State of Incorporation, Address of Commission File Principal Executive Offices and Telephone I.R.S. employer Number Number Identification Number 1-8788 SIERRA PACIFIC RESOURCES 88-0198358 P.O. Box 10100 (6100 Neil Road) Reno, Nevada 89520-0400 (89511) (775) 834-4011 1-4698 NEVADA POWER COMPANY 88-0045330 6226 West Sahara Avenue Las Vegas, Nevada 89146 (702) 367-5000 0-508 SIERRA PACIFIC POWER COMPANY 88-0044418 P.O. Box 10100 (6100 Neil Road) Reno, Nevada 89520-0400 (89511) (775) 834-4011 None - -------------------------------------------------------------------------------- (Former name, former address and former fiscal year, if changed since last report) Item 5. Other Events - -------------------- On April 4, 2002, Nevada Power Company and Sierra Pacific Power Company sent letters to the counterparties to their fuel and purchased power contracts regarding the recent decision of the Public Utilities Commission of Nevada (PUCN) to deny nearly half of Nevada Power Company's deferred energy expenses from 2001. The letter provided an update to the counterparties as to the consequences of the disallowance by the PUCN and certain responsive actions taken by the Companies. The form of the letter, dated April 4, 2002, is attached as Exhibit 99.1 hereto. Item 7. Financial Statements and Exhibits - ----------------------------------------- (a) Financial Statements of Businesses Acquired ------------------------------------------- Not required (b) Pro forma financial information ------------------------------- Not required (c) Exhibits -------- Nevada Power Company and Sierra Pacific Power Company 99.1 - Letter dated April 4, 2002 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: April 4, 2002 By: /s/Dennis D. Schiffel ---------------------- Dennis D. Schiffel Senior Vice President and Chief Financial Officer Nevada Power Company -------------------- (Registrant) Date: April 4, 2002 By: /s/Dennis D. Schiffel ---------------------- Dennis D. Schiffel Senior Vice President and Chief Financial Officer Sierra Pacific Power Company ---------------------------- (Registrant) Date: April 4, 2002 By: /s/Dennis D. Schiffel ---------------------- Dennis D. Schiffel Senior Vice President and Chief Financial Officer Exhibit Index ------------- Nevada Power Company and Sierra Pacific Power Company Exhibit 99.1 - Letter dated April 4, 2002