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) May 12, 2003 ------------ Registrant, State of Incorporation, Address of Commission File Principal Executive Offices and Telephone I.R.S. employer Number Number Identification Number 1-08788 SIERRA PACIFIC RESOURCES 88-0198358 P.O. Box 10100 (6100 Neil Road) Reno, Nevada 89520-0400 (89511) (775) 834-4011 2-28348 NEVADA POWER COMPANY 88-0420104 6226 West Sahara Avenue Las Vegas, Nevada 89146 (702) 367-5000 0-00508 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 Deferred Energy Rate Case Decision - ---------------------------------- On May 13, 2003, Sierra Pacific Resources, the parent corporation of Nevada Power Company (the "Company"), issued a press release announcing that the Public Utilities Commission of Nevada ("PUCN") finalized an order allowing the Company to recover over three years approximately $148 million of $195 million in deferred energy costs incurred by the Company from October 1, 2001, through September 30, 2002. The PUCN's order also provides for the base tariff energy rate (going forward rate) to be set at approximately $42 per MWh, which will result in an overall 6.3 percent decrease for a typical residential customer of the Company. The rate reduction will become effective May 19, 2003. A copy of the press release, dated May 13, 2003, is attached as Exhibit 99.1 hereto. Legal Proceedings - ----------------- On May 12, 2003, the Company filed a Motion to Reconsider, Alter or Amend (the "Motion") the Order of the First Judicial District Court of Nevada (the "Court") that was issued on April 28, 2003 (the "Order"), denying the Company's appeal of the March 29, 2002 decision of the PUCN that disallowed the recovery of $437 million of deferred energy costs incurred by the Company on behalf of its customers in 2001. The Motion requests that the Court reconsider its Order with respect to the "Merrill Lynch" disallowances that comprised approximately $180 million of the $437 million of the 2001 disallowed deferred energy costs. The Company is unable to predict how or when the Court will rule on the Motion. ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS (a) Financial Statements of Businesses Acquired. ------------------------------------------- Not required (b) Pro forma financial information. ------------------------------- Not required (c) Exhibit. ------- 99.1 Sierra Pacific Resources- Press Release issued May 13, 2003 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. SIERRA PACIFIC RESOURCES ------------------------ (Registrant) Date: May 15, 2003 By: /s/ John E. Brown ------------ -------------------------------- John E. Brown Vice President, Controller NEVADA POWER COMPANY -------------------- (Registrant) Date: May 15, 2003 By: /s/ John E. Brown ------------ -------------------------------- John E. Brown Vice President, Controller SIERRA PACIFIC POWER COMPANY ---------------------------- (Registrant) Date: May 15, 2003 By: /s/ John E. Brown ------------ -------------------------------- John E. Brown Vice President, Controller EXHIBIT INDEX Exhibit 99.1 Sierra Pacific Resources- Press Release issued May 13, 2003.