- -------------------------------------------------------------------------------- FORM 8-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: July 8, 1999 Commission file number 1-12579 OGE ENERGY CORP. (Exact name of registrant as specified in its charter) Oklahoma 73-1481638 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 321 North Harvey P. O. Box 321 Oklahoma City, Oklahoma 73101-0321 (Address of principal executive offices) (Zip Code) 405-553-3000 (Registrant's telephone number, including area code) - --------------------------------------------------------------------------------

Item 5. Other Events OKLAHOMA GAS & ELECTRIC COMPANY FILES GENERATION EFFICIENCY PERFORMANCE RIDER (GEP RIDER) ----------------------------------------------------------------------- OGE Energy Corp. announced, June 29, 1999, that its subsidiary, Oklahoma Gas & Electric Company ("OG&E"), filed an updated GEP Rider with the Oklahoma Corporation Commission ("OCC"). The GEP Rider is designed so that when OG&E's average annual cost of fuel per kwh is less than 96.261 percent of the average non-nuclear fuel cost per kwh of certain other investor-owned utilities in the region, OG&E is allowed to collect, through the GEP Rider, one-third of the amount by which OG&E's average annual cost of fuel comes in below 96.261 percent of the average of the other specified utilities. If OG&E's fuel cost exceeds 103.739 percent of the stated average, OG&E will not be allowed to recover one-third of the fuel costs above that average from Oklahoma customers. The fuel cost information used to calculate the GEP Rider is based on fuel cost data submitted by each of the utilities in their Form No. 1 Annual Report filed with the Federal Energy Regulatory Commission. The GEP Rider is revised effective July 1 of each year to reflect any changes in the relative annual cost of fuel reported for the preceding calendar year. Although revenue associated with the new GEP Rider is expected to decrease by approximately $10 million (or approximately $0.08 per share) from 1998, the new GEP Rider is estimated to positively impact revenue by $20 million or approximately $0.15 per share in 1999. Some of the matters discussed in this Form 8-K may contain forward-looking statements of OGE Energy that are subject to certain risks, uncertainties, and assumptions. Actual results may vary materially. Factors that could cause actual results to differ materially include, but are not limited to: general economic conditions, including their impact on capital expenditures; business conditions in the energy industry; competitive factors; unusual weather; regulatory decisions and other risk factors listed in OGE Energy's Form 10-K for the year ended December 31, 1998 and other factors described from time to time in OGE Energy's reports to the Securities and Exchange Commission. Item 7. (c) Exhibits EXHIBIT NUMBER DESCRIPTION -------------- ----------- 99.01 Press release dated June 29, 1999 announcing Oklahoma Gas & Electric Company files Generation Efficiency Performance Rider with the Oklahoma Corporation Commission.

SIGNATURES 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. OGE ENERGY CORP. (Registrant) By /s/ Donald R. Rowlett ----------------------------------------- Donald R. Rowlett Controller Corporate Accounting (On behalf of the registrant and in his capacity as Controller Corporate Accounting) July 8, 1999

EXHIBIT INDEX EXHIBIT INDEX DESCRIPTION - ------------- ----------- 99.01 OGE ENERGY CORP.'S OKLAHOMA GAS & ELECTRIC COMPANY FILES GENERATION EFFICIENCY PERFORMANCE RIDER (GER)




                                                                   EXHIBIT 99.01


OGE ENERGY CORP.'S OKLAHOMA GAS & ELECTRIC  COMPANY FILES GENERATION  EFFICIENCY
PERFORMANCE RIDER (GER)

Oklahoma Gas & Electric  Company,  a wholly owned subsidiary of OGE Energy Corp.

(NYSE: OGE), today filed the Generation Efficiency  Performance Rider (GER) with

the Oklahoma  Corporation  Commission.  The rider, which allows OG&E to retain a

part of the fuel savings it achieves through efficiencies, will take effect July

1. Based on normalized  sales,  the GER is expected to decrease by approximately

$10 million from 1998.


Highlights:

o    Revenue  associated with the GER decreased from  approximately  $30 million

     in 1998 to approximately $20 million in 1999.


o    OG&E's  fuel cost  relative  to the  Southwest Power Pool increased from 73

     percent of average to 85 percent of average.


o    The GER reduction should result in an 8 cent decrease in earnings per share

     for 1999.