Symbol: OGE Yield: 4.29% 32.37 -0.06 May. 14, 2008, 4:04 p.m. EST Stock data is delayed 20 minutes 1st Quarter 2008 Conference Call Webcast Printable Webcast Slides OGE Energy Corp. Announces 1st Quarter Results OGE Energy Corp. 1st Quarter 2008 Earnings Conference Call Enogex Proposes to Develop New Transportation Capacity Chesapeake, Enogex announce western Oklahoma gas-gathering agreement Enogex Closes New $250 Million Credit Facility
	Oklahoma and Arkansas Rate Schedules OG&E strives to keep this information up-to-date and accurate. However, the only tariffs that are actually in force are on file with the Oklahoma Corporation Commission and the Arkansas Public Service Commission. Note: These files are Adobe Acrobat *.PDF files and require the Acrobat reader. Oklahoma Rate Tariffs Schedules Class of Service Sheet No. Size (in KB)   Complete Oklahoma Rate Tariff    5,375           Table of Contents 1.0 - 1.3 1346 R-1 Residential 3.0 - 3.1 88 R-TOU Residential Time-of-Use 5.0 - 5.1 91 R-GFB Residential Guaranteed Flat Bill 6.0 - 6.1 96 GS-GFB General Service Guranteed Flat Bill 9.0 - 9.1 98 GS-1 General Service 10.0 - 10.3 135 GS-TOU General Service Time-of-Use 11.0 - 11.4 150 OGP-1 Oil and Gas Producers 12.0 - 12.2 106 OGP-TOU Oil and Gas Producers Time-of-Use 13.0 - 13.3 123 OGP-LEV Oil and Gas Producers Levelized 14.0 - 14.2 97 PL-LEV Power and Light - Levelized Demand 18.0 - 18.5 143 PL-OGP Power and Light - Oil and Gas Producers 19.0 - 19.5 147 PL-1 Power and Light 20.0 - 20.5 153 PL-TOU Power and Light Time-of-Use 21.0 - 21.6 163 LPL-TOU Large Power and Light Time-of-Use 23.0 - 23.6 152 LPL-LEV Large Power and Light  - Levelized Demand 24.0 - 24.4 123 PS-ND-1 Public Schools - Non Demand 30.0 - 30.3 276 PS-ND-TOU Public Schools - Non Demand - Time-of-Use 31.0 - 31.3 276 PS-ND-C-TOU Public Schools - Non Demand - Compressed Time-of-Use 32.0 - 32.3 276 PS-D-1 Public Schools - Demand 33.0 - 33.4 276 PS-D-TOU Public Schools - Demand - Time-of-Use 34.0 - 34.4 276 PS-D-C-TOU Public Schools - Demand - Compressed Time-of-Use 35.0 - 35.4 276 LM-1 Municipal Roadway and Area Lighting 38.0 - 38.9 276 OSL-1 Outdoor Security Lighting 39.0 - 39.6 138 PM-1 Municipal Water Pumping 40.0 - 40.1 93 DAP Day-Ahead Pricing 45.0 - 45.8 129 CCT Custom Contract Tariff 48.0 - 48.3 68 LIHEAP-1 Rider for Low Income Home Energy Assistance Program 51.0 68 CWEP Centennial Wind Energy Project Rider 52.0 - 52.1 1173 GPWR Green Power Wind Rider 56.0 - 56.4 134 SR Security Rider 58.0 - 58.2 24 Security Rider Factors PACE-1 Performance Award for Curtailed Energy Rider 59.0 - 59.2 89 CR-1 Curtailment Rider 60.0 - 60.3 113 IR-1 Interruptible Rider 61.0 - 61.2 105 FCA Rider for Fuel Cost Adjustment 62.0 - 62.3 112 Fuel Cost Adjustment Factors OSSE Rider for Off System Sales of Electricity 64.0 72 CCR Rider for Cogen Credit 65.0 - 65.5 Cogen Credit Rider 2008 3872 Cogen Credit Rider 2007 2724 APUAF Rider for Annual Public Utility Assessment Fee 66.0 913 CAAR Rider for Chain Account Aggregation 67.0 - 67.1 87 MBTC Military Base Tariff Credit 68.0 - 68.1 142 QF-1 Purchase Rate for Producers of 100kW or Less 70.0 - 70.3 142 QF-2 Net Energy Billing Option 71.0 - 71.1 81 BUS-1 Back-Up Service 72.0 - 72.8 154 SS-1 Supplementary Service 73.0 71 MS-1 Maintenance Service 74.0 - 74.6 128 IS-1 Rider for Interruptible Service 75.0 - 75.3 116   Terms and Conditions of Purchase 80.0 - 80.3 94   Standard Electricity Purchase Agreement 81.0 - 81.5 127   Terms and Conditions of Service for Standby Services 82.0 - 82.2 94         Arkansas Rate Tariffs Schedules Class of Service Sheet No. Size (in KB) Effective Feb. 2, 2007   Complete Arkansas Tariffs and Terms & Conditions    39,164           Table of Contents 1.0 - 1.9 1237 R-1 Residential 3.0 - 3.1 429 GS-1 General Service 10.0 - 10.1 552 PL-1 Power and Light 20.0 - 20.4 1235 PL-TOU Power and Light Time-of-Use 21.0 - 21.6 1686 LM-1 Municipal Roadway and Area Lighting 30.0 - 30.12 2890 OSL-1 Outdoor Security Lighting 31.0 - 31.9 2248 AFL Athletic Field Lighting 32.0 - 32.1 440 PM-1 Municipal Water Pumping 40.0 - 40.1 538 COG-1 Cogeneration Rate 50.0 - 50.1 522 Terms and Conditions of Purchase 51.1 - 51.26 6171 Power Purchase Agreement 52.0 - 52.4 1142 NET-1 Net Metering Rate 60.0 - 60.1 1644 NETIA -1 Standard Interconnection Agreement for Net Metering Facilities 61.0 - 61.9 6659 ECR Energy Cost Recovery Rider 70.0 - 70.4 1190 Arkansas Energy Cost Recovery Factors MTA Rider for Uniform Municipal Tax Adjustment 71.0 316 EECR Energy Efficiency Cost Recovery 72.0 - 72.3 3043