| Utility | State | Customers | Residential rate |
|---|
| Sac-Osage Electric Coop Inc | MO | 12,100 | — |
| Sacramento Municipal Util Dist | CA | 675,491 | 18.93¢ |
| Salem City Corporation - (UT) | UT | 4,051 | — |
| Salem Electric - (OR) | OR | 20,981 | 10.91¢ |
| Salmon River Electric Coop Inc | ID | 3,038 | 9.87¢ |
| Salt River Electric Coop Corp | KY | 57,946 | 10.94¢ |
| Salt River Project | AZ | 1,188,189 | 13.98¢ |
| Sam Houston Electric Coop Inc | TX | 95,874 | 14.18¢ |
| San Bernard Electric Coop, Inc | TX | 33,684 | 14.11¢ |
| San Diego Community Power | CA | 939,547 | 15.76¢ |
| San Diego Gas & Electric Co | CA | 317,732 | 45.77¢ |
| San Isabel Electric Assn, Inc | CO | 26,166 | 18.86¢ |
| San Jacinto Power | CA | 15,189 | 16.97¢ |
| San Jose Clean Energy | CA | 354,400 | 13.96¢ |
| San Luis Valley R E C, Inc | CO | 13,020 | 19.40¢ |
| San Miguel Power Assn, Inc | CO | 15,087 | 16.84¢ |
| San Patricio Electric Coop Inc | TX | 12,600 | 14.16¢ |
| Sand Mountain Electric Coop | AL | 33,815 | 13.55¢ |
| Sangre De Cristo Elec Assn Inc | CO | 14,818 | — |
| Santa Barbara Clean Energy | CA | 38,680 | 15.35¢ |
| Santanna Energy Services | OH | 21,189 | 9.72¢ |
| Santee Electric Coop, Inc | SC | 45,110 | 16.39¢ |
| Satilla Rural Elec Member Corporation | GA | 59,539 | 14.65¢ |
| Sawnee Electric Membership Corporation | GA | 203,530 | 12.82¢ |
| Scale Sustainable I, LLC | CO | 12 | — |
| Scenic Rivers Energy Coop | WI | 14,689 | 15.49¢ |
| SE-MA-NO Electric Coop | MO | 6,663 | — |
| Seaside Heights Municipal Utility (NJ) | NJ | 3,222 | — |
| Sedgwick County El Coop Assn Inc | KS | 8,530 | — |
| Selfserve Energy Corp. | TX | 1 | — |
| SEMO Electric Cooperative | MO | 16,323 | 13.51¢ |
| Sequachee Valley Electric Coop | TN | 39,465 | 13.77¢ |
| Sevier County Electric System | TN | 64,328 | 12.06¢ |
| Seville Board of Public Affairs | OH | 2,264 | — |
| SFE Energy Illinois, Inc. | IL | 1,614 | 11.29¢ |
| SFE Energy Maryland, Inc. | MD | 4,330 | 13.35¢ |
| SFE Energy Massachusetts, Inc. | MA | 9,284 | 16.69¢ |
| SFE Energy NJ, Inc. | NJ | 2,984 | 15.65¢ |
| SFE Energy Ohio, Inc. | OH | 13,036 | 7.83¢ |
| SFE Energy Pennsylvania, Inc. | PA | 28,484 | 11.82¢ |
| SFE Energy Texas, Inc. | TX | 598 | 14.51¢ |
| Shakopee Public Utilities Comm | MN | 21,002 | 15.91¢ |
| Shawano Municipal Utilities | WI | 6,183 | 14.41¢ |
| Sheffield Utilities | AL | 19,570 | 12.98¢ |
| Shelby Electric Coop, Inc - (IL) | IL | 10,065 | 21.54¢ |
| Shelby Energy Coop, Inc - (KY) | KY | 17,906 | 13.95¢ |
| Shell Energy North America (US), L.P. | CA | 173 | — |
| Shelter Cove Resort Improvement Dist No. 1 | CA | 648 | — |
| Shenandoah Valley Elec Coop | VA | 102,230 | 14.49¢ |
| Sheridan Electric Coop, Inc | MT | 3,765 | — |
| Shipley Choice, LLC | OH | 18,815 | 10.45¢ |
| Sierra Electric Coop, Inc | NM | 4,469 | — |
| Sierra Pacific Power Co | NV | 386,254 | 13.65¢ |
| Silicon Valley Clean Energy Authority | CA | 280,108 | 13.30¢ |
| Silver State Energy Association | NV | 7 | — |
| Singing River Elec Cooperative | MS | 81,787 | 13.54¢ |
| Sioux Valley SW Elec Coop | SD | 30,059 | 13.87¢ |
| Slash Pine Elec Member Corp | GA | 9,560 | — |
| Sleepy Eye Public Utility Comm | MN | 2,039 | — |
| Slinger Utilities | WI | 3,125 | 12.36¢ |
| Slope Electric Coop Inc | ND | 4,142 | 14.27¢ |
| Smart Prepaid Electric | TX | 85 | 17.51¢ |
| SmartEnergy Holdings, LLC | PA | 199,336 | 15.49¢ |
| SmartestEnergy US LLC | NY | 4,860 | — |
| Snapping Shoals El Member Corp | GA | 110,819 | 12.99¢ |
| Socorro Electric Coop, Inc | NM | 13,194 | — |
| SolAmerica Energy | IL | 3 | — |
| Somerset Rural Elec Coop, Inc | PA | 13,928 | 14.37¢ |
| Sonoma Clean Power Authority | CA | 234,406 | 12.36¢ |
| South Alabama Elec Coop, Inc | AL | 17,985 | 15.82¢ |
| South Bay Energy Corp. | NY | 6,167 | 22.61¢ |
| South Carolina Public Service Authority | SC | 219,897 | 12.91¢ |
| South Central Ark El Coop, Inc | AR | 10,714 | 16.05¢ |
| South Central Electric Assn | MN | 5,954 | 15.51¢ |
| South Central Indiana REMC | IN | 35,833 | 17.54¢ |
| South Central Power Company | OH | 128,929 | 15.39¢ |
| South Central Public Pwr Dist | NE | 8,626 | 9.48¢ |
| South Kentucky Rural E C C | KY | 72,111 | 13.55¢ |
| South Louisiana Elec Coop Assn | LA | 21,297 | 12.25¢ |
| South Plains Electric Coop Inc | TX | 77,786 | 11.02¢ |
| South River Elec Member Corp | NC | 49,067 | 14.56¢ |
| South Side Electric, Inc | ID | 868 | — |
| South Vienna Corporation | OH | 245 | — |
| Southeast Colorado Power Assn | CO | 10,970 | 17.92¢ |
| Southeast Electric Coop, Inc | MT | 2,196 | — |
| Southeastern Electric Coop Inc - (OK) | OK | 17,550 | 12.29¢ |
| Southeastern Electric Coop Inc - (SD) | SD | 24,428 | 12.98¢ |
| Southeastern IL Elec Coop, Inc | IL | 25,186 | 14.80¢ |
| Southeastern Indiana R E M C | IN | 28,652 | 15.63¢ |
| Southern California Edison Co | CA | 3,735,576 | 31.48¢ |
| Southern Federal Power, LLC | TX | 24,764 | 8.03¢ |
| Southern Illinois Elec Coop | IL | 11,216 | — |
| Southern Indiana Gas & Elec Co | IN | 154,465 | 19.78¢ |
| Southern Indiana R E C, Inc | IN | 9,592 | 15.47¢ |
| Southern Iowa Elec Coop, Inc | IA | 4,818 | — |
| Southern Maryland Elec Coop Inc | MD | 179,005 | 16.43¢ |
| Southern Pine Elec Coop, Inc | AL | 22,921 | 14.55¢ |
| Southern Pine Electric Cooperative | MS | 71,243 | 14.47¢ |
| Southern Pioneer Electric Company | KS | 17,117 | 16.43¢ |
| Southern Public Power District | NE | 28,407 | 9.10¢ |
| Southern Rivers Energy | GA | 21,961 | 16.35¢ |
| Southside Electric Coop, Inc | VA | 59,799 | 15.48¢ |
| Southwest Arkansas E C C | AR | 29,382 | 13.89¢ |
| Southwest Electric Coop, Inc | MO | 45,082 | 12.33¢ |
| Southwest Iowa Rural Elec Coop | IA | 6,094 | — |
| Southwest Louisiana E M C | LA | 118,774 | 11.57¢ |
| Southwest Mississippi E P A | MS | 25,366 | 15.34¢ |
| Southwest Public Power Dist | NE | 6,331 | 10.54¢ |
| Southwest Rural Elec Assn Inc | OK | 4,430 | — |
| Southwest Tennessee E M C | TN | 52,538 | 13.72¢ |
| Southwest Texas Elec Coop, Inc | TX | 9,956 | 14.65¢ |
| Southwestern Electric Coop Inc - (IL) | IL | 24,885 | 15.37¢ |
| Southwestern Electric Coop Inc - (NM) | NM | 2,312 | 25.26¢ |
| Southwestern Electric Power Co | LA | 556,313 | 13.10¢ |
| Southwestern Public Service Co | TX | 411,159 | 13.59¢ |
| Spanish Fork City Corporation | UT | 19,613 | 10.39¢ |
| Spark Energy, LP | TX | 36,016 | 17.80¢ |
| Spartacus Energy Services LLC | PA | 1,244 | 23.20¢ |
| Spartan Renewable Energy, Inc | MI | 3 | — |
| Spoon River Electric Coop, Inc | IL | 4,890 | — |
| Spring City Corporation | UT | 662 | — |
| Spring Energy RRH LLC | PA | 7,819 | 15.83¢ |
| Spring Valley Pub Utils Comm | MN | 1,359 | — |
| Springer Electric Coop, Inc | NM | 3,054 | 21.96¢ |
| Springfield Public Utils Comm - (MN) | MN | 1,245 | — |
| Spruce Finance | CA | 58,914 | 15.94¢ |
| St Croix Electric Coop | WI | 12,222 | — |
| Stanton County Public Pwr Dist | NE | 2,761 | 10.87¢ |
| StateWise Energy Maryland LLC | MD | 789 | 13.77¢ |
| StateWise Energy Ohio LLC | OH | 2,028 | 11.05¢ |
| StateWise Energy Pennsylvania LLC | PA | 774 | 12.33¢ |
| Stearns Cooperative Elec Assn | MN | 28,746 | 14.07¢ |
| Steele-Waseca Cooperative Electric | MN | 12,126 | 16.46¢ |
| Steuben County Rural E M C | IN | 9,780 | 14.05¢ |
| Steuben Rural Elec Coop, Inc | NY | 6,488 | — |
| Stillwater Utilities Authority | OK | 22,134 | 13.79¢ |
| Strawberry Electric Serv Dist | UT | 4,142 | 15.26¢ |
| Stream Energy Columbia, LLC | DC | 195 | 18.34¢ |
| Stream Energy Delaware, LLC | DE | 151 | 16.80¢ |
| Stream Energy Illinois, LLC | IL | 2,543 | 12.89¢ |
| Stream Energy Maryland, LLC | MD | 1,248 | 12.63¢ |
| Stream Energy New Jersey, LLC | NJ | 5,027 | 19.20¢ |
| Stream Energy New York, LLC | NY | 525 | 15.78¢ |
| Stream Energy Pennsylvania, LLC | PA | 18,303 | 13.93¢ |
| Stream Ohio Gas & Electric, LLC | OH | 716 | 12.84¢ |
| Stream SPE, LTD | TX | 155,645 | 17.67¢ |
| Sullivan County R E C, Inc - (PA) | PA | 6,135 | — |
| Sulphur Springs Valley E C Inc | AZ | 54,786 | 14.61¢ |
| Summer Energy LLC | TX | 28,489 | 21.18¢ |
| Summer Energy Midwest, LLC | OH | 1,065 | 12.54¢ |
| Summer Energy Northeast, LLC | MA | 484 | 24.73¢ |
| Sumner-Cowley Elec Coop, Inc | KS | 4,586 | — |
| Sumter Electric Coop, Inc | FL | 264,730 | 14.98¢ |
| Sumter Electric Member Corp | GA | 21,473 | 14.62¢ |
| Sun Prairie Utilities | WI | 18,906 | 12.11¢ |
| Sun River Electric Coop, Inc | MT | 6,300 | — |
| SunPower Capital, LLC | CA | 108,675 | 23.57¢ |
| Sunrun Inc. | CA | 796,359 | 26.53¢ |
| SunSea Energy, LLC | OH | 5,811 | 27.27¢ |
| Superior Water and Light Co | WI | 15,626 | 15.78¢ |
| Surprise Valley Electrification | CA | 6,706 | 13.38¢ |
| Surry-Yadkin Elec Member Corp | NC | 28,597 | 17.53¢ |
| Sussex Rural Electric Coop Inc | NJ | 12,201 | — |
| Suwannee Valley Elec Coop Inc | FL | 29,639 | 17.58¢ |
| Swisher Electric Coop, Inc | TX | 7,912 | — |
| Sylacauga Utilities Board | AL | 6,038 | — |