| Florida Power & Light Co | 128 | 39.9 GW | Natural gas |
| Tennessee Valley Authority | 53 | 36.3 GW | Natural gas |
| Constellation Nuclear | 13 | 23.8 GW | Nuclear |
| Duke Energy Carolinas, LLC | 45 | 23.8 GW | Natural gas |
| Georgia Power Co | 43 | 20.9 GW | Nuclear |
| Virginia Electric & Power Co | 36 | 20.2 GW | Natural gas |
| Alabama Power Co | 27 | 16.2 GW | Natural gas |
| U S Bureau of Reclamation | 57 | 14.7 GW | Hydroelectric |
| Duke Energy Progress (NC) | 25 | 14.3 GW | Natural gas |
| PacifiCorp | 59 | 13.6 GW | Coal |
| Duke Energy Florida, LLC | 43 | 13.4 GW | Natural gas |
| Southern Power Co | 52 | 13.3 GW | Natural gas |
| MidAmerican Energy Co | 57 | 13.2 GW | Wind |
| USACE Northwestern Division | 21 | 13.1 GW | Hydroelectric |
| RWE Clean Energy | 149 | 13.0 GW | Wind |
| Entergy Louisiana LLC | 15 | 12.8 GW | Natural gas |
| DTE Electric Company | 39 | 12.2 GW | Coal |
| Invenergy Services LLC | 64 | 11.9 GW | Wind |
| Luminant Generation Company LLC | 13 | 11.3 GW | Coal |
| Arizona Public Service Co | 21 | 10.9 GW | Natural gas |
| Union Electric Co (MO) | 28 | 10.5 GW | Coal |
| Northern States Power Co - Minnesota | 51 | 10.5 GW | Natural gas |
| Entergy Arkansas LLC | 11 | 9,635 MW | Natural gas |
| City of San Antonio (TX) | 16 | 9,580 MW | Natural gas |
| Avangrid Power LLC | 72 | 8,869 MW | Wind |
| Consumers Energy Co (MI) | 28 | 8,705 MW | Natural gas |
| Oklahoma Gas & Electric Co | 18 | 8,610 MW | Natural gas |
| Salt River Project | 19 | 8,518 MW | Natural gas |
| Public Service Co of Colorado | 22 | 7,939 MW | Natural gas |
| Pacific Gas & Electric Co. | 71 | 7,799 MW | Hydroelectric |
| Constellation Power, Inc | 17 | 7,734 MW | Natural gas |
| Tampa Electric Co | 32 | 7,156 MW | Natural gas |
| Duke Energy Indiana, LLC | 14 | 7,121 MW | Coal |
| Los Angeles Department of Water & Power | 28 | 7,110 MW | Natural gas |
| Appalachian Power Co | 16 | 6,863 MW | Coal |
| Southwestern Electric Power Co | 12 | 6,640 MW | Natural gas |
| Nevada Power Co | 12 | 6,478 MW | Natural gas |
| Oglethorpe Power Corporation | 11 | 6,472 MW | Natural gas |
| Basin Electric Power Coop | 16 | 6,343 MW | Coal |
| Wisconsin Electric Power Co | 52 | 6,291 MW | Natural gas |
| Dominion Energy South Carolina, Inc | 15 | 6,213 MW | Natural gas |
| Public Service Co of Oklahoma | 13 | 6,031 MW | Natural gas |
| New York Power Authority | 20 | 5,896 MW | Hydroelectric |
| Wisconsin Power & Light Co | 31 | 5,774 MW | Natural gas |
| Southwestern Public Service Co | 10 | 5,424 MW | Natural gas |
| South Carolina Public Service Authority | 12 | 5,282 MW | Coal |
| Deriva Energy | 81 | 5,252 MW | Wind |
| Indiana Michigan Power Co | 13 | 4,943 MW | Coal |
| Engie North America | 41 | 4,925 MW | Wind |
| Evergy Kansas Central, Inc | 15 | 4,745 MW | Coal |
| Interstate Power and Light Co | 29 | 4,537 MW | Natural gas |
| AES Distributed Energy | 218 | 4,418 MW | Solar |
| EDF Renewable Asset Holdings, Inc. | 30 | 4,251 MW | Wind |
| Lower Colorado River Authority | 12 | 4,208 MW | Natural gas |
| AES Clean Energy | 47 | 4,154 MW | Solar |
| Portland General Electric Co | 21 | 4,080 MW | Natural gas |
| National Grid Generation LLC | 12 | 3,945 MW | Natural gas |
| Pattern Operators LP | 18 | 3,595 MW | Wind |
| Leeward Asset Management, LLC | 29 | 3,536 MW | Wind |
| East Kentucky Power Coop, Inc | 10 | 3,495 MW | Coal |
| Puget Sound Energy Inc | 18 | 3,218 MW | Natural gas |
| Nebraska Public Power District | 12 | 3,008 MW | Coal |
| Tucson Electric Power Co | 10 | 2,987 MW | Coal |
| Idaho Power Co | 30 | 2,895 MW | Hydroelectric |
| Wisconsin Public Service Corp | 25 | 2,862 MW | Natural gas |
| Southern California Edison Co | 41 | 2,827 MW | Natural gas |
| MN8 Energy LLC | 184 | 2,817 MW | Solar |
| Geronimo Power | 56 | 2,689 MW | Solar |
| Lightsource Renewable Energy Asset Management, LLC | 30 | 2,574 MW | Solar |
| Onward Energy | 41 | 2,419 MW | Solar |
| Arkansas Electric Coop Corp | 10 | 2,177 MW | Natural gas |
| Sacramento Municipal Util Dist | 14 | 2,172 MW | Natural gas |