| Prairie State Generating Company LLC | Prairie State Generating | workplace safety or health violation | 2023 | MSHA | $85,580 |
| NRG Power Marketing, LLC | NRG Energy | energy market violation | 2021 | FERC | $85,000 |
| AEP Texas Central Company | American Electric Power | utility service violation | 2018 | TX-PUC | $85,000 |
| Entergy Texas, Inc. | Entergy | utility service violation | 2009 | TX-PUC | $85,000 |
| Entergy | Entergy | consumer protection violation | 2005 | VT-PUC | $85,000 |
| AMERICAN ELECTRIC POWER COMPANY AND APPALACHIAN PO | American Electric Power | workplace safety or health violation | 2005 | OSHA | $85,000 |
| NSTAR | EverSource Energy | environmental violation | 2004 | EPA | $84,215 |
| AEP - Texas | American Electric Power | utility service violation | 2018 | TX-PUC | $84,000 |
| CenterPoint Energy Houston Electric, LLC | CenterPoint Energy | utility service violation | 2010 | TX-PUC | $84,000 |
| Peoples Gas | WEC Energy Group | utility safety violation | 2015 | IL-ICC | $83,200 |
| Connecticut Natural Gas Corporation | Iberdrola | environmental violation | 2000 | CT-ENV | $82,750 |
| Consolidated Edison Company of New York, Inc. | Consolidated Edison | environmental violation | 2017 | EPA | $82,275 |
| CENTERPOINT ENERGY | CenterPoint Energy | environmental violation | 2024 | EPA | $81,500 |
| Columbia Gas of Virginia, Inc | NiSource | utility safety violation | 2007 | VA-SCC | $80,900 |
| Indiana Michigan Power Company, d.b.a. American Po | American Electric Power | environmental violation | 2005 | EPA | $80,769 |
| San Diego Gas & Electric Company | Sempra Energy | investor protection violation | 2010 | CFTC | $80,000 |
| Progress Energy Florida, Inc., | Duke Energy | energy market violation | 2013 | FERC | $80,000 |
| Wisconsin Public Service Corporation | WEC Energy Group | air pollution violation | 2013 | WI-AG | $80,000 |
| AMERICAN WATER SERVICES, INC. | American Water Works | environmental violation | 2003 | FL-DEP | $80,000 |
| Xcel Energy - Key City/Wilmarth | Xcel Energy | air pollution violation | 2004 | MN-ENV | $80,000 |
| Yankee Gas Services | EverSource Energy | utility safety violation | 2019 | CT-PURA | $80,000 |
| Peoples Natural Gas Co. | Essential Utilities Inc. | utility safety violation | 2011 | PA-PUC | $80,000 |
| UGI Utilities Inc. | UGI Corp. | utility safety violation | 2010 | PA-PUC | $80,000 |
| TXU Energy Retail Company, LLC | Vistra Energy | consumer protection violation | 2011 | TX-PUC | $80,000 |
| AEP Texas North Company | American Electric Power | utility service violation | 2010 | TX-PUC | $80,000 |
| Dynegy Midwest Generation, LLC | Vistra Energy | environmental violation | 2023 | IL-ENV | $80,000 |
| FirstEnergy Corp. | FirstEnergy | wage and hour violation | 2013 | WHD | $79,164 |
| SAN DIEGO GAS & ELECTRIC | Sempra Energy | workplace safety or health violation | 2008 | OSHA | $79,030 |
| Southern California Gas Co. | Sempra Energy | consumer protection violation | 2022 | CA-PUC | $78,652 |
| DAYTON POWER & LIGHT | AES Corp. | workplace safety or health violation | 2023 | OSHA | $78,125 |
| Liberty Utilities (EnergyNorth Natural Gas) Corp. d/b/a Liberty | Algonquin Power & Utilities | utility safety violation | 2019 | NH-PUC | $78,000 |
| Pacific Gas and Electric Company | PG&E Corp. | wage and hour violation | 2008 | WHD | $77,748 |
| Liberty Utilities (EnergyNorth Natural Gas) Corp. d/b/a Liberty | Algonquin Power & Utilities | utility safety violation | 2020 | NH-PUC | $77,500 |
| ENEL | Enel | environmental violation | 2018 | EPA | $76,997 |
| Toledo Edison Co. | FirstEnergy | environmental violation | 2016 | OH-ENV | $76,318 |
| AEP Texas North Company | American Electric Power | utility service violation | 2016 | TX-PUC | $76,000 |
| GenOn Chalk Point and Dickerson Generating Stations | NRG Energy | water pollution violation | 2020 | MD-ENV | $75,500 |
| TENASKA GATEWAY PARTNERS, LTD. | Tenaska | environmental violation | 2022 | TX-ENV | $75,401 |
| NIPSCO | NiSource | labor relations violation | 2008 | NLRB | $75,000 |
| Southern California Edison | Edison International | air pollution violation | 2014 | CA-ARB | $75,000 |
| EAST KENTUCKY POWER COOPERATIVE | East Kentucky Power Cooperative | air pollution violation | 2011 | KY-ENV | $75,000 |
| AEP KENTUCKY POW ER / BIG SANDY PLANT | American Electric Power | air pollution violation | 2010 | KY-ENV | $75,000 |
| GenOn Chalk Point | NRG Energy | air pollution violation | 2020 | MD-ENV | $75,000 |
| Amerigas Propane, Inc. | UGI Corp. | utility safety violation | 2019 | CT-PURA | $75,000 |
| Yankee Gas Services | EverSource Energy | utility safety violation | 2019 | CT-PURA | $75,000 |
| The Southern Connecticut Gas Company | Iberdrola | utility safety violation | 2018 | CT-PURA | $75,000 |
| Yankee Gas Services | EverSource Energy | utility safety violation | 2017 | CT-PURA | $75,000 |
| Yankee Gas Services | EverSource Energy | utility safety violation | 2004 | CT-PURA | $75,000 |
| Northern Indiana Public Service Co. | NiSource | utility safety violation | 2020 | IN-URC | $75,000 |
| Indiana Gas Company, Inc. - Vectren | CenterPoint Energy | utility safety violation | 2013 | IN-URC | $75,000 |
| Northern Indiana Public Service Co - Gas | NiSource | utility safety violation | 2013 | IN-URC | $75,000 |
| Boston Gas Company d/b/a National Grid | National Grid | utility safety violation | 2020 | MA-DPU | $75,000 |
| Boston Gas Company d/b/a National Grid | National Grid | utility safety violation | 2020 | MA-DPU | $75,000 |
| Boston Gas Company d/b/a National Grid | National Grid | utility safety violation | 2020 | MA-DPU | $75,000 |
| Boston Gas Company and Colonial Gas Company d/b/a National Grid | National Grid | utility safety violation | 2020 | MA-DPU | $75,000 |
| Bay State Gas Company d/b/a Columbia Gas | EverSource Energy | utility safety violation | 2020 | MA-DPU | $75,000 |
| Boston Gas Company d/b/a National Grid | National Grid | utility safety violation | 2019 | MA-DPU | $75,000 |
| Bay State Gas Company d/b/a Columbia Gas | EverSource Energy | utility safety violation | 2019 | MA-DPU | $75,000 |
| PECO ENERGY COMPANY-GAS | Exelon | utility safety violation | 2012 | PA-PUC | $75,000 |
| Oncor | Sempra Energy | utility service violation | 2019 | TX-PUC | $75,000 |
| Alabama Power Co. | Southern Company | environmental violation | 2022 | AL-ENV | $75,000 |
| Entergy | Entergy | utility service violation | 2022 | TX-PUC | $75,000 |
| AMERIGAS PROPANE, LP | UGI Corp. | workplace safety or health violation | 2015 | OSHA | $75,000 |
| AEP Texas North Company | American Electric Power | utility service violation | 2012 | TX-PUC | $74,500 |
| SHENANGO LLC | DTE Energy | environmental violation | 2014 | PA-ENV | $74,250 |
| ABB, INC | ABB Ltd. | environmental violation | 2011 | EPA | $74,140 |
| Liberty Utilities (EnergyNorth Natural Gas) Corp. d/b/a Liberty | Algonquin Power & Utilities | utility safety violation | 2018 | NH-PUC | $74,000 |
| Xcel I Southwestern Public Service | Xcel Energy | utility service violation | 2019 | TX-PUC | $74,000 |
| SOUTHWESTERN ELECTRIC POWER COMPANY | American Electric Power | utility service violation | 2019 | TX-PUC | $74,000 |
| Duke Energy Progress, LLC | Duke Energy | air pollution violation | 2002 | NC-ENV | $73,615 |
| Suez Energy Marketing NA, Inc. | Engie | utility service violation | 2008 | TX-PUC | $73,375 |
| Virginia Electric and Power Co. | Dominion Energy | environmental violation | 2018 | VA-ENV | $73,351 |
| CONNECTICUT LIGHT & POWER CO | EverSource Energy | environmental violation | 2000 | EPA | $72,930 |
| AEP Texas North Company | American Electric Power | utility service violation | 2018 | TX-PUC | $72,000 |
| AEP Texas Central Company | American Electric Power | utility service violation | 2014 | TX-PUC | $72,000 |
| Washington Gas Light Company | AltaGas | utility safety violation | 2015 | VA-SCC | $72,000 |
| AES Puerto Rico, L.P. | AES Corp. | water pollution violation | 2024 | EPA | $71,845 |
| AES Puerto Rico, L.P | AES Corp. | environmental violation | 2024 | EPA | $71,845 |
| Southern California Edison Co. | Edison International | consumer protection violation | 2022 | CA-PUC | $71,221 |
| Entergy Texas, Inc. | Entergy | utility service violation | 2010 | TX-PUC | $71,000 |
| Virginia Natural Gas, Inc. | Southern Company | utility safety violation | 2016 | VA-SCC | $71,000 |
| San Diego Gas & Electric | Sempra Energy | utility service violation | 2024 | CA-PUC | $70,830 |
| New Jersey Natural Gas | New Jersey Resources | environmental violation | 2021 | NJ-ENV | $70,625 |
| Virginia Natural Gas, Inc. | Southern Company | utility safety violation | 2018 | VA-SCC | $70,500 |
| Pacific Gas and Electric Co. | PG&E Corp. | consumer protection violation | 2022 | CA-PUC | $70,346 |
| AES Huntington Beach, LLC | AES Corp. | air pollution violation | 2002 | CA-SCAQMD | $70,320 |
| Oncor | Sempra Energy | utility service violation | 2013 | TX-PUC | $70,200 |
| AMERIGAS PROPANE LP | UGI Corp. | pipeline safety violation | 2013 | PHMSA | $70,100 |
| Bloom Energy Corporation | Bloom Energy | wage and hour violation | 2012 | WHD | $70,005 |
| Florida Power and Light Company (Turkey Point Nuclear Plant Unit 3) | NextEra Energy | nuclear safety violation | 2010 | NRC | $70,000 |
| Dominion Energy Kewaunee, Inc. | Dominion Energy | nuclear safety violation | 2013 | NRC | $70,000 |
| Entergy Nuclear Operations, Inc. | Entergy | nuclear safety violation | 2014 | NRC | $70,000 |
| Entergy Nuclear Operations, Inc. | Entergy | nuclear safety violation | 2015 | NRC | $70,000 |
| Direct Energy LP | NRG Energy | consumer protection violation | 2017 | TX-PUC | $70,000 |
| Exelon | Exelon | utility service violation | 2015 | TX-PUC | $70,000 |
| MILLER PIPELINE, LLC | CenterPoint Energy | utility safety violation | 2011 | VA-SCC | $70,000 |
| NRG Energy, Inc. | NRG Energy | energy market violation | 2023 | FERC | $70,000 |
| ILLUMINATING CO.; A FIRST ENERGY COMPANY | FirstEnergy | workplace safety or health violation | 2002 | OSHA | $70,000 |
| MISSOURI-AMERICAN WATER COMPANY | American Water Works | workplace safety or health violation | 2012 | OSHA | $70,000 |
| SAN DIEGO GAS AND ELECTRIC | Sempra Energy | workplace safety or health violation | 2015 | OSHA | $70,000 |
| Dolet Hills Lignite Company LLC | American Electric Power | workplace safety or health violation | 2009 | MSHA | $70,000 |
