| Illinois Power Company | Ameren | labor relations violation | 2000 | NLRB | $20,000 |
| Cinergy Corporation | Duke Energy | labor relations violation | 2000 | NLRB | $50,000 |
| Pennsylvania American Water Works | American Water Works | labor relations violation | 2000 | NLRB | $21,000 |
| Siemens Power Corp. and Siemens Westinghouse Corp. | Siemens Energy | labor relations violation | 2000 | NLRB | $8,011 |
| CINERGY CORP. | Duke Energy | labor relations violation | 2000 | NLRB | $50,000 |
| Dresser Rand Company | Siemens Energy | labor relations violation | 2000 | NLRB | $9,000 |
| TPI IOWA, LLC. | TPI Composites | labor relations violation | 2017 | NLRB | $22,611 |
| Tampa Electric Company, a wholly owned subsidiary of TECO Energy, Inc., d/b/a TECO People Gas | Emera | labor relations violation | 2017 | NLRB | $28,458 |
| Exelon Generation Company, LLC | Exelon | labor relations violation | 2017 | NLRB | $10,000 |
| AmeriGas Propane, Inc. | UGI Corp. | labor relations violation | 2023 | NLRB | $62,486 |
| Florida Power & Light Company | NextEra Energy | labor relations violation | 2021 | NLRB | $34,521 |
| Vivint Solar | Sunrun Inc. | labor relations violation | 2020 | NLRB | $57,682 |
| Amerigas Propane LP | UGI Corp. | motor vehicle safety violation | 2013 | FMCSA | $20,520 |
| Green Mountain Power Corporation | Energir | motor vehicle safety violation | 2014 | FMCSA | $8,140 |
| Amerigas Propane, LP | UGI Corp. | motor vehicle safety violation | 2010 | FMCSA | $12,400 |
| Avista Corporation | Avista | motor vehicle safety violation | 2012 | FMCSA | $7,272 |
| Amerigas Propane LP | UGI Corp. | motor vehicle safety violation | 2010 | FMCSA | $10,000 |
| ARTESIAN WATER COMPANY, INC. | Artesian Resources | motor vehicle safety violation | 2009 | FMCSA | $19,490 |
| ABB INC | ABB Ltd. | motor vehicle safety violation | 2005 | FMCSA | $6,680 |
| AMERIGAS EAGLE PROPANE LP | UGI Corp. | motor vehicle safety violation | 2005 | FMCSA | $8,550 |
| Virginia Electric & Power Co. | Dominion Energy | motor vehicle safety violation | 2016 | FMCSA | $5,100 |
| Artesian Water Co Inc | Artesian Resources | motor vehicle safety violation | 2021 | FMCSA | $13,560 |
| West Virginia American Water Company | American Water Works | motor vehicle safety violation | 2021 | FMCSA | $7,540 |
| Miller Pipeline LLC | CenterPoint Energy | motor vehicle safety violation | 2023 | FMCSA | $5,900 |
| Plug Power Inc | Plug Power Inc. | motor vehicle safety violation | 2023 | FMCSA | $6,190 |
| Florida Power and Light Company (Turkey Point Nuclear Plant Unit 3) | NextEra Energy | nuclear safety violation | 2010 | NRC | $70,000 |
| Entergy Operations, Inc. (River Bend Station) | Entergy | nuclear safety violation | 2012 | NRC | $140,000 |
| Florida Power and Light (Turkey Point Nuclear Plant, Units 3 & 4) | NextEra Energy | nuclear safety violation | 2012 | NRC | $140,000 |
| 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 |
| Dominion Energy Kewaunee, Inc | Dominion Energy | nuclear safety violation | 2015 | NRC | $17,500 |
| Entergy Nuclear Operations, Inc. | Entergy | nuclear safety violation | 2015 | NRC | $70,000 |
| FirstEnergy Nuclear Operating Company | FirstEnergy | nuclear safety violation | 2006 | NRC | $28,000,000 |
| Exelon Generation Company, LLC | Exelon | nuclear safety violation | 2009 | NRC | $65,000 |
| Entergy Nuclear Operations, Inc. | Entergy | nuclear safety violation | 2008 | NRC | $650,000 |
| Exelon Nuclear | Exelon | nuclear safety violation | 2007 | NRC | $65,000 |
| Entergy Nuclear Operations, Inc. | Entergy | nuclear safety violation | 2007 | NRC | $130,000 |
| Pacific Gas and Electric Company | PG&E Corp. | nuclear safety violation | 2005 | NRC | $96,000 |
| Indiana Michigan Power Company | American Electric Power | nuclear safety violation | 2005 | NRC | $60,000 |
| Entergy Nuclear Operations, Inc. | Entergy | nuclear safety violation | 2005 | NRC | $60,000 |
| Exelon Nuclear | Exelon | nuclear safety violation | 2005 | NRC | $10,000 |
| FirstEnergy Nuclear Operating Company | FirstEnergy | nuclear safety violation | 2005 | NRC | $5,450,000 |
| Arizona Public Service Company | Pinnacle West Capital | nuclear safety violation | 2005 | NRC | $55,000 |
| Duke Energy | Duke Energy | nuclear safety violation | 2004 | NRC | $60,000 |
| Carolina Power & Light Company | Duke Energy | nuclear safety violation | 2004 | NRC | $88,000 |
| Exelon Nuclear | Exelon | nuclear safety violation | 2003 | NRC | $60,000 |
| Framatome ANP Richland, Inc. | EDF-Electricite de France | nuclear safety violation | 2002 | NRC | $15,000 |
| Dominion Nuclear Connecticut, Inc. | Dominion Energy | nuclear safety violation | 2002 | NRC | $88,000 |
| Union Electric Company | Ameren | nuclear safety violation | 2001 | NRC | $55,000 |
| FirstEnergy Nuclear Operating Company | FirstEnergy | nuclear safety violation | 2000 | NRC | $110,000 |
| Commonwealth Edison Company | Exelon | nuclear safety violation | 2000 | NRC | $110,000 |
| Consolidated Edison Company of New York | Consolidated Edison | nuclear safety violation | 2000 | NRC | $88,000 |
| Southern Nuclear Operating Company, Inc. | Southern Company | nuclear safety violation | 2018 | NRC | $145,000 |
| Southern California Edison Company | Edison International | nuclear safety violation | 2019 | NRC | $116,000 |
| Entergy | Entergy | nuclear safety violation | 2012 | NY-ENV | $1,200,000 |
| Florida Power & Light Company | NextEra Energy | nuclear safety violation | 2021 | NRC | $150,000 |
| Entergy Operations, Inc. | Entergy | nuclear safety violation | 2021 | NRC | $150,000 |
| Exelon Corporation | Exelon | price-fixing or anti-competitive practices | 2012 | DOJ_ANTITRUST | $400,000 |
| KeySpan Corporation | National Grid | price-fixing or anti-competitive practices | 2010 | DOJ_ANTITRUST | $12,000,000 |
| Arizona Public Service Company | Pinnacle West Capital | price-fixing or anti-competitive practices | 2014 | FERC | $3,250,000 |
| Mirant Americas Energy Marketing LP | NRG Energy | price-fixing or anti-competitive practices | 2004 | CFTC | $12,500,000 |
| Aquila Merchant Services | Evergy Inc. | price-fixing or anti-competitive practices | 2004 | CFTC | $26,500,000 |
| e prime, Inc. | Xcel Energy | price-fixing or anti-competitive practices | 2004 | CFTC | $16,000,000 |
| Reliant Energy Services, Inc. | NRG Energy | price-fixing or anti-competitive practices | 2003 | CFTC | $18,000,000 |
| Duke Energy Trading and Marketing, L.L.C. | Duke Energy | price-fixing or anti-competitive practices | 2003 | CFTC | $28,000,000 |
| Dynegy Marketing & Trade (Dynegy) and West Coast Power LLC | Vistra Energy | price-fixing or anti-competitive practices | 2002 | CFTC | $5,000,000 |
| Avista Energy | Avista | price-fixing or anti-competitive practices | 2001 | CFTC | $2,100,000 |
| Duke Energy | Duke Energy | price-fixing or anti-competitive practices | 2003 | FERC | $2,500,000 |
| ABB Middle East & Africa Participations AG | ABB Ltd. | price-fixing or anti-competitive practices | 2001 | DOJ_ANTITRUST | $53,000,000 |
| Direct Energy Services, LLC | NRG Energy | price-fixing or anti-competitive practices | 2014 | FERC | $51,935 |
| Southern California Edison Company | Edison International | price-fixing or anti-competitive practices | 2014 | FERC | $650,000 |
| Berkshire Power Company LLC and Power Plant Management Services LLC | Tenaska | price-fixing or anti-competitive practices | 2016 | FERC | $3,042,563 |
| Duke Energy | Duke Energy | price-fixing or anti-competitive practices | 2004 | MULTI-AG | $207,500,000 |
| Dynegy | Vistra Energy | price-fixing or anti-competitive practices | 2004 | CA-AG | $281,500,000 |
| Mirant Corporation | NRG Energy | price-fixing or anti-competitive practices | 2005 | CA-AG | $749,700,000 |
| Powerex | BC Hydro | price-fixing or anti-competitive practices | 2013 | CA-AG | $750,000,000 |
| Reliant Energy, Inc. | NRG Energy | price-fixing or anti-competitive practices | 2005 | MULTI-AG | $460,000,000 |
| Sempra Energy Corporation | Sempra Energy | price-fixing or anti-competitive practices | 2006 | NV-AG | $30,000,000 |
| Reliant Energy Services Inc. | NRG Energy | price-fixing or anti-competitive practices | 2007 | USAO | $22,200,000 |
| American Electric Power Company Inc. | American Electric Power | price-fixing or anti-competitive practices | 2017 | private lawsuit-federal | $9,400,000 |
| American Electric Power Company Inc. | American Electric Power | price-fixing or anti-competitive practices | 2009 | private lawsuit-federal | $1,750,000 |
| AmeriGas Propoane LP | UGI Corp. | price-fixing or anti-competitive practices | 2020 | private lawsuit-federal | $6,312,500 |
| Aquila Merchant Services Inc. | Evergy Inc. | price-fixing or anti-competitive practices | 2007 | private lawsuit-federal | $1,013,846 |
| CenterPoint Energy Services, Inc. | CenterPoint Energy | price-fixing or anti-competitive practices | 2019 | private lawsuit-federal | $14,750,000 |
| CMS Energy Resource Management | CMS Energy | price-fixing or anti-competitive practices | 2020 | private lawsuit-federal | $15,000,000 |
| CMS Energy Resources Management | CMS Energy | price-fixing or anti-competitive practices | 2007 | private lawsuit-federal | $700,000 |
| CMS Energy Resources Management | CMS Energy | price-fixing or anti-competitive practices | 2017 | private lawsuit-federal | $5,125,000 |
| Duke Energy | Duke Energy | price-fixing or anti-competitive practices | 2016 | private lawsuit-federal | $80,875,000 |
| Duke Energy Trading and Marketing L.L.C. | Duke Energy | price-fixing or anti-competitive practices | 2017 | private lawsuit-federal | $9,400,000 |
| Duke Energy Trading and Marketing L.L.C. | Duke Energy | price-fixing or anti-competitive practices | 2009 | private lawsuit-federal | $3,466,667 |
| Dynegy Inc. | Vistra Energy | price-fixing or anti-competitive practices | 2007 | private lawsuit-federal | $2,400,000 |
| Dynegy Inc. | Vistra Energy | price-fixing or anti-competitive practices | 2019 | private lawsuit-federal | $4,500,000 |
| e Prime Inc. | Xcel Energy | price-fixing or anti-competitive practices | 2009 | private lawsuit-federal | $500,000 |
| e Prime Inc. | Xcel Energy | price-fixing or anti-competitive practices | 2019 | private lawsuit-federal | $2,750,000 |
| Reliant Energy Services Inc. | NRG Energy | price-fixing or anti-competitive practices | 2009 | private lawsuit-federal | $3,466,666 |
| Sempra Energy Corporation | Sempra Energy | price-fixing or anti-competitive practices | 2009 | private lawsuit-federal | $2,000,000 |
| Xcel Energy Inc. | Xcel Energy | price-fixing or anti-competitive practices | 2021 | private lawsuit-federal | $2,500,000 |
| National Grid USA | National Grid | privacy violation | 2022 | private lawsuit-federal | $38,500,000 |
| Cedar Rapids and Iowa City Railway | Alliant Energy | railroad safety violation | 2013 | FRA | $6,500 |
| Cedar Rapids and Iowa City Railway | Alliant Energy | railroad safety violation | 2014 | FRA | $8,000 |
| EES COKE BATTERY LLC | DTE Energy | railroad safety violation | 2011 | FRA | $5,000 |
