| Ameren |
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American Electric Power | American Electric Power |
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| American Public Power Association |
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Arizona Public Service | Arizona Public Service |
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Associated Electric Cooperative Inc. | |
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Consumers Energy | |
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DTE Energy | |
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| Duke Energy |
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Louisville Gas & Electric/Kentucky Utilities (LG&E/KU) | Louisville Gas & Electric/Kentucky Utilities (LG&E/KU) |
---|
National Rural Electric Cooperative Association (NRECA) | |
---|
| NRG Energy |
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Oglethorpe Power | |
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Ohio Valley Electric Corporation (OVEC) | Ohio Valley Electric Corporation (OVEC) |
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Salt River Project | |
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Southern Company | Southern Company |
---|
| Talen Generation |
---|
Tri-State | |
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Tucson Electric Power | |
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Tennessee Valley Authority (TVA) | |
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Vistra | Vistra |
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Wabash Valley Power Alliance | |
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