 Alabama Municipal Electric Authority | Alabama, Mississippi |
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| American Municipal Power Inc. (AMP) | Michigan, Ohio, Ohio, Pennsylvania, Virginia, West Virginia |
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| American Municipal Power, Inc. (AMP) | Pennsylvania, Virginia, West Virginia |
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| Crawfordsville Electric Light & Power | Indiana |
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| Electric Cities of Georgia, Inc. | Georgia |
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| ElectriCities of North Carolina | North Carolina |
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| Florida Municipal Electric Association | Florida |
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| Hometown Connections | Connecticut, Delaware, Maine, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, Tennessee, Vermont |
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| Illinois Municipal Electric Agency | Illinois |
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| Indiana Municipal Electric Association | Indiana |
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| Kansas Power Pool | Kansas |
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| Kentucky Municipal Utilities Association | Kentucky |
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| Michigan Municipal Electric Association | Michigan |
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| Missouri Public Utility Alliance | Missouri |
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| Missouri River Energy Services | Iowa, Minnesota, North Dakota, South Dakota |
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| Municipal Electric Systems of Oklahoma | Oklahoma |
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| NMPP Energy | Colorado, Iowa, Nebraska, Wyoming |
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| Northeast Public Power Association | Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont |
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| Piedmont Municipal Power Agency | South Carolina |
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| Tennessee Municipal Electric Power Association | Tennessee |
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| Texas Public Power Association | Texas |
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