| Callaway Electric Cooperative |
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Fulton, MO |
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| Carbon Power & Light Inc. |
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Saratoga, WY |
UNITED STATES |
| Carolina Gas Transmission |
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Columbia, SC |
UNITED STATES |
| Cascade Natural Gas Corp. |
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Kennewick, WA |
UNITED STATES |
| Cedar-Knox Public Power District |
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Hartington, NE |
UNITED STATES |
| CenterPoint Energy |
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Houston, TX |
UNITED STATES |
| Central California Power Agency |
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Sacramento, CA |
UNITED STATES |
| Central City |
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Central City, NE |
UNITED STATES |
| Central Lincoln People’s Utility District |
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Newport, OR |
UNITED STATES |
| Central Maine Power Company |
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Augusta, ME |
UNITED STATES |
| Central New Mexico Electric Cooperative |
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Mountainair, NM |
UNITED STATES |
| Chester |
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Chester, NE |
UNITED STATES |
| Chimney Rock Public Power District |
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Bayard, NE |
UNITED STATES |
| Chugach Electric Association Inc. |
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Anchorage, AK |
UNITED STATES |
| Cincinnati Gas & Electric Co. (CINERGY) |
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Plainfield, IN |
UNITED STATES |
| City Utilities of Springfield |
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Springfield, MO |
UNITED STATES |
| Clay Electric Cooperative Inc. |
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Keystone Heights, FL |
UNITED STATES |
| Cleveland Utilities Authority |
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Cleveland, TN |
UNITED STATES |
| Columbia Energy, LLC |
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Walla Walla, WA |
UNITED STATES |
| Columbus Electric Cooperative |
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Deming, NM |
UNITED STATES |
| Columbus Southern Power Company |
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Columbus, OH |
UNITED STATES |
| Commonwealth Edison |
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Chicago, IL |
UNITED STATES |
| Connecticut Light & Power |
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Hartford, CT |
UNITED STATES |
| Connecticut Natural Gas Corporation |
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Hartford, CT |
UNITED STATES |
| Constellation Energy Group Inc. |
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Baltimore, MD |
UNITED STATES |
| Consumers Power Inc. |
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Philomath, OR |
UNITED STATES |
| Continental Divide Electric Cooperative |
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Grants, NM |
UNITED STATES |
| Cooperative Energy |
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Hattiesburg, MS |
UNITED STATES |
| Corn Belt Power Cooperative |
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Humboldt, IA |
UNITED STATES |
| Cornhusker Public Power District |
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Columbus, NE |
UNITED STATES |
| Cozad |
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Cozad, NE |
UNITED STATES |
| CPS Energy |
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San Antonio, TX |
UNITED STATES |
| Cuming County Public Power District |
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West Point, NE |
UNITED STATES |
| Custer Public Power District |
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Broken Bow, NE |
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