- Aberdeen Electric Department
- Albertville Municipal Utilities Board
- Alcoa Electric Department, City of
- Amory Utilities
- Athens Utilities (AL)
- Benton Electric System
- Benton County Electric System
- Bolivar Energy Authority
- Bowling Green Municipal Utilities
- Bristol Tennessee Essential Services
- BVU Authority
- Brownsville Energy Authority
- Carroll County Electric Department
- Electric Power Board of Chattanooga
- Chickamauga Electric System
- Clarksville Department of Electricity
- Cleveland Utilities Authority
- Clinton Utilities Board
- Columbia Power & Water Systems
- Columbus Light & Water
- Cookeville Electric Department
- Courtland Electric Department
- Covington Electric System
- Cullman Power Board
- Dayton Electric Department, City of
- Decatur Utilities
- Dickson Electric System
- Dyersburg Electric System
- Elizabethton Electric Department, City of
- Erwin Utilities Authority
- Etowah Utilities
- Fayetteville Public Utilities
- Florence Utilities
- Fort Payne Improvement Authority
- Franklin Electric Plant Board
- Fulton Electric System
- Gallatin Department of Electricity
- Glasgow Electric Plant Board
- Greeneville Energy Authority
- Guntersville Electric Board
- Harriman Utility Board
- Hartselle Utilities
- Hickman Electric System
- Holly Springs Utility Department
- Hopkinsville Electric System
- Humboldt Utilities Authority
- Huntsville Utilities
- Jackson Energy Authority
- Jellico Utilities Authority
- Johnson City Energy Authority
- Knoxville Utilities Board
- LaFollette Utilities
- Lawrenceburg Utility Systems
- Lenoir City Utilities Board
- Lewisburg Electric System
- Lexington Electric System
- Loudon Utilities
- Louisville Utilities
- Macon Electric Department, City of
- Maryville Electric Department, City of
- Mayfield Electric & Water Systems
- McMinnville Electric System
- Milan Public Utilities Authority
- Morristown Utilities Commission
- Mount Pleasant Power System
- Murphy Electric Power Board
- Murray Electric System
- Muscle Shoals Electric Board
- Nashville Electric Service
- New Albany Light, Gas & Water
- Newbern Electric Water & Gas
- Newport Utilities
- Oak Ridge Electric Department
- Okolona Electric Department, City of
- Oxford Utilities
- Paris Utility Authority
- Philadelphia Utilities
- Pulaski Electric System
- Ripley Power & Light
- Rockwood Electric Utility
- Russellville Electric Board (AL)
- Russellville Electric Plant Board (KY)
- Scottsboro Electric Power Board
- Sevier County Electric System
- Sheffield Utilities
- Shelbyville Power System
- Smithville Electric System
- Sparta Electric & Public Works
- Springfield Electric
- Starkville Utilities
- Sweetwater Utilities Board
- Tarrant Electric Board
- Trenton Light & Water Department
- Tullahoma Utilities Authority
- Tupelo Water & Light Department, City of
- Tuscumbia Electricity Department
- Union City Energy Authority
- Water Valley Electric Department, City of
- Weakley County Municipal Electric System
- West Point Electric System
- Winchester Utilities
- Alcorn County Electric Power Association
- Appalachian Electric Cooperative
- Arab Electric Cooperative, Inc.
- Blue Ridge Mountain Electric Membership Corporation
- Caney Fork Electric Cooperative, Inc.
- Central Electric Power Association
- Cherokee Electric Cooperative
- Chickasaw Electric Cooperative
- Cullman Electric Cooperative
- Cumberland Electric Membership Corporation
- Duck River Electric Membership Corporation
- East Mississippi Electric Power Association
- Forked Deer Electric Cooperative, Inc.
- Fort Loudoun Electric Cooperative
- 4-County Electric Power Association
- Franklin Electric Cooperative
- Gibson Electric Membership Corporation
- Holston Electric Cooperative
- Joe Wheeler Electric Membership Corporation
- Marshall-DeKalb Electric Cooperative
- Meriwether Lewis Electric Cooperative
- Middle Tennessee Electric Membership Corporation
- Monroe County Electric Power Association
- Mountain Electric Cooperative
- Natchez Trace Electric Power Association
- North Alabama Electric Cooperative
- Northcentral Electric Cooperative
- North East Mississippi Electric Power Association
- Pennyrile Rural Electric Cooperative Corporation
- Pickwick Electric Cooperative
- Plateau Electric Cooperative
- Pontotoc Electric Power Association
- Powell Valley Electric Cooperative
- Prentiss County Electric Power Association
- Sand Mountain Electric Cooperative
- Sequachee Valley Electric Cooperative
- Southwest Tennessee Electric Membership Corporation
- Tallahatchie Valley Electric Power Association
- Tennessee Valley Electric Cooperative
- Tippah Electric Power Association
- Tishomingo County Electric Power Association
- Tombigbee Electric Power Association
- Tri-County Electric Membership Corporation
- Tri-State Electric Membership Corporation
- Upper Cumberland Electric Membership Corporation
- Warren Rural Electric Cooperative Corporation
- West Kentucky Rural Electric Cooperative Corporation
