- Barry Electric Cooperative
- Barton County Electric Cooperative
- Central Rural Electric Cooperative
- Cookson Hills Electric Cooperative
- East Central Electric Cooperative
- Indian Electric Cooperative
- Kiamichi Electric Cooperative
- Lake Region Electric Cooperative
- New-Mac Electric Cooperative
- Northeast Oklahoma Electric Cooperative
- Osage Valley Electric Cooperative
- Ozark Electric Cooperative
- Ozarks Electric Cooperative
- Sac Osage Electric Cooperative
- Southwest Electric Cooperative
- Verdigris Valley Electric Cooperative
- White River Electric Cooperative
