CSA Members
- Bon Homme Yankton Electric Assn.
- Central Electric Cooperative Association
- Charles Mix Electric Association
- City of Elk Point
- Clay Union Electric Corporation
- Codington-Clark Electric Cooperative
- Dakota Energy Cooperative
- Douglas Electric Cooperative
- FEM Electric Association
- H-D Electric Cooperative
- Kingsbury Electric Cooperative
- Lake Region Electric Association
- Lyon-Lincoln Electric Cooperative
- Northern Electric Cooperative
- Oahe Electric Cooperative
- Renville-Sibley Coop. Power Assn.
- Southeastern Electric Coop
- Sioux Valley Energy
- Traverse Electric Cooperative
- Union County Electric Cooperative
- Whetstone Valley Electric Cooperative
Liz Avery
CSA Administrator
East River Electric
Power Cooperative
211 S Harth Ave
PO Box 227
Madison, SD 57042
605.256.4536