1. East River Electric Power Cooperative
121 SE 1st St, Madison, SD 57042
Coordinate: 44.00394,-97.11368
Phone: (605) 256-4536
2. Heartland Consumers Power District
432 SE 12th St, Madison, SD 57042
Coordinate: 43.9911,-97.10916
Phone: (605) 256-6536
3. Sioux Valley Energy
121 SE 1st St, Madison, SD 57042
Coordinate: 44.00394,-97.11368
Phone: (605) 256-1600
4. Western Area Power
1301 N Washington Ave, Madison, SD 57042
Coordinate: 44.01919,-97.1098
Phone: (605) 427-9519
5. Northwestern Energy
104 N Egan Ave, Madison, SD 57042
Coordinate: 44.00511,-97.11392
Phone: (605) 256-4526
6. Heartland Consumers Power District
203 W Center St, Madison, SD 57042
Coordinate: 44.005,-97.1154
Phone: (605) 256-6536