Main Campus Address
East River Electric Power Cooperative, Inc.
PO Box 227
211 South Harth Ave.
Madison, SD 57042-0227
Shipping Address
45341 SD Hwy 34
Madison, SD 57042
General Questions
Phone: 605.256.4536
Email
Fax Us
Main Campus: 605.256.8058
Member Services: 605.256.8057
Dispatch: 605.256.8056
Regulator Shop: 605.256.8055
Service Center: 605.256.8059
Management: 605.256.8054
Human Resources: 605.256.8154
