Owners

ATC is a privately owned company. Utilities, municipalities, municipal electric companies and electric cooperatives from Wisconsin, Michigan, Minnesota and Illinois have an ownership stake in ATC.

  • Adams-Columbia Electric Cooperative
  • Alger Delta Cooperative Electric Association
  • City of Algoma
  • Badger Power Marketing Authority
  • Central Wisconsin Electric Cooperative
  • Cloverland Electric Cooperative
  • City of Columbus
  • City of Kaukauna
  • Madison Gas & Electric Co.
  • Manitowoc Public Utilities
  • Marshfield Electric and Water Department
  • City of Oconto Falls
  • Ontonagon County Rural Electrification Association
  • City of Plymouth
  • Rainy River Energy Corp. – Wisconsin
  • City of Reedsburg
  • Rock Energy Cooperative
  • City of Sheboygan Falls
  • Stoughton Utilities
  • City of Sturgeon Bay
  • City of Sun Prairie
  • Upper Peninsula Power Company
  • Upper Peninsula Public Power Agency
  • Wisconsin Electric Power Co.
  • Wisconsin Power & Light Co.
  • Wisconsin Public Service Corp.
  • City of Wisconsin Rapids
  • WPPI Energy