Interconnection Guidelines--

Wisconsin Administrative Code Chapter PSC 119 "RULES FOR INTERCONNECTING DISTRIBUTED GENERATION FACILITIES"
has been revised (effective May 1, 2024).

New Interconnection forms and agreements are available at PSC Customer-Owned Electrical Generation

Wisconsin Utilities provide a range of technical information and guidance to their customers for interconnection of distributed generation facilities.

• Alliant Energy

  Connecting to Alliant Energy's grid

  Alliant Energy Rules and Guidelines - before beginning the interconnection process (for Wisconsin customers)

  Distributed Generation Assist Tool (for installers)




• Madison Gas & Electric

  Customer-Owned Generation




• We Energies or Wisconsin Public Service

  Customer-Owned Generation Manual (list of Company requirements, not a design guide)




• WPPI Energy

  serves not-for-profit, locally owned utilities (51 communities in Wisconsin, Iowa and Upper Michigan)

  If your local Wisconsin utility is served by WPPI Energy, see an example of a guidelines pdf from Sun Prairie Utilities.




• Xcel Energy

  (resources on how to interconnect your generation or storage system with Xcel's local grid)

  Before Interconnecting

  WI Interconnection Application Process




• Wisconsin Electric Cooperatives (IRWEC)

  INTERCONNECTION REQUIREMENTS (pdf) version 1.3, Updated 9/11/25 with participating electric coops listed.