Relating to: an incumbent transmission facility owner’s right to construct, own, and maintain certain transmission facilities and Public Service Commission procedures if the transmission facility is a regionally cost-shared transmission line.

AB 25 grants transmission companies (incumbent owners) the right to construct, own, and maintain specific high-voltage transmission lines approved in the Midwest Independent System Operator's (MISO) regional plan, provided the lines connect to their existing facilities. It requires these owners to notify Wisconsin's Public Service Commission within 90 days of MISO approval, provide competitive-bid cost estimates, and submit quarterly cost reports during construction. The bill also mandates disclosure of costs charged to out-of-state energy consumers for these regionally cost-shared lines. These provisions apply to transmission lines eligible for regional cost sharing under MISO, without requiring a right of first refusal.