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.

SB 28 clarifies that transmission companies (including those not headquartered in Wisconsin) have the right to construct, own, and maintain certain high-voltage transmission lines eligible for regional cost-sharing, provided they connect to their existing facilities. The bill requires these companies to notify the Public Service Commission within 90 days of approval, justify if they decline construction, and submit detailed cost reports showing competitive bidding and quarterly updates. It mandates transparency by requiring companies to report costs charged to consumers outside Wisconsin. The law applies specifically to transmission lines approved in the Midwest Independent System Operator’s plan and directly affects transmission facility owners, not end consumers or other entities. The bill creates new definitions and procedures but does not alter cost-sharing requirements for the lines themselves.