As of January 6, 2026, the Midcontinent Independent System Operator selected a joint venture of American Electric Power and Berkshire Hathaway Energy subsidiaries to build a $1.2 billion 765-kV transmission project in Wisconsin. [1] The project is slated to run 190 miles and must be operating by June 1, 2034. MISO’s report on the selection process states that the Transource and BHE Transmission project demonstrated the most 765 kV capabilities of all developers. MISO also chose Chicago-based Viridon Midcontinent to build a $350 million, 345-kV project in southeast Wisconsin, set to run 105 miles and required to come online by June 1, 2033. Both projects require regulatory and other permitting approvals. They compose part of MISO’s $22 billion Long-Range Transmission Plan Tranche 2.1 portfolio that had been approved by the grid operator’s board in December 2024.
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