MISO picks Ameren, GridLiance, Dairyland for $1.23B Iowa grid project

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MISO selects consortium of Ameren, GridLiance, Dairyland to deliver foundational energy grid project in Iowa

October 22, 2026 4:30 PM EDT

ST. LOUIS and JUNO BEACH, Fla., Oct. 22, 2026 /PRNewswire/ -- The Midcontinent Independent System Operator (MISO) has selected a consortium of Ameren Transmission Company of Illinois (ATXI), a subsidiary of Ameren Corporation (NYSE: AEE); GridLiance Heartland, LLC, a subsidiary of NextEra Energy Transmission, LLC; and Dairyland Power Cooperative to develop, build, operate and maintain a major transmission project in... More