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MISO selects consortium of Ameren, GridLiance, Dairyland, Illinois Municipal Electric Agency to deliver major grid-bolstering projects in Illinois

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; Dairyland Power Cooperative; and the Illinois Municipal Electric Agency (IMEA) to develop, build, operate and maintain two major transmission projects. ATXI and GridLiance will lead the development of these projects, while Dairyland and IMEA will

articleAmeren CorporationMay 19, 20265/company/ameren-corp/news/miso-selects-consortium-of-ameren-gridliance-dairyland-illinois-municipal-electric-agency-to-deliver-major-grid-bolstering-projects-in-illinois
MISO selects consortium of Ameren, GridLiance, Dairyland, Illinois Municipal Electric Agency to deliver major grid-bolstering projects in Illinois

About this update from Ameren Corporation

[{"type":"text","content":"ST. LOUIS, May 19, 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; Dairyland Power Cooperative; and the Illinois Municipal Electric Agency (IMEA) to develop, build, operate and maintain two major transmission projects. ATXI and GridLiance will lead the development of these projects, while Dairyland and IMEA will own a portion of both projects when they are placed in service.","length":609,"tagName":"p"},{"type":"image","alt":"MISO has selected a consortium of Ameren, GridLiance, Dairyland and IMEA to deliver major grid-bolstering projects in Illinois.","displaySize":"","headline":null,"caption":"MISO has selected a consortium of Ameren, GridLiance, Dairyland and IMEA to deliver major grid-bolstering projects in Illinois.","className":"","disableSlideshowImg":false,"size":{"original":{"width":400,"height":368,"url":"https://media.zenfs.com/en/prnewswire.com/5a0825eb3100847382b21d34868c07a2"},"resized":{"url":"https://s.yimg.com/ny/api/res/1.2/U.ilXdkDaWlVV3CM8FND.g--/YXBwaWQ9aGlnaGxhbmRlcjt3PTcwNTtoPTY0OQ--/https://media.zenfs.com/en/prnewswire.com/5a0825eb3100847382b21d34868c07a2","width":400,"height":368},"resize_sm":{"url":"https://s.yimg.com/ny/api/res/1.2/.HNTIgFEr9_mQewdFDFhAg--/YXBwaWQ9aGlnaGxhbmRlcjt3PTY0MDtoPTU4OQ--/https://media.zenfs.com/en/prnewswire.com/5a0825eb3100847382b21d34868c07a2","width":400,"height":368}},"href":"https://mma.prnewswire.com/media/2982694/MISO_Ameren_Consortium.html","hrefExternal":true,"rel":"nofollow"},{"type":"text","content":"The Sub T – Iowa/Illinois State Line – Woodford County (STIW) and Woodford County – Illinois/Indiana State Line (WIIL) projects are the foundation of a new 765-kilovolt (kV) backbone that will deliver safe, reliable and cost-competitive energy to serve Midwest communities for decades to come.","length":293,"tagName":"p"},{"type":"text","content":"The STIW project includes the construction of two new 765-kV transmission lines spanning approximately 149 miles. One 765-kV line will run from the Woodford County Substation west to the Iowa/Illinois state line, and the other 765-kV line will continue west from the Iowa/Illinois state line to the S...

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AmerenDairyland Power CooperativeIMEAWoodford CountyTransmissionNextEra Energytransmission linesIllinoisIllinoisMISO