MISO selects Iowa backbone transmission consortium

MISO has announced that it selected a consortium led by Ameren Transmission Company of Illinois, GridLiance Heartland, and Dairyland Power Cooperative to develop, build, operate, and maintain the EASL transmission project in Iowa.

• The East Adair – Minnesota/Iowa State Line – Arbor Hill – York Avenue (EASL) project includes a 765-kV backbone, one new 345/765-kV substation, and two new 345-kV transmission lines; it has an estimated cost of approximately $1.23 billion and ownership stakes of 42.5% ATXI, 42.5% GridLiance, and 15% Dairyland.
• The project is part of MISO’s Long Range Transmission Planning Tranche 2.1 Portfolio (approved in December 2024); expected in-service dates are June 1, 2032 for the 345-kV scope and June 1, 2034 for the 765-kV scope, subject to regulatory review and stakeholder engagement.