Duff to Coleman

Increasing electric transmission capacity while providing cost benefits

Based on the need identified by the Midcontinent Independent System Operator (MISO), Republic Transmission is installing a new high-voltage transmission line between the existing Duff substation in southern Indiana and the existing Coleman EHV substation in northern Kentucky. To execute the Duff to Coleman Project, Republic Transmission has collaborated with three experienced utility companies: LS Power, Hoosier Energy and Big Rivers Electric Corporation. The result will be safe and reliable delivery of power while lowering system costs for consumers across the entire MISO electric transmission grid.

About Republic Transmission

Transmitting reliable and cost-effective electricity

Republic Transmission, LLC, was founded to develop, own, and operate reliable and cost-effective electric transmission facilities in the Midcontinent Independent System Operator (MISO) region.

Working closely, proactively and diligently with landowners and stakeholders, we strive for complete transparency while developing and operating our transmission lines in a safe, reliable and environmentally conscious manner.

One of Republic Transmission’s top priorities is to keep landowners and stakeholders informed about the projects that involve them. On this website, you can find a complete, detailed picture of our projects and follow their progress through timelines, maps, announcements of upcoming public meetings, as well as past meeting notes and other key information.


Need more information about the Duff to Coleman Project? Contact us.

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