The completed Illinois Rivers Project is the third project the company has completed as part of a suite of improvements. Credit: James Wainscoat on Unsplash.

Ameren Transmission Company of Illinois (ATXI) has energised the final span of a $1.4bn power transmission line project in the US.

The Illinois Rivers Project runs between Palmyra, Missouri and Sugar Creek, Indiana. the lines stretch over 375 miles, carrying 345kV.

Go deeper with GlobalData

Go deeper with GlobalData

The gold standard of business intelligence.

Find out more

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

ATXI chairman and president Shawn Schukar said: “Our country’s future energy security and sustainability depends on a strong transmission system to enable the transition from coal to renewable energy.

“The Illinois Rivers Project is an important component to help deliver clean, affordable and reliable energy to communities across the Midwest and ensure the grid can accommodate ever-increasing renewable resources.”

The Illinois Rivers Project is expected to improve energy grid reliability and provide increased transmission capacity.

Approved by the regional transmission organisation Midcontinent Independent System Operator in 2011, the project is part of multi-state group of transmission projects called Multi-Value Projects.

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

Transmission owners in the Midwest have started developing the Multi-Value Projects to improve the regional energy grid. The projects will also help integrate renewable energy to meet public policy goals.

It will also enable Midwestern families and businesses to access lower-cost energy and electricity from renewable sources.

Illinois Rivers is the third project completed by ATXI in the Multi-Value Project.

In February 2018, ATXI completed Spoon River Project in Illinois and announced the completion of Mark Twain Transmission Project, which went into service in Northeast Missouri in December 2019.

ATXI is a wholly-owned subsidiary of Ameren that has a transmission system of more than 8,000 circuit miles of high-voltage transmission lines across a variety of energy markets.

Power Technology Excellence Awards - Nominations Closed

Nominations are now closed for the Power Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
Recognised with three 2025 Power Technology Excellence Awards, Hover Energy is at the forefront of intelligent microgrids and distributed renewables. Explore how its AI-enabled Microgrid Management System™ , strategic partnerships and networked microgrids are rebuilding the grid from the ground up for a more flexible, resilient energy future.

Discover the Impact