Ameren Transmission Company of Illinois selects final route for Mark Twain Transmission Project

Published on September 08, 2017 by Kevin Randolph

Ameren Transmission Company of Illinois (ATXI) selected this week a final route for its Mark Twain Transmission Project, a 345,000-volt transmission line and substation to be built in northeast Missouri.

The line will run for approximately 100 miles through Adair, Knox, Lewis, Marion and Schuyler counties almost entirely on existing right of way. The project will include construction of the Zachary Substation adjacent to the existing Adair Substation in Adair County.

“The final route was selected based on feedback from landowners and community members during the past several months,” Shawn E. Schukar, chairman and president of ATXI, said. “We are grateful to those who took the time to share their opinions and preferences with us, and we look forward to working together with Northeast Power and Ameren Missouri as we move forward with this important project for northeast Missouri.”

The route will co-locate on existing right of way on Northeast Missouri Electric Power Cooperative’s (Northeast Power) 161,000-volt line between Palmyra and Kirksville and Ameren Missouri’s 161,000-volt line from Kirksville to the Iowa border. The project will include rebuilding Northeast Power’s existing transmission line between Palmyra and Kirksville.

The commissions of the five counties where the line will be located have approved the project. ATXI must now seek final approval from the Missouri Public Service Commission (PSC) before beginning construction. It plans to file for a certificate of convenience and necessity with the PSC in mid-September.

ATXI expects the project to cost approximately $250 million and to be completed in December 2019.