Ameren: Zachary substation, about 32 miles of transmission line energized in June

Ameren said that ATXI expects to invest $250m on the Mark Twain Transmission Project, which is anticipated to be in service in December

Ameren said recently that Ameren Transmission Company of Illinois (ATXI) on June 30 energized the Zachary substation and about 32 miles of transmission line from Kirksville to the Iowa border, as part of the 96-mile, 345-kV Mark Twain Transmission Project.

The foundation and line construction crews will now build the line section between Palmyra and Kirksville, which will be completed later this year, the company said.

Ameren said that ATXI expects to invest $250m on the project, which is anticipated to be in service in December.

As noted on the project’s webpage, ATXI received approval from the Missouri Public Service Commission in January 2018 to proceed with project construction, with the commission granting the company a certificate of convenience and necessity for the project, which will run from Palmyra to Kirksville in Missouri and north to the Iowa border.

The project route will run through Adair, Knox, Lewis, Marion, and Schuyler counties in Missouri, the webpage noted, adding that the Zachary substation site is adjacent to the existing Adair substation in Adair County. Project benefits include improved electric system reliability and improved access to renewable energy sources, according to the webpage.