Ameren Corp. subsidiary Ameren Transmission Co. of Illinois completed and placed its 96-mile, 345-kV Mark Twain transmission line and substation in northeast Missouri into service on Dec. 19, 2019, in line with expectations.

The $267 million transmission project, also known as MVP 8 and referred to by Midcontinent ISO as the Zachary-Maywood line, now provides improved energy grid reliability, increased transmission capacity and greater access to renewable sources such as wind, according to a Jan. 6 news release.

"Because of our focus on communication, our contract partners were able to quickly move forward on key construction phases, meet crucial deadlines and now energize this important infrastructure project that bolsters the energy grid," Ameren Transmission Chairman and President Shawn Schukar said.

The company completed a 32-mile segment of the project in June 2019.