Ameren Transmission to hold second round of open houses for Illinois Valley Reliability Project

Community invited to share input on proposed routes and take part in planning process

Peru, Ill. (Sept. 19, 2025) - Ameren Transmission is inviting community members to provide input on the Illinois Valley Reliability Project, a 23-mile transmission line designed to boost energy reliability, strengthen the grid and support local growth in Bureau and LaSalle counties.

Open houses will be held:

• Monday, Sept. 22: 11 a.m. to 1 p.m. and 5 to 7 p.m. at Peru City Hall, 1901 4th St., Peru
• Tuesday, Sept. 23: 11 a.m. to 1 p.m. and 5 to 7 p.m. at Bureau County Metro Center, 837 Park Avenue West, Princeton.
• A virtual open house will be available on the project's website from Sept. 19 to Oct. 3.

The Illinois Valley Reliability Project includes construction of a new, approximately 23-mile, 138-kilovolt transmission line; upgrades to the existing Princeton substation; and construction of a new switching station, to be called Lima, near Peru. The transmission line will connect the new Lima switching station to the upgraded Princeton substation.

Each open house will share identical information, including project updates, and give residents the opportunity to review potential route segments and provide input. All sessions are informal, with no set agenda or presentation - attendees may come and go at their convenience. A virtual open house option will be available online from Sept. 19 to Oct. 3, 2025. The virtual option features a slide deck with project and routing details, along with an interactive map where comments can be added. More information is available on the project website. A final round of open houses will be held in November.

"This second round is another important step to listen and learn from neighbors as we refine route options," said Keith Jones, project manager for the Illinois Valley Reliability Project. "We strongly encourage residents of Bureau and LaSalle counties to attend, ask questions and share their perspectives."

The project is scheduled to be in service by late 2029. For more information, visit Ameren.com/IllinoisValley, email [email protected] or call the project hotline at 833.478.7733.

About Ameren Corporation
St. Louis-based Ameren Corporation powers the quality of life for 2.5 million electric customers and more than 900,000 natural gas customers in a 64,000-square-mile area through its Ameren Missouri and Ameren Illinois rate-regulated utility subsidiaries. Ameren Illinois provides electric transmission and distribution service and natural gas distribution service. Ameren Missouri provides electric generation, transmission and distribution services, as well as natural gas distribution service. Ameren Transmission Company of Illinois develops, owns and operates rate-regulated regional electric transmission projects in the Midcontinent Independent System Operator, Inc. For more information, visit Ameren.com, or follow us at @AmerenCorp, Facebook.com/AmerenCorp, or LinkedIn.com/company/Ameren.