ST. CLAIR COUNTY, Ill. – Ameren Illinois is set to replace a decades-old pipeline along a 2.9-mile stretch of Illinois Route 157 in Collinsville as part of efforts to meet federal safety standards.

If you have fallen behind on your energy bill, Ameren Illinois has some options. The greatest assistance for customers with ...

Ameren Illinois, an electric and gas utility serving 1.2 million electric customers in the state, joined with EnergyHub to ...