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A set of electric meters in Chicago. Residential Commonwealth Edison customers will see an average $10.60 increase in monthly bills this summer. Ameren customers can expect an even larger increase. (Capitol News Illinois photo by Andrew Adams)
A set of electric meters in Chicago. Residential Commonwealth Edison customers will see an average $10.60 increase in monthly bills this summer. Ameren customers can expect an even larger increase. (Capitol News Illinois photo by Andrew Adams)

Ameren Illinois Natural Gas Customers to See Increased Bill Starting in January

By Greg Halbleib Dec 1, 2025 | 5:08 AM

Ameren Illinois residential customers will see an average $3.65 increase on their natural gas bills in January after the Illinois Commerce Commission last week slashed proposed rate hikes for two of the state’s largest utilities.

Ameren, which serves approximately 816,000 customers in central and southern Illinois, initially held off on estimating the impact to customers until it could conduct an in-depth review of the ICC’s order.