Lower bills are on the way for Ameren Illinois electric customers. The change comes due to a decrease in the price of wholesale electricity which is purchased for Ameren Illinois customers through a competitive procurement.

Utility spokesman Marcelyn Love says the supply costs are passed along to customers on a dollar-for-dollar basis with no mark-up or profit.

The new lower rate, effective in October, is listed as the "Basic Generation Services" charge on energy bills. A typical residential customer who uses 10,000 killowatt-hours (kWh) of electricity per year will see an annual savings of about $22, according to Love.