Get customized results?

We’ll ask a few questions to find more savings.

Let's go No thanks

Ameren Illinois

Electric utility company in Illinois

For business

Key points:

  • Ameren Illinois is a utility company providing electricity service over 1.2 million Illinois customers.
  • Illinois has a deregulated energy market, meaning residents in Ameren’s service areas can choose to purchase electricity service from Ameren Illinois or other competing providers.
  • Ameren Illinois’ rates range from 9.374 and 11.833 cents per kWh.