ActOnEnergy provides Ameren customers with programs to help residents and businesses in Illinois and Missouri save on their energy usage. 

Ameren Illinois provides energy services to 1.2 million electric customers and more than 800,000 natural gas customers across the southern two-thirds of Illinois. We take pride in everything we do, whether that’s delivering the energy you count on every day or helping you learn how to use less and save more.

To learn more about the quality of our work, our people and our services, visit our website:


-Get the facts about the Ameren Illinois
-Explore reliability projects and initiatives
-Discover how we’re helping you save energy
-Find out about energy assistance, payment options and outages
-Learn how to stay safe around your energy systems
-See how we’re involved in our communities
-And more