Contact Ameren Illinois

To contact Ameren Illinois about energy efficiency programs, please call the numbers stated below or email.

Energy Efficiency Business Programs	1.866.800.0747	ActOnEnergyBusiness@ameren.com
Energy Efficiency Residential Program	1.866.838.6918	ActOnEnergyResidential@ameren.com
Energy Efficiency CFL Lighting Store	1.866.845.7085

If you would like to contact an Ameren Illinois representative for information on energy assistance; would like to contact the media; or have a general inquiry click on the links below:

Energy Assistance
Media Contacts
General Inquiries