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For more information about our award-winning energy efficiency programs, please contact us via phone or email.

Contact Us

Residential Questions

Phone: 1.866.838.6918

Email: IllinoisResidentialEE@ameren.com

Business Questions

Phone: 1.866.800.0747

Email: IllinoisBusinessEE@ameren.com

Multifamily Questions

Phone: 1.866.838.6918

Email: IllinoisResidentialEE@ameren.com

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