Ameren Illinois
Energy Efficiency Program
Helping Customers Reduce Costs Improve Comfort Manage Usage
Ameren Illinois
Energy Efficiency Program
Helping Customers Reduce Costs Improve Comfort Manage Usage
Residential
Whether you own or rent your home, explore ways to save money and improve the comfort of your home.
Business
No matter the size of your business, there are energy-saving opportunities to lower costs and improve comfort.
MDI
MDI (Market Development Initiative) Boosts community engagement, creates jobs, and lowers costs for those in need.
Program Allies
Program Allies (Contractors) can expand your business while helping customers receive energy-saving incentives.
Energy Savings Are Waiting — Check Your Eligibility
Our Residential Eligibility Tool is a quick and easy way to see which energy-saving offers and upgrades you qualify for, including:
Home Energy Assessments
Product Discounts and Rebates
Home Upgrades
And more!
Take the first step and find out how you can start saving energy and improving your home’s comfort and safety.
Helping You Become Energy-Efficient
Since 2008, the Ameren Illinois Energy Efficiency Program has been helping our state transition into a more affordable and cleaner future. We don’t just work in your community, we’re a part of it. We work with residents, businesses and partners across Illinois to save our customers money, lower carbon emissions and strengthen our state’s economy. We are committed to helping you improve comfort, manage usage and reduce costs.
2025 Year in Review
Our goal each year is to help you save energy and lower your costs, all while helping our state become a more energy-efficient place for us to live. Check out some of the 2025 successes by clicking through the infographic.
Products Installed
Customer Savings
Smart Thermostats
Workforce Development
Small Business
Energy Assessments
Over 6 Million
energy-efficient products were installed.
Since 2008
the Ameren Illinois Energy Efficiency Program has saved Business and Residential customers over $2.26 billion on electric costs and over $352 million on gas energy costs.
Over 17,536
smart thermostats were distributed to Ameren Illinois Business and Residential customers.
267
Workforce Development Opportunities provided to jobseekers.
2,974
Small Business energy efficiency projects completed.
20,700 Energy Assessments
income qualified customers were served through free home energy assessments and upgrades.