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ST. LOUIS (April 16, 2026) – Spring is an ideal time to prepare for warmer temperatures and optimize energy use. Practical, easy-to-follow energy efficiency options can help residents stay comfortable while managing costs, whether by adjusting smart thermostat settings, improving home ventilation or preparing heating and cooling systems for the months ahead.

Spring Energy Efficiency Options for Missouri and Illinois Homes

As warmer weather arrives, Ameren customers can take advantage of opportunities that can help lower monthly bills. From simple seasonal tips to personalized tools and cost saving efficiency programs, customers have a menu of options to make smart energy choices at home:

• Utilize your smart thermostat – Schedule your smart thermostat to raise and lower the temperature in your home so you are not wasting energy while you are away. Stay comfortable and lower your energy usage.
• Switch your fans – If you changed the direction of your ceiling fans to go clockwise this winter, it’s time to switch them back. When your fans rotate counterclockwise, it creates a downward flow of air, so you feel cooler.
• Check your filters – Your air conditioner will operate best with strong air flow through the system, so replace your AC filter before you start cooling your home.
• Open your windows – Take advantage of cool spring nights by opening the windows at night to let the cool air in, then closing them during the day to keep the warm air out.

“Spring is the perfect time for customers to take small steps that lead to meaningful benefits over time,” said Pat Justis, director of energy efficiency for Ameren Illinois. “Whether they’re using our personalized tools to identify rebates and discounts or receiving home energy assessments, we’re committed to offering easy, affordable ways for families across Illinois and Missouri to improve comfort and reduce energy costs.”

Residential Eligibility Tool Offers Personalized Cost-Reduction Options

To help customers find offers tailored to their home type, location and income level, Ameren Illinois provides a quick and easy Residential Eligibility Tool while Ameren Missouri offers similar personalized resources for rebates, assessments and marketplace discounts.

HVAC Upgrades Made Affordable

The Ameren Missouri FastTrack HVAC PAYS Program makes heating and cooling upgrades affordable by spreading upfront costs over time; helping customers balance upfront costs with lasting savings and efficiency benefits.

“At Ameren, we’re focused on giving customers practical options to reduce energy use and make their homes more efficient year‑round,” said Tony Lozano, director of energy efficiency for Ameren Missouri. “Our programs and online tools are designed to meet customers where they are and help make energy upgrades more accessible.”

These online tools help customers discover eligible incentives including discounts, rebates, home energy assessments and marketplace deals on smart thermostats, advanced power strips, weatherization items and more. For more information, visit AmerenIllinois.com/Energy-Savings or AmerenMissouri.com/Energy-Savings.

Many incentives are available at little to no cost, helping families improve comfort and reduce monthly utility bills.

About Ameren Corporation
St. Louis-based Ameren Corporation powers the quality of life for 2.5 million electric customers and more than 900,000 natural gas customers in a 67,700-square-mile area through its Ameren Missouri and Ameren Illinois rate-regulated utility subsidiaries. Ameren Illinois provides electric transmission and distribution service and natural gas distribution service. Ameren Missouri provides electric generation, transmission and distribution services, as well as natural gas distribution service. Ameren Transmission Company of Illinois develops, owns and operates rate-regulated regional electric transmission projects in the Midcontinent Independent System Operator, Inc. For more information, visit Ameren.com, or follow us at @AmerenCorp, Facebook.com/AmerenCorp, or LinkedIn.com/company/Ameren.