Savings for Home Insulation Upgrades

Through the Ameren Illinois Energy Efficiency Program, eligible customers can get discounts on home insulation upgrades to decrease energy usage, improve home comfort and reduce energy costs.

The first step towards energy savings starts with a Home Energy Assessment. During the Assessment, a certified Program Ally Contractor will look for opportunities to reduce your energy usage. Energy-saving home upgrades may include improved insulation, air sealing or ventilation.

Once your assessment is complete, the Program Ally Contractor will provide you with the results. If your home qualifies, you may receive an energy efficiency project application that estimates project discounts and out-of-pocket costs.

When you and your Program Ally agree that a home efficiency project is right for you, the Program Ally will complete your home efficiency upgrade.

How to Get Started

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See if You Qualify

Complete the short form linked below to determine your eligibility.

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Find a Program Ally

Program Allies are contractors who are enrolled and trained to complete energy efficiency projects through the Ameren Illinois Energy Efficiency Program. When using the search tool, select the “Insulation, Air Sealing and Ventilation” option under the “Select a Contractor Type” heading.

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Schedule a Home Energy Assessment

Let the Program Ally know that you’re interested in receiving a Home Energy Assessment through the Ameren Illinois Energy Efficiency Program. Feel free to contact multiple Program Allies to quote your project. It is your decision on which price and Program Ally would work best for your energy efficiency upgrade project.

Upgrade
2026 Discount Rate
Description
Attic Insulation
$1.10/square foot
Increasing qualifying attic insulation to the optimal levels that maximize savings and minimize cost.
Wall Insulation
$1.10/square foot
Insulating empty exterior wall cavities
Rim Joist Insulation
$2.00/linear ft.
Reducing air leaks and insulating the exterior perimeter above the basement and crawl space walls
Crawl Space Wall Insulation
$3.00/linear ft.
Insulating exterior crawl space walls. May require ground vapor barrier.
Air Sealing
$0.70/cubic foot per minute (CFM) of air leakage reduced
Detecting and sealing air leaks using equipment specifically designed for this purpose. Projects require pre-approval prior to work commencement.
ASHRAE Exhaust Ventilation
$25.00/residence
ENERGY STAR® certified continuous exhaust fans satisfying ASHRAE 62.2-2016 ventilation requirements are energy-efficient and promote indoor air quality.
What if I live in a townhome or apartment?

If you are a renter living in an apartment or townhome, you can nominate your property for a FREE Energy Assessment. There are various energy-saving options you can do to make your living space more comfortable, all while saving each month on energy expenses.

:earn More and Nominate Your Property

Benefits of Working With a Program Ally Contractor

  • Estimate Your Project Costs — Estimate the scope, costs and incentives of your home efficiency upgrade project. Only registered Ameren Illinois Program Allies are able to offer incentives through the Ameren Illinois Energy Efficiency Program.
  • Trained and Accredited Professionals — Program Allies are Building Performance Institute certified and trained to look at all the systems of your home when providing recommendations for energy efficiency improvements.
  • Increased Savings Strategies — Program Allies work with you to identify savings on home upgrade project materials and equipment to help determine where your dollars would be best spent.
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ENERGY STAR Home Energy Yardstick

EPA’s Home Energy Yardstick (HEY) provides a simple assessment of your home’s annual energy use compared to similar homes. By answering a few basic questions about your home, you can get:

  • Your home’s ENERGY STAR score (on a scale of 1 to 100, with an average home scoring 50).
  • Insights into how much of your home’s energy use is related to heating and cooling versus other everyday uses like appliances, lighting, and hot water.
  • Links to guidance from ENERGY STAR on how to increase your home’s score, improve comfort and lower energy costs.
  • An estimate of your home’s annual carbon emissions.

Find a Program Ally Contractor

To find a Program Ally that offers discounts for home insulation upgrades, select the “Insulation, Air Sealing and Ventilation” option under the “Select a Contractor Type” heading.

Financing Options

Ameren Illinois offers additional payment assistance to help offset the cost of your upcoming home upgrade project.

Learn More About Insulation and Air Sealing

What is insulation and air sealing, and what are the benefits of upgrades?

Need Help?

Contact our Customer Care Team!

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Product Name Retailer Product Number Retail Price Final Cost After Rebate
Rheem Performance Platinum ProTerra 40 Gal 1010059454 $1,999.00 $1,199.00
Rheem Performance Platinum ProTerra 40 Gal with Leak Detection 1010059458 $2,119.00 $1,319.00
Rheem Performance Platinum ProTerra 50 Gal 1010059453 $2,099.00 $1,299.00
Rheem Performance Platinum ProTerra 50 Gal with Leak Detection 1010059457 $2,219.00 $1,419.00
Rheem Performance Platinum ProTerra 65 Gal 1010059452 $2,449.00 $1,649.00
Rheem Performance Platinum 40 Gal 1005205483 $1,599.00 $799.00
Rheem ProTerra 65 Gal with Leak Detection 1010059456 $2,619.00 $1,819.00
Rheem Performance Platinum ProTerra 80 Gal 1010059451 $2,799.00 $1,999.00
Rheem Performance Platinum ProTerra 80 Gal and Leak Detection 1010059455 $3,019.00 $2,219.00
Rheem Performance Platinum 40 Gal Hybrid 1011847916 $1,504.00 $704.00
Rheem Performance Platinum 40 Gal Hybrid with Leak Detection 1011847864 $1,719.00 $919.00
Rheem Performance Platinum 50 Gal Hybrid 1012120494 $1,869.00 $1,069.00
Rheem ProTerra 50 Gal Hybrid with Leak Detection 1011847851 $1,819.00 $1,019.00
Rheem Performance Platinum 65 Gal Hybrid 1011847889 $1,829.00 $1,029.00
Rheem ProTerra 65 Gal Hybrid with Leak Detection 1011847838 $1,889.00 $1,089.00
Rheem Performance Platinum 80 Gal Hybrid 1012120496 $2,479.00 $1,679.00
Rheem ProTerra 80 Gal Hybrid with Leak Detection 1011847825 $2,619.00 $1,819.00

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Product Name Retailer Product Number Retail Price Final Cost After Rebate
Google Nest Learning - Polished Gold 1011695219 $279.99 $154.99
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Nest Learning Thermostat Gen 4 PS 5991725 $279.99 $154.99
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Honeywell Home Silver 831392 $179.99 $54.99
Sensi Black 4865156 $209.99 $84.99
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Honeywell Home White 1290095 $209.99 $84.99
Honeywell Home X8S Black 7038072 $219.99 $94.99