We regret to announce that the Ameren Missouri Heating and Cooling Rebate Program will end on December 31, 2024. Starting next year, rebates will no longer
be available for the purchase and installation of air conditioners, air source heat
pumps, ground source heat pumps or smart thermostats through this program.

For over 11 years, the Heating and Cooling Program has helped make energy-efficient
HVAC upgrades more affordable, allowing Ameren Missouri customers to save energy
and money.

Ameren Missouri made a filing with the Missouri Public Service Commission to
continue the Heating and Cooling Rebate Program along with other residential energy
efficiency programs. However, during the proceeding, Ameren Missouri’s proposal to
continue the Heating and Cooling Program did not receive the level of support needed
to continue. As a result, a stipulation and agreement for Ameren Missouri’s energy
efficiency plan will be filed with the Missouri Public Service Commission, leading to the
end date of the Heating and Cooling Program in 2025.

We are extremely grateful to you, our contractors and distributors. Your participation
has been essential in making the program a tremendous success, and this happening
is in no way an indication of your hard work, diligence and hugely positive impact for
more than a decade. We are immensely thankful for your partnership!

While we do not know if the program will return in the future, Ameren Missouri remains
committed to working with the Missouri Public Service Commission to offer energy
savings programs to Ameren Missouri customers. Customers who are interested in
current opportunities should visit AmerenMissouriSavings.com.

Important Deadlines

As we approach the end of the year and the end of this current program, please
remember to submit your applications in a timely manner and keep these deadlines
in mind:

• December 16, 2024 – Applications due for all installations completed through
  November 30, 2024.
• December 31, 2024 – Final day to submit 2024 applications.
• Any 2024 applications received after December 31, 2024, at 6:00 p.m. will
  NOT be processed.

If you have any questions, please contact your account manager.

The Ameren Missouri Heating and Cooling Program Team