Transforming For Our Future

0.60 Delivering Strong Value to our Customers Achieving top quartile performance in reliability, affordability and customer satisfaction Improved Reliability1 Outage Frequency (per customer per year) 1.00 +12% ¢/KWh Better 15 Affordable Rates² JD Power Score Ameren Increased Customer Satisfaction3 +23% 0.80 0.89 0.78 10 0.40 0.20 0.00 2013 2021 First Quarter 2022 Earnings | May 6, 2022 LO 5 9.70 10.06 12.89 13.62 600 650 700 628 651 663 690 Better 750 723 731 734 766 773 0 550 Ameren Ameren Midwest US Missouri Illinois Average Average 1 As measured by the System Average Interruption Frequency Index (SAIFI). Represents the average of Ameren Missouri and Ameren Illinois. 2 Edison Electric Institute, "Typical Bills and Average Rates Report" for the 12 months ended June 30, 2021. 3 As measured by the J.D. Power Residential Electric Customer Satisfaction Index. Scores represent the average of the Ameren Missouri and Ameren Illinois scores at year-end within the Midwest Large Segment. 2013 2014 2015 2016 2017 2018 2019 2020 2021 28

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