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Ameren Contacts : Media Anthony Paraino 314.554.2182 aparaino@ameren.com For Immediate Release ● Analysts Andrew Kirk 314.554.3942 akirk@ameren.com NEWS RELEASE 1901 Chouteau Avenue : St. Louis , MO 63103 : Ameren.com Ameren Announces Third Quarter 2021 Results Investors In estor Services 800.255.2237 invest@ameren.com Third Quarter Diluted Earnings Per Share were $ 1.65 in 2021 vs. $ 1.47 in 2020 2021 Diluted EPS Guidance Range Raised to $ 3.75 to $ 3.95 from $ 3.65 to $ 3.85 ST . LOUIS ( Nov. 3 , 2021 ) — Ameren Corporation ( NYSE : AEE ) today announced third quarter 2021 net income attributable to common shareholders of $ 425 million , or $ 1.65 per diluted share , compared to third quarter 2020 net income attributable to common shareholders of $ 367 million , or $ 1.47 per diluted share . Page 1 of 5 Third quarter 2021 results reflected earnings on increased infrastructure investments made across all business segments driven by strong execution of the company's strategy . Earnings were higher at Ameren Missouri due to a change in seasonal electric rate design effective in May 2021 as a result of the March 2020 rate order , which will not impact full - year results . Earnings were also positively impacted by higher Ameren Missouri electric retail sales driven by an economy that continues to recover from the impacts of COVID - 19 , as well as by warmer - than - normal summer temperatures in the third quarter of 2021 compared to near - normal summer temperatures in the year - ago period . In addition , earnings were positively impacted by a higher allowed return on equity at Ameren Illinois Electric Distribution due to a higher projected average 30 - year U.S. Treasury bond yield in 2021 compared to 2020. These factors were partially offset by the timing of income tax expense primarily at Ameren Parent , which is not expected to materially impact full - year results , an increase in operations and maintenance expenses at Ameren Missouri , and a change in rate design at Ameren Illinois Natural Gas , which is not expected to impact full - year results . Finally , 2021 earnings per share reflected higher weighted - average basic common shares outstanding . " We continue to execute on all elements of our strategy , including significant investments in energy infrastructure and disciplined cost management across all of our business segments . As a result of this strong execution , we raised our 2021 earnings per share guidance range to $ 3.75 to $ 3.95 from $ 3.65 to $ 3.85 , " said Warner L. Baxter , chairman , president and chief executive officer of Ameren Corporation . " Looking ahead , we remain focused on continuing to deliver significant long - term value to all stakeholders under all elements of our strong sustainability value proposition , which includes delivering safe , reliable and affordable electric and natural gas services to our customers and executing our plan to transition to a cleaner energy future in a responsible fashion . "