Ameren Corporation

Ameren Corporation is a fully rate-regulated electric and natural gas utility holding company headquartered in St. Louis, Missouri. Its core business involves the generation, transmission, and distribution of electricity, as well as the distribution of natural gas. The company's mission is "To Power the Quality of Life" for its customers and communities.

Ameren serves approximately 2.5 million electric customers and over 900,000 natural gas customers across a 64,000-square-mile service territory in central and eastern Missouri and the southern four-fifths of Illinois. The company operates through its primary utility subsidiaries, Ameren Illinois and Ameren Missouri, and also includes Ameren Transmission Company of Illinois. Its services are focused on providing reliable, affordable, and sustainable energy solutions to residential, commercial, and industrial sectors.

Under the leadership of Chairman, President, and CEO Martin J. Lyons Jr., Ameren maintains a dominant market position as the largest electric utility in Missouri and a significant natural gas distributor in Illinois. The company has demonstrated strong financial performance, with its stock reaching an all-time high in May 2026. Ameren is actively investing in grid modernization and clean energy initiatives, with ambitious goals to achieve net-zero carbon emissions by 2045 or 2050. Recent news includes a 5.6% increase in its quarterly cash dividend in February 2026, marking 13 consecutive years of growth, and positive earnings guidance for 2026, partly driven by increasing electricity demand from data centers.