AEE

Ameren Corp is a regulated utility holding company that provides electricity generation, transmission, and distribution as well as natural‑gas delivery to customers in Missouri and Illinois. Its operations are organized into Ameren Missouri, which handles electric generation and gas distribution in Missouri, and Ameren Illinois, which focuses on electric and gas distribution and transmission in Illinois, plus a FERC‑regulated transmission subsidiary in the MISO region. The company serves roughly 2.5 million electric and 900,000 natural‑gas customers, making it the largest electric utility in Missouri and a major gas distributor in Illinois. Ameren’s business model relies on state‑approved rates and long‑term infrastructure investments, positioning it as a stable, rate‑base growth utility in the U.S. utility sector.