Ameren Illinois

Ameren Corporation is a prominent energy company based in St. Louis, Missouri. Formed in 1997 through the merger of several utilities, it operates as a rate-regulated utility holding company. Ameren serves approximately 2.5 million electric customers and over 900,000 natural gas customers across a 64,000-square-mile area in Missouri and Illinois. The company employs around 9,000 people and is publicly traded on the New York Stock Exchange under the ticker symbol AEE.

Ameren's operations are divided into three main segments: Ameren Missouri, the largest electric provider in Missouri; Ameren Illinois, which offers electric and natural gas services in Illinois; and Merchant Generation, which has shifted focus to regulated utility operations. The company owns a diverse portfolio of power generation assets, including fossil fuel, nuclear, and hydroelectric facilities, and operates extensive natural gas transmission and distribution networks. Ameren is committed to reliability and infrastructure investment, ensuring efficient service delivery to its broad customer base.