Website
Industry
Utilities
Size
5001-10000
Location
St. Louis, Missouri, United States
Founded
1902
Social

About Ameren

Ameren Corporation is a St. Louis-based utility company founded in 1902. Through its operating companies, Ameren Illinois and Ameren Missouri, it provides electric and natural gas services across Illinois and Missouri.

Ameren Illinois offers electric distribution and transmission service along with natural gas distribution service. Ameren Missouri provides vertically integrated electric service, including generating capacity of more than 10,200 megawatts, as well as natural gas distribution service.

Combined, Ameren serves 2.4 million electric customers and more than 900,000 natural gas customers across a 64,000 square mile area. The company is the largest electric utility in Missouri and the second largest in Illinois, and it employs between 5,001 and 10,000 people.

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Insights

Updated 28 Aug 2026

Ameren operates in the large-cap utility space. Market observers are comparing it on earnings, risk, analyst recommendations, valuation, institutional ownership, dividends, and profitability, which points to a competitive profile built on traditional utility fundamentals rather than a single growth metric. A storm can change the picture fast. Local reporting also says the company has been guiding customers on safe portable generator use during outages as storms disrupt service in the Heartland.

Strategic planning seems centered on electricity demand and grid needs. Ameren said its Lincoln County battery project is “not about a data center,” but about the broader need for more electricity in Missouri and the U.S., and a separate federal report cited by local media says AI growth will require billions in new grid infrastructure, which keeps attention on utility investment in capacity and reliability. Demand is rising.

Investor and market signals look constructive. Legal & General Group Plc and OMERS Administration Corp both disclosed new Ameren stakes in second-quarter filings, and that suggests continued institutional interest, while repeated outage-related coverage and Ameren’s public safety messaging show the company is working in an environment where service reliability and customer communication remain important to sentiment.

Frequently asked questions

What is the address of Ameren?

Ameren is headquartered in St. Louis, Missouri, United States.

How many employees does Ameren have?

Ameren has 5001-10000 employees according to its company profile.

What is the valuation of Ameren?

Ameren operates in the Utilities sector. Public valuation figures are not always disclosed for private companies.