Ameren

Ameren Corporation is based in St. Louis and serves people throughout Illinois and Missouri.

Utilities

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Headquarters: St. Louis, Missouri, United StatesSource: RevenueBaseRetrieved October 13, 2026
Employee range: 5001 to 10000Source: RevenueBaseRetrieved October 13, 2026
Founded: 1902Source: RevenueBaseRetrieved October 13, 2026
Published list appearances: 5 supported appearances ↗Source: RevenueBase lists

The company at a glance

What does Ameren do?

Ameren Illinois provides electric distribution and transmission services and natural gas distribution service. Ameren Missouri provides vertically integrated electric service and natural gas distribution service.

Based on the company’s public LinkedIn information, supplied through RevenueBase.

Who it serves

Ameren serves millions of people throughout Illinois and Missouri.

What the business offers

Services & capabilities.

Electric and gas distribution

Ameren Illinois provides electric distribution and transmission service and natural gas distribution service.

Source: LinkedIn company description · Retrieved October 13, 2026

Electric and gas utility services

Ameren Missouri provides vertically integrated electric service, with generating capacity exceeding 10,200 megawatts, and natural gas distribution service.

Source: LinkedIn company description · Retrieved October 13, 2026

Explore the business in context

Snapshot: September 21, 2026

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Ameren

#10 Electric distribution utilities

Snapshot: September 14, 2026

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<a href="https://revenuebase.ai/companies/electric-distribution-utilities/united-states" target="_blank" rel="nofollow noopener">
  <img src="https://revenuebase.ai/companies/profiles/ameren/recognition-companies-electric-distribution-utilities-united-states-20260915-2670c732155d9df51f0b9840be4e95969cdbe2ff100d33e9cc43b42b0a6ecdb0.svg" alt="Ameren listed #10 on Electric distribution utilities, September 14, 2026" width="220" height="319" style="max-width:100%;height:auto;" />
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Sources & data notes.

RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 4, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 14, 2026, September 21, 2026 and October 11, 2026. How the company lists are built.

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