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Our Businesses

Our Businesses

Ameren Illinois

Ameren Illinois is a regulated electric and gas delivery company based in Collinsville, Illinois. As a delivery company, Ameren Illinois is in the business of energy distribution. All customers can choose their electric supplier, and non-residential customers can choose their gas supplier.

Ameren Illinois Chevron

Ameren Missouri

Operates energy centers and provides electric and natural gas services in Missouri. Includes:

  • Ameren Missouri Energy Management & Trading - procures and transports fuel and manages renewable energy programs and emissions.
  • Ameren Missouri Wholesale (Ameren Missouri Asset Management & Trading) - offers wholesale power and other services.

Ameren Missouri Chevron

Ameren Services

Ameren Services provides administrative support and services - everything from accounting to information technology - to Ameren Corporation and its operating companies, subsidiaries and affiliates.  
Ameren Services employees monitor the operation and plan for construction of such facilities as distribution and transmission lines and include finance, tax and accounting professionals. The legal experts and strategic planners, plus those charged with ensuring environmental compliance and operational safety, are some of the support staffs found in Ameren Services.

Ameren Transmission

Ameren is strengthening the transmission system within Illinois and Missouri that our customers and our country rely on. This helps fuel the region’s economy by creating jobs and improving reliability. It enables the delivery of renewable energy to the Midwest and fosters economic growth through infrastructure investments.

Ameren Transmission Chevron
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