Ameren Illinois Supplier Rates

Written by Luke Daugherty/

Edited by Hannah Whatley

Last updated 09/05/2024

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Ameren Illinois Service Area

Ameren Illinois is a natural gas and electricity distributor that delivers energy across 43,700 square miles, or roughly three-quarters of Illinois. It provides natural gas to about 816,000 customers and electricity to roughly 1.2 million customers across the state. Based in Collinsville, Ameren Illinois maintains 12 natural gas storage facilities and 46,000 miles of electric distribution lines in Illinois.

Deregulation in Illinois allows you to choose whether you buy directly from Ameren or from another supplier. If you live in Ameren’s service area, you’ll automatically be assigned to Ameren if you don’t choose a supplier. Read on to learn how it works.

Energy Deregulation in Illinois

Unlike many states, residents of Illinois have the freedom to choose a retail electric supplier or retail gas supplier rather than buying only from their local utility. Illinois electric rates on supply vary, so this power to choose can help consumers pick the best plan for their budget.

It’s important to compare rates from your local utility with other options in your area. SaveOnEnergy can help you do this quickly and easily, all in one place. Enter your ZIP code to start comparing Ameren Illinois electric rates near you.

Energy efficiency incentives by Ameren

Ameren understands the economic and environmental impacts of saving energy. To encourage consumers to do the same, the utility offers incentives such as discounts on energy-efficient lighting and smart thermostats from participating retailers. The company also offers a variety of energy-saving tips and usage monitoring options for customers.

Ameren Illinois and your electric supplier

Regardless of which retail electric supplier you choose, Ameren Illinois will be your utility if you live within its service area. Ameren Illinois’ primary responsibility is electric and gas delivery and infrastructure maintenance. The duty of an electrical supplier, on the other hand, is to offer supply plans and manage your account. You’ll need to contact Ameren Illinois if you have any issues with your power or natural gas supply.

In Illinois, Ameren maintains its infrastructure, which includes 4,500 miles of electric transmission lines, 46,000 miles of distribution lines, 18,200 miles of natural gas transmission pipes, and 12 underground natural gas storage fields. It’s Ameren’s job to correct any issues with infrastructure and restore power as quickly as possible. 

Contact Ameren Illinois

Contact Ameren Illinois if you experience an outage in their service area. You can find important Ameren contact information here:

  • Area served: Central and southern Illinois
  • Residential customer service / Power outage and gas leak number: 1-800-755-5000
  • Business customer service: 1-800-232-2477
  • Online outage reporting: Visit Ameren’s outage center
  • News and safety: Read here
  • Community involvement: Read here
Ready to shop for an energy plan? Let’s get you taken care of. Call: 1 (855) 209-8145

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