If you need to talk to a live person in Ameren Illinois customer service you need to dial 1-800-755-5000. This number is available 24 hours a day. To quickly speak with an agent, you need to press 4 at the first prompt, then press 5 at the second prompt and stay on the line (typical waiting time is about 1-15 minutes).

Alternatively you can use the following other available options:

• To report an outage or receive estimated restoration information, report down pole, streetlight or any other power related problems say “power problems” or press 1.
• For billing and payment information say “billing and payment” or press 2.
• To start, stop or transfer service order for new construction service say “service” or press 3.
• For all other matters say “other matters” or press 4.
• To hear this options again say “repeat” or press 7.

If you press 4 in the above menu you will get the following sub-menu:

• For questions on supply choice say “supply choice” or press 1.
• To locate an assistant agency near you say “assistant agency” or press 2.
• If you are interested in improving your homes energy efficiency say “energy efficiency” or press 3.
• To stay informed about you accounts or text alerts say “alerts” or press 4.
• For anything else say “representative” or press 5.
• To hear this options again say “repeat” or press 7.

Ameren Illinois Customer Service Options

Ameren Illinois Customer Service Hours

Ameren Illinois live customer service agents are available 7am – 7am CST Monday -Friday.

Ameren Illinois Phone Customer Service

For Residential you need to dial 1-800-755-5000. Representatives are available Monday to Friday 7am to 7pm.

For Business you need to dial 1-800-232-2477. Representatives are available Monday to Friday 7am to 7pm.

For Construction & Engineering you need to dial 1-888-659-4540. Representatives are available Monday to Friday 7:30am to 4:30pm.

For Property Management you need to dial 1-800-487-5795. Representatives are available Monday to Friday 8am to 5pm.

For Website Support you need to dial 1-877-263-7361. Representatives are available Monday to Friday 7am to 7pm.

Ameren Illinois Social Networks Support

• You can message live customer service representative using Ameren Illinois Facebook page.
• You can also message live customer service representatives using Ameren Illinois Twitter.

Ameren Illinois Fax

• Residential (1-800-851-1796).
• Business (1-877-263-7369).
• Construction & Engineering (1-217-424-6758).
• Property Management (1-800-851-1796).
• Website Support (1-800-851-1796).

Ameren Illinois Customer Service Mailing Addresses

Ameren Illinois

PO Box 88034

Chicago, IL 60680-1034