Customer Support

Have a question? Need Help? Find it here.

Smell a gas odor? See downed power lines?

Call immediately: 800.755.5000

Residential Account

Phone: 800.755.5000 

Hours: M-F 7:00 a.m. - 7:00 p.m

Business Account

Phone: 800.232.2477
Fax: 877.263.7369

Hours: M-F 7:00 a.m. - 5:30 p.m.

Wanting to make a payment by phone?

To make a payment by phone, call Ameren Illinois' authorized payment vendor SpeedPay at 888.777.3108

Please note: Ameren's Call Center Agents are not authorized to take payments.


Online Account Options

Still Have Questions?

Correspondence Mailing Address
Ameren Illinois
300 Liberty
Peoria, IL 61602

Payment Mailing Address
Ameren Illinois
PO Box 88034
Chicago, IL 60680-1034

Web Support
 Phone: 877.263.7361
Fax: 800.851.1791
Hours: 7:00 a.m. - 7:00 p.m. M-F

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