Ameren Customer Service, Outages, Billing and Reviews

Ameren customer service supports electric and natural gas customers through Ameren Illinois and Ameren Missouri. Because each utility has different phone numbers, payment addresses, and business-service departments, customers should use the contact information for the state shown on their bill.

Ameren Illinois residential customers can call 1-800-755-5000. Ameren Missouri residential customers can call 1-800-552-7583. Regular residential representatives are available Monday through Friday from 7:00 a.m. to 7:00 p.m. Outages, downed power lines, and suspected gas leaks can be reported 24 hours a day.

Ameren Illinois and Ameren Missouri Customer Service

Ameren Corporation provides utility service through separate regulated subsidiaries. Ameren Illinois provides electric transmission and distribution and natural gas distribution in Illinois. Ameren Missouri provides electric generation, transmission and distribution as well as natural gas distribution in Missouri.

The state distinction matters because Illinois and Missouri accounts use different customer-service numbers, emergency numbers, business departments, phone-payment numbers, and mailing addresses. Check the company name on the bill before calling or mailing a payment.

Residential representatives for both utilities are normally available Monday through Friday from 7:00 a.m. to 7:00 p.m. The 24-hour availability applies to outages and safety emergencies, not every routine billing or account question.

Ameren Power Outage Reporting

Report an outage through the Ameren Outage Center or by calling:

• Ameren Illinois: 1-800-755-5000
• Ameren Missouri: 1-800-552-7583

The Outage Center can also be used to check restoration information and view the outage map. Ameren customers can register for alerts by texting REG to AMEREN or 263736. Registered customers can text OUT to report an outage or STAT to request the status associated with their service address. Message and data rates may apply.

Keep the account telephone number and contact information current so Ameren can associate an outage report with the correct property and deliver restoration updates.

Downed Power Lines and Electrical Emergencies

Do not approach damaged utility equipment, attempt to move a wire, drive across a downed line, or touch a vehicle, fence, tree, puddle, or other object that may be energized.

What to Do If You Smell Natural Gas

Do not turn lights or electrical devices on or off, use a telephone inside the affected building, open or close windows, start a vehicle nearby, or do anything else that could create a spark. Do not return until emergency personnel or the utility says it is safe.

How to Pay an Ameren Bill

Ameren customers can pay through an online account, use guest payment options when available, pay through their bank, mail a payment, visit an authorized payment location, or use Ameren’s authorized telephone-payment vendor.

• Ameren Illinois Speedpay: 1-888-777-3108
• Ameren Missouri Speedpay: 1-866-268-3729

Ameren says phone payments can be made by electronic check or eligible credit or debit card without a telephone-payment fee. Payment methods, transaction limits, and processing rules may change, so confirm the current terms when making the payment.

Ameren Illinois Payment Address

Ameren Missouri Payment Address

Include the requested payment information and verify the address on the latest bill before mailing. The Ameren Missouri general-correspondence address is different from its payment address.

Ameren Payment Assistance and Disconnection Concerns

If you cannot pay the entire balance or have received a disconnection notice, contact Ameren before the stated deadline. Ask about payment arrangements, due-date options, budget billing, energy-assistance programs, and any plans currently available for the account.

Have the account number, current balance, shutoff date, household information, income documentation, and any available energy-assistance application information ready. Program eligibility and available arrangements may depend on the customer’s state, account status, household circumstances, and funding.

Do not pay someone who calls unexpectedly and threatens immediate disconnection. End the call and verify the account through Ameren.com or the correct Illinois or Missouri customer-service number.

Starting, Stopping or Moving Ameren Service

Customers can request service changes through Ameren’s Start, Stop or Move Service page. Ameren may request the account holder’s name, full service address, Social Security number, and requested service date.

Existing customers moving within Ameren territory may be able to stop service at the old address and start it at the new address in the same request. Save the confirmation and verify the final meter reading, service termination date, new service date, deposit treatment, and final bill.

Ameren Business and Construction Support

Commercial customers should use the business number for their state:

• Ameren Illinois Commercial: 1-800-232-2477, Monday–Friday, 7:00 a.m.–5:30 p.m.
• Ameren Missouri Commercial: 1-877-426-3736, Monday–Friday, 7:00 a.m.–5:30 p.m.

For new service, relocations, upgrades, meter work, construction coordination, or engineering questions, use:

• Ameren Illinois Construction and Engineering: 1-888-659-4540, Monday–Friday, 8:00 a.m.–4:00 p.m.
• Ameren Missouri Construction and Engineering: 1-866-992-6619, Monday–Friday, 6:30 a.m.–5:00 p.m.

Call 811 before beginning any project involving excavation, trenching, grading, posts, fencing, landscaping, or other digging.

High Bills, Meter Questions and Billing Complaints

For an unexpectedly high bill, compare the current and previous usage, billing-period length, meter-reading status, seasonal temperatures, rate plan, fuel or supply charges, payment history, and account credits.

Call the appropriate state customer-service number and ask the representative to explain each disputed charge. If a meter reading or service issue is involved, request the appropriate investigation and keep the case number.

Before escalating, gather:

• Recent Ameren bills and payment confirmations
• Meter readings or photographs, when safely obtainable
• Dates and amounts of disputed charges
• Outage, service, or construction dates
• Names of representatives and case numbers
• Copies of notices, emails, or assistance applications
• A concise description of the requested resolution

How to Escalate an Ameren Complaint

1. Contact the correct utility: Use Ameren Illinois at 1-800-755-5000 or Ameren Missouri at 1-800-552-7583.
2. Request a supervisor or complaint case: Ask for a case number and a clear explanation of the next step.
3. Document the issue: Keep bills, payments, notices, photographs, outage records, and the dates of every contact.
4. Send written correspondence if appropriate: Use the correct state correspondence address and keep a copy.
5. Contact the state utility regulator: Use the applicable state commission after attempting to resolve the complaint with Ameren.

Ameren Illinois Regulatory Complaints

The Illinois Commerce Commission’s Consumer Services Division handles utility-service complaints after the customer has attempted to resolve the concern with the utility. Call 1-800-524-0795 or use the Illinois Commerce Commission contact page.

Ameren Missouri Regulatory Complaints

The Missouri Public Service Commission’s Utility Consumer Hotline is 1-800-392-4211. Customers can also review the Missouri PSC complaint process.

Do not use a public review or social media post to report an active outage, gas odor, downed line, immediate shutoff emergency, or other dangerous condition.

Ameren Scam and Impostor Warning

Ameren Customer Service Reviews and Complaints

At the time of this update, the CSN listing contains one one-star review from July 2014. The review describes concern about nails and debris allegedly left in an alley by a contractor working for Ameren. One older review is not enough to establish a broader pattern involving Ameren billing, outages, or customer service.

Customers can use the review form below to describe a genuine Ameren Illinois or Ameren Missouri experience. Helpful reviews identify the state, issue type, support route used, and whether the complaint was resolved.

Do not publish an Ameren account number, service address, Social Security number, phone number, payment information, meter identifier, access code, private document, employee personal information, or photographs containing private account details.

Related Utility Customer Service Pages

• Evergy Customer Service
• ComEd Customer Service
• CenterPoint Energy Customer Service

Frequently Asked Questions About Ameren Customer Service

What is the Ameren Illinois customer service number?

Ameren Illinois residential customer service can be reached at 1-800-755-5000.

What is the Ameren Missouri customer service number?

Ameren Missouri residential customer service can be reached at 1-800-552-7583.

Is Ameren customer service available 24 hours?

Regular residential representatives are available Monday through Friday from 7:00 a.m. to 7:00 p.m. Outages, downed lines, gas odors, and utility emergencies can be reported 24 hours a day.

How do I report an Ameren power outage?

Use the official Outage Center, call 1-800-755-5000 in Illinois, or call 1-800-552-7583 in Missouri.

What number should I call if I smell gas?

Leave the area immediately, then call 1-800-755-5000 in Illinois or 1-800-552-7583 in Missouri.

How do I pay an Ameren bill by phone?

Ameren Illinois customers can call Speedpay at 1-888-777-3108. Ameren Missouri customers can call 1-866-268-3729.

Where do I mail an Ameren Illinois payment?

Mail Ameren Illinois payments to P.O. Box 88034, Chicago, IL 60680-1034.

Where do I mail an Ameren Missouri payment?

Mail Ameren Missouri payments to P.O. Box 88068, Chicago, IL 60680-1068.

How do I report an Ameren scam?

End the suspicious call and contact Ameren directly at 1-800-755-5000 in Illinois or 1-800-552-7583 in Missouri.

Customer Service Numbers Disclaimer

CustomerServiceNumbers.com is not affiliated with Ameren Corporation, Ameren Illinois, Ameren Missouri, Speedpay, the Illinois Commerce Commission, or the Missouri Public Service Commission. This page provides independently researched contact information and a public review section. Phone numbers, hours, payment addresses, programs, rates, and service procedures can change. Verify important information through Ameren.com or the contact information printed on the latest bill.