Electricity rates in Monmouth, IL
Monmouth (9,291 people, Warren County) is served by Ameren Illinois Company. Homes on Ameren Illinois Company pay about 17.28¢/kWh, 8% less than the Illinois average.
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Electric companies serving Monmouth
| Utility | Type | Rate | Avg bill | Homes (statewide) | Outage min |
|---|---|---|---|---|---|
| Ameren Illinois Company | Investor-owned utility | 17.28¢ | $153 | 588K | 287 |
Power outages in Warren County right now
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Outage history in Warren County
| 2024 | 2025 | |
|---|---|---|
| Outage minutes per customer | 368 | 210 |
| Days with outages | 35 | 36 |
| Most customers out at once | 1,507 (18.3%) | 1,890 (22.9%) |
| Worst day | 2024-07-16 | 2025-07-23 |
Outage minutes by month, 2025
Less outage time than 2024 (368 min). Data: ORNL EAGLE-I county outage snapshots every 15 minutes, covering all utilities in the county.
Nearby cities
ZIP codes: 61462
Frequently asked questions
What is the electricity rate in Monmouth?
Most homes in Monmouth get power from Ameren Illinois Company, where residential customers pay an average of 17.28¢/kWh including all charges. The Illinois average is 18.79¢ and the U.S. average 17.99¢.
What is the average electric bill in Monmouth?
About $153 a month, based on 888 kWh a month (the average for Ameren Illinois Company customers) at 17.28¢/kWh. Homes with electric heat, pools or EVs pay more.
Who is the electric company in Monmouth, IL?
Ameren Illinois Company serves Monmouth.
How often does the power go out in Monmouth?
In 2025, customers in Warren County averaged 3 hr 30 min without power. Outages hit 36 days of the year, and the worst day was 2025-07-23, when 1,890 customers (22.9%) were out. Source: ORNL EAGLE-I.