Electricity rates in Affton, MO
Affton (20,307 people, St. Louis County) is served by 2 electric utilities. Homes on Union Electric Co. pay about 14.03¢/kWh, 1% more than the Missouri average.
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Electric companies serving Affton
| Utility | Type | Rate | Avg bill | Homes (statewide) | Outage min |
|---|---|---|---|---|---|
| Union Electric Co. | Investor-owned utility | 14.03¢ | $145 | 1.10M | 594 |
| City of Kirkwood | Municipal utility | 14.99¢ | $134 | 9,522 | 177 |
Power outages in St. Louis County right now
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Outage history in St. Louis County
| 2024 | 2025 | |
|---|---|---|
| Outage minutes per customer | 0 | 546 |
| Days with outages | 0 | 33 |
| Most customers out at once | 0 (0%) | 83,830 (14.1%) |
| Worst day | 2024-01-20 | 2025-03-15 |
Outage minutes by month, 2025
More outage time than 2024 (0 min). Data: ORNL EAGLE-I county outage snapshots every 15 minutes, covering all utilities in the county.
Nearby cities
- Lakeshire 14.0¢
- Marlborough 14.0¢
- Saint George 14.0¢
- Green Park 14.0¢
- Concord 14.0¢
- Crestwood 14.0¢
- Sappington 14.0¢
- Shrewsbury 14.0¢
- Mehlville 14.0¢
- Lemay 14.0¢
ZIP codes: 63119, 63123, 63126
Frequently asked questions
What is the electricity rate in Affton?
Most homes in Affton get power from Union Electric Co., where residential customers pay an average of 14.03¢/kWh including all charges. The Missouri average is 13.95¢ and the U.S. average 17.99¢. Other utilities serving parts of Affton: City of Kirkwood (14.99¢).
What is the average electric bill in Affton?
About $145 a month, based on 1,032 kWh a month (the average for Union Electric Co. customers) at 14.03¢/kWh. Homes with electric heat, pools or EVs pay more.
Who is the electric company in Affton, MO?
2 utilities serve Affton's ZIP codes: Union Electric Co., City of Kirkwood. Which one serves you depends on your street address.
How often does the power go out in Affton?
In 2025, customers in St. Louis County averaged 9 hr 6 min without power. Outages hit 33 days of the year, and the worst day was 2025-03-15, when 83,830 customers (14.1%) were out. Source: ORNL EAGLE-I.