Electricity rates in Herculaneum, MO
Herculaneum (3,935 people, Jefferson County) is served by Union Electric Co.. Homes on Union Electric Co. pay about 14.03¢/kWh, 1% more than the Missouri average.
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Electric companies serving Herculaneum
| Utility | Type | Rate | Avg bill | Homes (statewide) | Outage min |
|---|---|---|---|---|---|
| Union Electric Co. | Investor-owned utility | 14.03¢ | $145 | 1.10M | 594 |
Power outages in Jefferson County right now
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Outage history in Jefferson County
| 2024 | 2025 | |
|---|---|---|
| Outage minutes per customer | 190 | 926 |
| Days with outages | 52 | 66 |
| Most customers out at once | 7,453 (6.9%) | 29,155 (26.9%) |
| Worst day | 2024-04-18 | 2025-03-15 |
Outage minutes by month, 2025
More outage time than 2024 (190 min). Data: ORNL EAGLE-I county outage snapshots every 15 minutes, covering all utilities in the county.
Nearby cities
- Pevely 14.0¢
- Crystal City 14.0¢
- Festus 14.0¢
- Barnhart 14.0¢
- Imperial 14.0¢
- Hillsboro 14.0¢
- Arnold 14.0¢
- De Soto 14.0¢
- Oakville 14.0¢
- Cedar Hill 14.0¢
ZIP codes: 63048
Frequently asked questions
What is the electricity rate in Herculaneum?
Most homes in Herculaneum 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¢.
What is the average electric bill in Herculaneum?
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 Herculaneum, MO?
Union Electric Co. serves Herculaneum.
How often does the power go out in Herculaneum?
In 2025, customers in Jefferson County averaged 15 hr 26 min without power. Outages hit 66 days of the year, and the worst day was 2025-03-15, when 29,155 customers (26.9%) were out. Source: ORNL EAGLE-I.