St. Louis County, MO Power Outages
Utilities serving St. Louis County, Missouri don't yet share live outage data with DOE's ODIN feed. Check your electric company's outage map (listed below) for real-time status.
St. Louis County on the Missouri outage map
- Normal
- Minor
- Moderate
- Major
- Severe
- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
St. Louis County power outage history
Every significant outage recorded in St. Louis County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 42 significant power outages in St. Louis County, meaning events that left at least 1% of customers in the dark. The largest (Mar 14–20, 2025) came when severe thunderstorms left 83,830 customers (14.1% of the county) without power.
From 2018 to 2025, the average customer here lost about 3 hr 6 min of power per year, less than the Missouri average of 4 hr 34 min. That ranks 87th of 115 Missouri counties for outage time, where 1st has the most.
March is the riskiest month: it accounted for 28% of all customer outage time from 2018 to 2025. On 6 days in that period, at least 5% of customers were out at the same time. Outage time in St. Louis County has risen recently: about 9 hr 5 min per customer per year in 2022–2025, versus 1 hr 36 min in 2018–2021.
The most recent significant outage on record (Jul 26, 2025) affected 7,786 customers (1.3%) amid extreme heat.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Mar 14–20, 2025 | 83,830(14.1%) | 7 | Severe thunderstorms |
| 2 | Jul 13–16, 2016 | 67,070(11.3%) | 4 | Severe thunderstorms |
| 3 | May 16–20, 2025 | 47,245(7.9%) | 5 | Hail and lightning |
| 4 | May 11–12, 2016 | 36,146(6.1%) | 2 | Severe thunderstorms |
| 5 | Jun 28–30, 2018 | 32,214(5.4%) | 3 | Severe thunderstorms |
Hours without power per customer, by year
When outages happen
Source: DOE/ORNL EAGLE-I recorded electricity outages, 2014–2025 (CC BY 4.0), with likely causes from the NOAA NCEI Storm Events Database. EAGLE-I coverage was partial before 2018, so averages use 2018–2025. Peak counts are the highest number of customers out at one time.
Who provides electricity in St. Louis County?
Electric companies with service territory in St. Louis County (EIA-861, 2025)
| Utility | Type | Customers (MO) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Ameren Missouri | Investor Owned | 1,284,472 | Not reporting |
Customer counts are each utility's statewide total in Missouri. Source: U.S. Energy Information Administration, Form EIA-861 & Electric Power Annual.
Local outage news
No St. Louis County outage headlines in the past week.
Cities in St. Louis County
Florissant, Chesterfield, Wildwood, University, Ballwin, Kirkwood, Maryland Heights, Hazelwood, Webster Groves, Creve Coeur
Nearby counties
St. Louis County power outage FAQ
Is the power out in St. Louis County right now?
No outages are currently reported for St. Louis County by participating utilities. Live coverage is limited here, so If your power is out, report it to your electric company.
Which electric company serves St. Louis County?
According to EIA-861 service territory data, Union Electric Co - (MO) provide electric service in St. Louis County, Missouri.
What was the worst power outage in St. Louis County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Mar 14–20, 2025. It peaked at 83,830 customers without power (14.1% of the county). NOAA storm reports for that period point to severe thunderstorms.
How often does the power go out in St. Louis County?
EAGLE-I has recorded 42 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 3 hr 6 min of power per year, and on 6 days at least 5% of customers were out at once.
Cite this page
You may reuse our derived data under CC BY 4.0 with attribution. Underlying government data is public domain.
PowerOutageTracker.com. "St. Louis County, MO Power Outages." Accessed November 3, 2026. https://poweroutagetracker.com/outages/missouri/st-louis-county