Williamson County, IL Power Outages
Utilities serving Williamson County, Illinois 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.
Williamson County on the Illinois outage map
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- Minor
- Moderate
- Major
- Severe
- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Williamson County power outage history
Every significant outage recorded in Williamson County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 171 significant power outages in Williamson County, meaning events that left at least 1% of customers in the dark. The largest (Jan 5–12, 2025) came when a winter storm left 10,894 customers (30.6% of the county) without power.
From 2018 to 2025, the average customer here lost about 4 hr 16 min of power per year, more than the Illinois average of 2 hr 57 min. That ranks 52nd of 102 Illinois counties for outage time, where 1st has the most.
January is the riskiest month: it accounted for 40% of all customer outage time from 2018 to 2025. On 35 days in that period, at least 5% of customers were out at the same time. Outage time in Williamson County has risen recently: about 5 hr 37 min per customer per year in 2022–2025, versus 2 hr 54 min in 2018–2021.
The most recent significant outage on record (Dec 30, 2025) affected 374 customers (1%) amid a winter storm.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Jan 5–12, 2025 | 10,894(30.6%) | 8 | Winter storm |
| 2 | May 27–28, 2024 | 8,670(24.3%) | 2 | Severe thunderstorms |
| 3 | Mar 24, 2019 | 7,719(21.7%) | 1 | Flooding |
| 4 | Jun 29–30, 2018 | 7,504(21.1%) | 2 | Tornadoes |
| 5 | Jul 10–11, 2021 | 6,630(18.6%) | 2 | 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 Williamson County?
Electric companies with service territory in Williamson County (EIA-861, 2025)
| Utility | Type | Customers (IL) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Ameren Illinois | Investor Owned | 1,251,245 | Not reporting | |
| Southeastern IL Elec Coop, Inc | Cooperative | 25,186 | Not reporting | |
| Egyptian Electric Coop Assn | Cooperative | 15,856 | Not reporting | |
| Southern Illinois Elec Coop | Cooperative | 11,216 | Not reporting |
Customer counts are each utility's statewide total in Illinois. Source: U.S. Energy Information Administration, Form EIA-861 & Electric Power Annual.
Local outage news
No Williamson County outage headlines in the past week.
Cities in Williamson County
Marion
Nearby counties
Williamson County power outage FAQ
Is the power out in Williamson County right now?
No outages are currently reported for Williamson 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 Williamson County?
According to EIA-861 service territory data, Ameren Illinois Company, Southeastern IL Elec Coop, Inc, Egyptian Electric Coop Assn, Southern Illinois Elec Coop provide electric service in Williamson County, Illinois.
What was the worst power outage in Williamson County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Jan 5–12, 2025. It peaked at 10,894 customers without power (30.6% of the county). NOAA storm reports for that period point to winter storm.
How often does the power go out in Williamson County?
EAGLE-I has recorded 171 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 4 hr 16 min of power per year, and on 35 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. "Williamson County, IL Power Outages." Accessed November 2, 2026. https://poweroutagetracker.com/outages/illinois/williamson-county