Jefferson County, IL Power Outages
Utilities serving Jefferson 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.
Jefferson County on the Illinois outage map
- Normal
- Minor
- Moderate
- Major
- Severe
- Limited data
Current outages
Weather alerts
No active outage-relevant weather alerts from the National Weather Service.
Jefferson County power outage history
Every significant outage recorded in Jefferson County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 256 significant power outages in Jefferson County, meaning events that left at least 1% of customers in the dark. The largest (Feb 16, 2021) came when Winter Storm Uri left 12,259 customers (54.1% of the county) without power.
From 2018 to 2025, the average customer here lost about 5 hr 38 min of power per year, more than the Illinois average of 2 hr 57 min. That ranks 35th of 102 Illinois counties for outage time, where 1st has the most.
June is the riskiest month: it accounted for 20% of all customer outage time from 2018 to 2025. On 79 days in that period, at least 5% of customers were out at the same time. Outage time in Jefferson County has fallen recently: about 3 hr 20 min per customer per year in 2022–2025, versus 7 hr 56 min in 2018–2021.
The most recent significant outage on record (Dec 29, 2025) affected 333 customers (1.5%) amid a winter storm.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Feb 16, 2021 | 12,259(54.1%) | 1 | Winter Storm Uri |
| 2 | Jul 5, 2021 | 6,853(30.2%) | 1 | No major storm reported |
| 3 | Feb 14, 2018 | 6,191(27.3%) | 1 | No major storm reported |
| 4 | Aug 20, 2018 | 6,056(26.7%) | 1 | Tornadoes |
| 5 | Jun 25–30, 2018 | 5,485(24.2%) | 6 | 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 Jefferson County?
Electric companies with service territory in Jefferson County (EIA-861, 2025)
| Utility | Type | Customers (IL) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Ameren Illinois | Investor Owned | 1,251,245 | Not reporting | |
| Tri-County Electric Coop, Inc (IL) | Cooperative | 16,715 | Not reporting | |
| Wayne-White Counties Elec Coop | Cooperative | 13,655 | 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 Jefferson County outage headlines in the past week.
Cities in Jefferson County
Mount Vernon
Nearby counties
Jefferson County power outage FAQ
Is the power out in Jefferson County right now?
No outages are currently reported for Jefferson 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 Jefferson County?
According to EIA-861 service territory data, Ameren Illinois Company, Tri-County Electric Coop, Inc (IL), Wayne-White Counties Elec Coop provide electric service in Jefferson County, Illinois.
What was the worst power outage in Jefferson County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Feb 16, 2021. It peaked at 12,259 customers without power (54.1% of the county). NOAA storm reports for that period point to winter storm uri.
How often does the power go out in Jefferson County?
EAGLE-I has recorded 256 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 5 hr 38 min of power per year, and on 79 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. "Jefferson County, IL Power Outages." Accessed November 2, 2026. https://poweroutagetracker.com/outages/illinois/jefferson-county