Cass County, IL Power Outages
Utilities serving Cass 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.
Cass 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.
Cass County power outage history
Every significant outage recorded in Cass County since late 2014, with likely causes from NOAA storm reports
Since late 2014, DOE's EAGLE-I monitoring system has recorded 69 significant power outages in Cass County, meaning events that left at least 1% of customers in the dark. The largest (Apr 10, 2023) left 4,486 customers (73.7% of the county) without power. NOAA recorded no major storm in the area at the time.
From 2018 to 2025, the average customer here lost about 1 hr 17 min of power per year, less than the Illinois average of 2 hr 57 min. That ranks 98th 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 35 days in that period, at least 5% of customers were out at the same time. Outage time in Cass County has risen recently: about 1 hr 32 min per customer per year in 2022–2025, versus 1 hr 1 min in 2018–2021.
The most recent significant outage on record (Dec 18, 2025) affected 680 customers (11.2%) amid severe thunderstorms.
Worst outages on record
| # | When | Peak customers out | Days | Likely cause (NOAA) |
|---|---|---|---|---|
| 1 | Apr 10, 2023 | 4,486(73.7%) | 1 | No major storm reported |
| 2 | Nov 28, 2016 | 1,930(31.7%) | 1 | No major storm reported |
| 3 | Nov 1–2, 2024 | 1,919(31.5%) | 2 | High winds |
| 4 | Dec 1–2, 2018 | 1,631(26.8%) | 2 | Tornadoes |
| 5 | May 15, 2015 | 1,523(25%) | 1 | 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 Cass County?
Electric companies with service territory in Cass County (EIA-861, 2025)
| Utility | Type | Customers (IL) | Avg. outage time / yr | Live data |
|---|---|---|---|---|
| Ameren Illinois | Investor Owned | 1,251,245 | Not reporting | |
| Menard Electric Coop | Cooperative | 11,154 | Not reporting | |
| Illinois Rural Electric Coop | Cooperative | 10,313 | 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 Cass County outage headlines in the past week.
Nearby counties
Cass County power outage FAQ
Is the power out in Cass County right now?
No outages are currently reported for Cass 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 Cass County?
According to EIA-861 service territory data, Ameren Illinois Company, Menard Electric Coop, Illinois Rural Electric Coop provide electric service in Cass County, Illinois.
What was the worst power outage in Cass County?
The largest outage recorded by DOE's EAGLE-I system since 2014 was Apr 10, 2023. It peaked at 4,486 customers without power (73.7% of the county). NOAA storm reports for that period point to no major storm reported.
How often does the power go out in Cass County?
EAGLE-I has recorded 69 significant outages here since late 2014. From 2018 to 2025 the average customer lost about 1 hr 17 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. "Cass County, IL Power Outages." Accessed November 2, 2026. https://poweroutagetracker.com/outages/illinois/cass-county