Jersey CountyPower Outage History
What this grade means
(How grades are calculated)Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
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Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jan 14, 2021 | 1 hrs | 4,578 (33%) | Unnamed event |
| Mar 5, 2025 | 4 hrs | 4,393 (32%) | Unnamed event |
| Mar 14, 2025 | 24 hrs | 2,824 (20%) | High Wind |
| Aug 3, 2022 | 8 hrs | 2,182 (16%) | Thunderstorm Wind |
| May 22, 2025 | <1 hr | 2,125 (15%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Jersey County, Illinois that day.
Over the 12 years from 2014 to 2025, Jersey County recorded 329 distinct power outage events, averaging 2.6 hours per event.
The single worst outage on record in Jersey County started January 14, 2021, lasting 1 hours and leaving up to 4,578 customers without power (33% of the county) at its peak.
July has historically been the worst month for outages in Jersey County, with 48 events recorded during that month across the dataset.
Based on this history, Jersey County earns a Reliability Grade of A, placing it in the 84th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Illinois
Counties with the closest reliability grade and national percentile to Jersey County.
| County | Grade | National percentile |
|---|---|---|
| Coles County | A | 84th |
| Menard County | A | 82nd |
| Greene County | A | 81st |
| McLean County | A | 81st |
| Richland County | A | 87th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Jersey County?
Between 2014 and 2025, Jersey County recorded 329 outage events, averaging 2.6 hours each.
What is Jersey County's reliability grade?
Jersey County has a Reliability Grade of A, in the 84th national percentile.
What was the worst power outage in Jersey County?
The worst outage on record started January 14, 2021, lasting 1 hours and affecting up to 4,578 customers.