PowerOutageHistory
B

Will County Power Outage History

2014–2025 · Illinois

Better than average — fewer or shorter outages than most counties. How grades are calculated

Total events
1,855
Avg duration
2.0 hrs
Longest outage
94 hrs
National percentile
63rd

Outages by year

Outages by month (seasonality)

Worst outage events on record

DateDurationCustomers affectedCause
Aug 10, 202012 hrs98,024 (33%)Tornado
Aug 11, 202011 hrs78,547 (26%)Tornado
Aug 11, 202043 hrs68,678 (23%)Tornado
Jul 16, 202494 hrs62,498 (21%)Thunderstorm Wind
Mar 9, 20152 hrs22,598 (8%)Unnamed event

Over the 12 years from 2014 to 2025, Will County recorded 1,855 distinct power outage events, averaging 2.0 hours per event.

The single worst outage on record in Will County started August 10, 2020 (Tornado), lasting 12 hours and leaving up to 98,024 customers without power (33% of the county) at its peak.

June has historically been the worst month for outages in Will County, with 261 events recorded during that month across the dataset.

Based on this history, Will County earns a Reliability Grade of B, placing it in the 63rd percentile nationally for grid reliability (higher percentile = more reliable).

Sized for Will County's outage profile

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Similar counties in Illinois

Counties with the closest reliability grade and national percentile to Will County.

CountyGradeNational percentile
Scott CountyB63rd
Brown CountyB63rd
Morgan CountyB64th
Macon CountyB64th
Adams CountyB62nd

FAQ

How often does power go out in Will County?

Between 2014 and 2025, Will County recorded 1,855 outage events, averaging 2.0 hours each.

What is Will County's reliability grade?

Will County has a Reliability Grade of B, in the 63rd national percentile.

What was the worst power outage in Will County?

The worst outage on record started August 10, 2020 (Tornado), lasting 12 hours and affecting up to 98,024 customers.

Data: ORNL EAGLE-I Recorded Electricity Outages (2014–2025), CC BY 4.0. Storm names: NOAA Storm Events Database. Last data refresh: 2025. See methodology.