PowerOutageHistory
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Kendall County Power Outage History

2014–2025 · Illinois

Top 20% most reliable nationally — infrequent, short outages. How grades are calculated

Total events
335
Avg duration
2.1 hrs
Longest outage
43 hrs
National percentile
93rd

Outages by year

Outages by month (seasonality)

Worst outage events on record

DateDurationCustomers affectedCause
Jan 10, 20182 hrs21,067 (23%)Unnamed event
Mar 28, 20193 hrs16,524 (18%)Unnamed event
Aug 10, 202012 hrs7,530 (8%)Thunderstorm Wind
Mar 7, 201710 hrs5,171 (6%)Thunderstorm Wind
Nov 26, 20189 hrs5,055 (5%)Unnamed event

Over the 12 years from 2014 to 2025, Kendall County recorded 335 distinct power outage events, averaging 2.1 hours per event.

The single worst outage on record in Kendall County started January 10, 2018, lasting 2 hours and leaving up to 21,067 customers without power (23% of the county) at its peak.

July has historically been the worst month for outages in Kendall County, with 43 events recorded during that month across the dataset.

Based on this history, Kendall County earns a Reliability Grade of A, placing it in the 93rd percentile nationally for grid reliability (higher percentile = more reliable).

Sized for Kendall County's outage profile

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Similar counties in Illinois

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

CountyGradeNational percentile
Cass CountyA92nd
Massac CountyA94th
Lake CountyA92nd
Clay CountyA91st
Edwards CountyA91st

FAQ

How often does power go out in Kendall County?

Between 2014 and 2025, Kendall County recorded 335 outage events, averaging 2.1 hours each.

What is Kendall County's reliability grade?

Kendall County has a Reliability Grade of A, in the 93rd national percentile.

What was the worst power outage in Kendall County?

The worst outage on record started January 10, 2018, lasting 2 hours and affecting up to 21,067 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.