Chesapeake County Power Outage History
2015–2025 · Virginia
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 4, 2020 | 60 hrs | 57,143 (53%) | Tropical Storm Isaias |
| Apr 13, 2020 | 35 hrs | 37,466 (35%) | High Wind |
| Oct 8, 2016 | 88 hrs | 37,135 (34%) | Heavy Rain |
| Jun 20, 2019 | 25 hrs | 29,920 (28%) | Thunderstorm Wind |
| Sep 6, 2019 | 21 hrs | 21,384 (20%) | Hurricane Dorian |
Over the 11 years from 2015 to 2025, Chesapeake County recorded 1,120 distinct power outage events, averaging 2.2 hours per event.
The single worst outage on record in Chesapeake County started August 4, 2020 (Tropical Storm Isaias), lasting 60 hours and leaving up to 57,143 customers without power (53% of the county) at its peak.
July has historically been the worst month for outages in Chesapeake County, with 149 events recorded during that month across the dataset.
Based on this history, Chesapeake County earns a Reliability Grade of C, placing it in the 48th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Chesapeake County's outage profile
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Similar counties in Virginia
Counties with the closest reliability grade and national percentile to Chesapeake County.
| County | Grade | National percentile |
|---|---|---|
| Portsmouth County | C | 48th |
| Hampton County | C | 47th |
| Augusta County | C | 47th |
| Orange County | C | 46th |
| King William County | C | 50th |
FAQ
How often does power go out in Chesapeake County?
Between 2015 and 2025, Chesapeake County recorded 1,120 outage events, averaging 2.2 hours each.
What is Chesapeake County's reliability grade?
Chesapeake County has a Reliability Grade of C, in the 48th national percentile.
What was the worst power outage in Chesapeake County?
The worst outage on record started August 4, 2020 (Tropical Storm Isaias), lasting 60 hours and affecting up to 57,143 customers.