Norfolk CountyPower Outage History
What this grade means
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 30, 2019 | <1 hr | 49,521 (42%) | Unnamed event |
| Oct 8, 2016 | 91 hrs | 44,190 (38%) | Heavy Rain |
| Oct 12, 2018 | 57 hrs | 36,907 (32%) | High Wind |
| Aug 4, 2020 | 42 hrs | 33,904 (29%) | Tropical Storm Isaias |
| Apr 13, 2020 | 30 hrs | 23,567 (20%) | High Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Norfolk County, Virginia that day.
Over the 11 years from 2015 to 2025, Norfolk County recorded 1,118 distinct power outage events, averaging 2.1 hours per event.
The single worst outage on record in Norfolk County started July 30, 2019, lasting less than 1 hour and leaving up to 49,521 customers without power (42% of the county) at its peak.
July has historically been the worst month for outages in Norfolk County, with 149 events recorded during that month across the dataset.
Based on this history, Norfolk County earns a Reliability Grade of C, placing it in the 54th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Virginia
Counties with the closest reliability grade and national percentile to Norfolk County.
| County | Grade | National percentile |
|---|---|---|
| Williamsburg County | C | 54th |
| Spotsylvania County | C | 53rd |
| Hopewell County | C | 55th |
| Suffolk County | C | 52nd |
| Prince George County | C | 52nd |
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 Norfolk County?
Between 2015 and 2025, Norfolk County recorded 1,118 outage events, averaging 2.1 hours each.
What is Norfolk County's reliability grade?
Norfolk County has a Reliability Grade of C, in the 54th national percentile.
What was the worst power outage in Norfolk County?
The worst outage on record started July 30, 2019, lasting less than 1 hour and affecting up to 49,521 customers.