Shelby CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Nov 16, 2016 | 2 hrs | 7,446 (40%) | Unnamed event |
| May 15, 2017 | 2 hrs | 5,396 (29%) | Unnamed event |
| Jan 19, 2019 | 3 hrs | 5,118 (28%) | Winter Weather |
| Aug 22, 2020 | 3 hrs | 5,105 (27%) | Unnamed event |
| Feb 15, 2016 | <1 hr | 5,049 (27%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Shelby County, Ohio that day.
Over the 12 years from 2014 to 2025, Shelby County recorded 524 distinct power outage events, averaging 2.1 hours per event.
The single worst outage on record in Shelby County started November 16, 2016, lasting 2 hours and leaving up to 7,446 customers without power (40% of the county) at its peak.
July has historically been the worst month for outages in Shelby County, with 62 events recorded during that month across the dataset.
Based on this history, Shelby County earns a Reliability Grade of B, placing it in the 66th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Ohio
Counties with the closest reliability grade and national percentile to Shelby County.
| County | Grade | National percentile |
|---|---|---|
| Greene County | B | 65th |
| Hancock County | B | 67th |
| Stark County | B | 67th |
| Mahoning County | B | 63rd |
| Hardin County | B | 68th |
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 Shelby County?
Between 2014 and 2025, Shelby County recorded 524 outage events, averaging 2.1 hours each.
What is Shelby County's reliability grade?
Shelby County has a Reliability Grade of B, in the 66th national percentile.
What was the worst power outage in Shelby County?
The worst outage on record started November 16, 2016, lasting 2 hours and affecting up to 7,446 customers.