Caroline 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 |
|---|---|---|---|
| Apr 13, 2020 | 5 hrs | 5,791 (33%) | Thunderstorm Wind |
| Oct 12, 2016 | 1 hrs | 5,519 (31%) | Unnamed event |
| Nov 1, 2019 | 2 hrs | 5,105 (29%) | Thunderstorm Wind |
| Jun 19, 2017 | 6 hrs | 4,754 (27%) | Thunderstorm Wind |
| Aug 4, 2020 | 31 hrs | 4,051 (23%) | Tropical Storm Isaias |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Caroline County, Maryland that day.
Over the 11 years from 2015 to 2025, Caroline County recorded 480 distinct power outage events, averaging 1.5 hours per event.
The single worst outage on record in Caroline County started April 13, 2020 (Thunderstorm Wind), lasting 5 hours and leaving up to 5,791 customers without power (33% of the county) at its peak.
August has historically been the worst month for outages in Caroline County, with 68 events recorded during that month across the dataset.
Based on this history, Caroline County earns a Reliability Grade of B, placing it in the 79th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Maryland
Counties with the closest reliability grade and national percentile to Caroline County.
| County | Grade | National percentile |
|---|---|---|
| Queen Anne's County | B | 79th |
| Howard County | B | 78th |
| Charles County | A | 80th |
| St. Mary's County | A | 81st |
| Calvert County | B | 76th |
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 Caroline County?
Between 2015 and 2025, Caroline County recorded 480 outage events, averaging 1.5 hours each.
What is Caroline County's reliability grade?
Caroline County has a Reliability Grade of B, in the 79th national percentile.
What was the worst power outage in Caroline County?
The worst outage on record started April 13, 2020 (Thunderstorm Wind), lasting 5 hours and affecting up to 5,791 customers.