Moore CountyPower Outage History
2014–2025 · Tennessee
Worse than average — more frequent or longer outages than most counties. This county's recorded history shows more frequent outages and/or longer restoration times than most US counties over the same 12-year period. If you live here, it's worth taking backup power more seriously than an average household would.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 22, 2021 | 2 hrs | 3,194 (86%) | Unnamed event |
| Jul 1, 2023 | 14 hrs | 2,383 (64%) | Thunderstorm Wind |
| Feb 15, 2021 | 68 hrs | 1,941 (52%) | Winter Weather |
| May 3, 2020 | 20 hrs | 1,497 (40%) | Thunderstorm Wind |
| May 25, 2025 | 2 hrs | 1,489 (40%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Moore County recorded 454 distinct power outage events, averaging 2.1 hours per event.
The single worst outage on record in Moore County started July 22, 2021, lasting 2 hours and leaving up to 3,194 customers without power (86% of the county) at its peak.
May has historically been the worst month for outages in Moore County, with 63 events recorded during that month across the dataset.
Based on this history, Moore County earns a Reliability Grade of D, placing it in the 39th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Moore County's outage profile
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Read our mission →Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Moore County.
| County | Grade | National percentile |
|---|---|---|
| Chester County | C | 40th |
| Hawkins County | C | 41st |
| Grundy County | D | 37th |
| Hancock County | D | 36th |
| Fayette County | D | 36th |
Most reliable counties in Tennessee
The top 3 counties in Tennessee by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Lincoln County | A | 99th |
| Jackson County | A | 99th |
| Scott County | A | 98th |
Least reliable counties in Tennessee
The bottom 3 counties in Tennessee by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Shelby County | F | 8th |
| Sevier County | D | 20th |
| Stewart County | D | 21st |
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 Moore County?
Between 2014 and 2025, Moore County recorded 454 outage events, averaging 2.1 hours each.
What is Moore County's reliability grade?
Moore County has a Reliability Grade of D, in the 39th national percentile.
What was the worst power outage in Moore County?
The worst outage on record started July 22, 2021, lasting 2 hours and affecting up to 3,194 customers.