Robertson County Power Outage History
2014–2025 · Tennessee
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 |
|---|---|---|---|
| Mar 3, 2023 | 40 hrs | 9,442 (27%) | High Wind |
| Dec 9, 2023 | 3 hrs | 8,140 (23%) | Hail |
| Dec 11, 2021 | 2 hrs | 7,653 (21%) | Lightning |
| Mar 16, 2015 | 2 hrs | 7,594 (21%) | Unnamed event |
| May 17, 2025 | 7 hrs | 6,891 (19%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Robertson County recorded 776 distinct power outage events, averaging 1.8 hours per event.
The single worst outage on record in Robertson County started March 3, 2023 (High Wind), lasting 40 hours and leaving up to 9,442 customers without power (27% of the county) at its peak.
July has historically been the worst month for outages in Robertson County, with 116 events recorded during that month across the dataset.
Based on this history, Robertson County earns a Reliability Grade of C, placing it in the 53rd percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Robertson County.
| County | Grade | National percentile |
|---|---|---|
| Trousdale County | C | 52nd |
| Blount County | C | 52nd |
| Knox County | C | 52nd |
| Sullivan County | C | 55th |
| Cumberland County | C | 52nd |
FAQ
How often does power go out in Robertson County?
Between 2014 and 2025, Robertson County recorded 776 outage events, averaging 1.8 hours each.
What is Robertson County's reliability grade?
Robertson County has a Reliability Grade of C, in the 53rd national percentile.
What was the worst power outage in Robertson County?
The worst outage on record started March 3, 2023 (High Wind), lasting 40 hours and affecting up to 9,442 customers.