Phelps County Power Outage History
2017–2025 · Missouri
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 14, 2025 | 100 hrs | 4,532 (13%) | High Wind |
| Sep 4, 2023 | 9 hrs | 3,425 (10%) | Thunderstorm Wind |
| Apr 2, 2024 | 14 hrs | 2,499 (7%) | Thunderstorm Wind |
| May 27, 2017 | 58 hrs | 2,195 (6%) | Hail |
| Jan 25, 2023 | 10 hrs | 1,898 (5%) | Winter Storm |
Over the 9 years from 2017 to 2025, Phelps County recorded 345 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Phelps County started March 14, 2025 (High Wind), lasting 100 hours and leaving up to 4,532 customers without power (13% of the county) at its peak.
May has historically been the worst month for outages in Phelps County, with 50 events recorded during that month across the dataset.
Based on this history, Phelps County earns a Reliability Grade of A, placing it in the 85th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Phelps County's outage profile
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Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Phelps County.
| County | Grade | National percentile |
|---|---|---|
| Monroe County | A | 85th |
| Caldwell County | A | 85th |
| Randolph County | A | 86th |
| Knox County | A | 84th |
| Morgan County | A | 84th |
FAQ
How often does power go out in Phelps County?
Between 2017 and 2025, Phelps County recorded 345 outage events, averaging 2.4 hours each.
What is Phelps County's reliability grade?
Phelps County has a Reliability Grade of A, in the 85th national percentile.
What was the worst power outage in Phelps County?
The worst outage on record started March 14, 2025 (High Wind), lasting 100 hours and affecting up to 4,532 customers.