Benton County Power Outage History
2019–2025 · Washington
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 |
|---|---|---|---|
| Feb 21, 2023 | 4 hrs | 17,777 (19%) | High Wind |
| Jul 30, 2022 | 1 hrs | 11,998 (13%) | Excessive Heat |
| Aug 28, 2023 | 1 hrs | 10,813 (12%) | Unnamed event |
| May 13, 2023 | 6 hrs | 7,794 (9%) | Unnamed event |
| Feb 9, 2022 | 1 hrs | 7,616 (8%) | Unnamed event |
Over the 7 years from 2019 to 2025, Benton County recorded 181 distinct power outage events, averaging 2.3 hours per event.
The single worst outage on record in Benton County started February 21, 2023 (High Wind), lasting 4 hours and leaving up to 17,777 customers without power (19% of the county) at its peak.
May has historically been the worst month for outages in Benton County, with 21 events recorded during that month across the dataset.
Based on this history, Benton County earns a Reliability Grade of A, placing it in the 95th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Benton County's outage profile
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Similar counties in Washington
Counties with the closest reliability grade and national percentile to Benton County.
| County | Grade | National percentile |
|---|---|---|
| Okanogan County | A | 97th |
| Cowlitz County | A | 92nd |
| Franklin County | A | 98th |
| Grant County | A | 99th |
| Klickitat County | A | 99th |
FAQ
How often does power go out in Benton County?
Between 2019 and 2025, Benton County recorded 181 outage events, averaging 2.3 hours each.
What is Benton County's reliability grade?
Benton County has a Reliability Grade of A, in the 95th national percentile.
What was the worst power outage in Benton County?
The worst outage on record started February 21, 2023 (High Wind), lasting 4 hours and affecting up to 17,777 customers.