King CountyPower Outage History
2018–2025 · Texas
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Nov 18, 2024 | 1 hrs | 98 (53%) | Unnamed event |
| Nov 9, 2024 | 2 hrs | 89 (48%) | Unnamed event |
| Aug 21, 2024 | 4 hrs | 41 (22%) | Thunderstorm Wind |
| Apr 27, 2024 | 1 hrs | 41 (22%) | Thunderstorm Wind |
| Jan 15, 2022 | 3 hrs | 33 (18%) | High Wind |
Over the 8 years from 2018 to 2025, King County recorded 80 distinct power outage events, averaging 2.1 hours per event.
The single worst outage on record in King County started November 18, 2024, lasting 1 hours and leaving up to 98 customers without power (53% of the county) at its peak.
April has historically been the worst month for outages in King County, with 13 events recorded during that month across the dataset.
Based on this history, King County earns a Reliability Grade of A, placing it in the 87th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for King County's outage profile
See more picks in our Best Small Power Stations (Under 1,000Wh) roundup.
Outage-prep kit
See our outage-prep guides or the Texas storm prep checklist.
No ads. No data selling. This site runs entirely on Amazon affiliate commissions — buying through our links costs you nothing extra and keeps it free for everyone.
Read our mission →Similar counties in Texas
Counties with the closest reliability grade and national percentile to King County.
| County | Grade | National percentile |
|---|---|---|
| Lamb County | A | 87th |
| Lubbock County | A | 88th |
| Motley County | A | 86th |
| Mills County | A | 86th |
| Lampasas County | A | 86th |
Most reliable counties in Texas
The top 3 counties in Texas by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Zavala County | A | 95th |
| Jasper County | A | 94th |
| Fayette County | A | 91st |
Least reliable counties in Texas
The bottom 3 counties in Texas by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Trinity County | F | 2nd |
| Orange County | F | 2nd |
| Marion County | F | 4th |
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 King County?
Between 2018 and 2025, King County recorded 80 outage events, averaging 2.1 hours each.
What is King County's reliability grade?
King County has a Reliability Grade of A, in the 87th national percentile.
What was the worst power outage in King County?
The worst outage on record started November 18, 2024, lasting 1 hours and affecting up to 98 customers.