12 years of DOE outage data · 3,046 counties
How often does the power go out where you live?
3046 US counties, 2014–2025 of real outage data from the Dept. of Energy — with a reliability grade and the right-sized generator for your county's outage history.
Look up power outage history by county or ZIP code.
Reliability by state
Hover a state for its avg. reliability grade
Least reliable
Grade-F counties, worst outage history.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
| Lafourche Parish | Louisiana | F | 0th |
| Mayagüez Municipio | Puerto Rico | F | 0th |
Most reliable
Grade-A counties, best outage history.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
| Valdez-Cordova | Alaska | A | 99th |
| Brown County | Minnesota | A | 99th |
What the grades mean
Each county is ranked against every other graded county nationally by outage frequency, duration, and customers affected — grades are a national percentile, not a fixed pass/fail bar.
Top 20% most reliable nationally — infrequent, short outages.
Better than average — fewer or shorter outages than most counties.
Average — typical outage frequency and duration nationally.
Worse than average — more frequent or longer outages than most counties.
Bottom 20% least reliable nationally — frequent and/or long outages.
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