Which US Counties Lose Power Most Often?

Ranked by national percentile (lower = less reliable) across every graded US county in our dataset:

1. Clay County, West Virginia — 1,917 recorded events, 0th percentile nationally.

2. Lincoln County, West Virginia — 1,748 recorded events, 0th percentile nationally.

3. Cameron Parish, Louisiana — 607 recorded events, 0th percentile nationally.

4. Lafourche Parish, Louisiana — 1,054 recorded events, 0th percentile nationally.

5. Mayagüez Municipio, Puerto Rico — 3,308 recorded events, 0th percentile nationally.

6. Wayne County, West Virginia — 1,856 recorded events, 0th percentile nationally.

7. St. Helena Parish, Louisiana — 2,468 recorded events, 0th percentile nationally.

8. St. John the Baptist Parish, Louisiana — 846 recorded events, 0th percentile nationally.

9. Wilkinson County, Mississippi — 1,435 recorded events, 0th percentile nationally.

10. Arecibo Municipio, Puerto Rico — 3,516 recorded events, 0th percentile nationally.

These rankings reflect 12 years of recorded outage frequency, duration, and customers affected — not a single storm. See our methodology page for how the reliability grade and percentile are computed.