New Hampshire Power Outage History
10 counties tracked, 2014–2025. County-level reliability grades and outage frequency below.
Counties tracked
10
Avg national percentile
24th
Higher = more reliable
Grade F counties
4
County rankings (worst to best)
| County | Grade | National percentile |
|---|---|---|
| Belknap County | F | 9th |
| Carroll County | F | 11th |
| Sullivan County | F | 16th |
| Cheshire County | F | 18th |
| Grafton County | D | 26th |
| Rockingham County | D | 27th |
| Coos County | D | 27th |
| Merrimack County | D | 33rd |
| Hillsborough County | D | 33rd |
| Strafford County | C | 41st |