PowerOutageHistory

New Hampshire Power Outage History

10 counties tracked, 2014–2025. County-level reliability grades and outage frequency below.

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Counties tracked
10
Avg national percentile
24th
Higher = more reliable
Grade F counties
4

New Hampshire county map

Coos County: Grade D (click for details)Belknap County: Grade F (click for details)Carroll County: Grade F (click for details)Strafford County: Grade C (click for details)Sullivan County: Grade F (click for details)Rockingham County: Grade D (click for details)Hillsborough County: Grade D (click for details)Cheshire County: Grade F (click for details)Merrimack County: Grade D (click for details)Grafton County: Grade D (click for details)

Hover a county for its reliability grade

Reliability grade:ABCDF

County rankings (worst to best)

CountyGradeNational percentile
Belknap CountyF9th
Carroll CountyF11th
Sullivan CountyF16th
Cheshire CountyF18th
Grafton CountyD26th
Rockingham CountyD27th
Coos CountyD27th
Merrimack CountyD33rd
Hillsborough CountyD33rd
Strafford CountyC41st