massoutage

2023 New Hampshire Power Outage Report

In 2023, the average New Hampshire customer went without power for about 9.5 hours — the 13th worst of any US state that year, 1.4× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
9.5
Peak customers out
29,343
Rank (worst state)
13th
Counties affected
10

New Hampshire outages over the decade

Average hours without power per customer, 2023 highlighted.

2.3h20153.2h201614.3h20175.8h20183.3h20197.1h20203.4h20218.6h20229.5h202314.2h20243.8h2025

Hardest-hit New Hampshire counties in 2023

By peak customers out during the year's worst event.

1Hillsborough County29,3432Rockingham County21,7743Strafford County20,7314Cheshire County19,2455Merrimack County12,5836Carroll County10,0477Sullivan County9,2628Grafton County6,0139Belknap County4,87710Coos County4,305

Biggest New Hampshire outages of 2023

CountyBeganPeak customers out
Hillsborough CountyMarch 14, 202329,343
Hillsborough CountyJanuary 23, 202322,819
Rockingham CountyJanuary 23, 202321,774
Strafford CountyJanuary 23, 202320,731
Strafford CountyMay 28, 202320,525
Cheshire CountyMarch 14, 202319,245
Rockingham CountyMarch 14, 202316,849
Rockingham CountyDecember 18, 202315,872
Hillsborough CountyJune 18, 202313,729
Merrimack CountyMarch 14, 202312,583
New Hampshire by year:20252024202220212020201920182017
Other states in 2023:MEMIKYOKARWV

Part of the 2023 US Power Outage Report. Source: DOE/ORNL EAGLE-I. “Avg hours per customer” is a SAIDI-like measure (outage customer-minutes ÷ tracked customers); coverage varies by year.