massoutage

2020 New Hampshire Power Outage Report

In 2020, the average New Hampshire customer went without power for about 7.1 hours — the 17th worst of any US state that year, 1.0× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
7.1
Peak customers out
18,919
Rank (worst state)
17th
Counties affected
10

New Hampshire outages over the decade

Average hours without power per customer, 2020 highlighted.

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

Hardest-hit New Hampshire counties in 2020

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

1Hillsborough County18,9192Rockingham County18,6133Carroll County13,7234Strafford County11,2795Grafton County11,2016Merrimack County10,5587Cheshire County9,4478Belknap County9,2549Coos County6,01910Sullivan County6,019

Biggest New Hampshire outages of 2020

CountyBeganPeak customers out
Hillsborough CountyMarch 23, 202018,919
Rockingham CountyDecember 5, 202018,613
Hillsborough CountyAugust 4, 202016,921
Rockingham CountyFebruary 7, 202016,571
Rockingham CountyMarch 24, 202015,809
Carroll CountyAugust 4, 202013,723
Strafford CountyAugust 4, 202011,279
Grafton CountyAugust 4, 202011,201
Hillsborough CountyDecember 5, 202010,864
Merrimack CountyAugust 4, 202010,558
New Hampshire by year:20252024202320222021201920182017
Other states in 2020:LAMEOKIAALNC

Part of the 2020 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.