massoutage

2017 New Hampshire Power Outage Report

In 2017, the average New Hampshire customer went without power for about 14.3 hours, the 4th worst of 51 states (US average 7.3 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer
14.3
vs prior year
▲ 350%
vs 2016
Customer-hours out
10.7M
Peak customers out
250,026
across the state at once
EAGLE-I coverage
n/a
of NH customers
Counties reporting
10

New Hampshire year over year

New Hampshire: average hours without power per customer by year2015: 2.3h; 2016: 3.2h; 2017: 14.3h; 2018: 5.8h, coverage 88%; 2019: 3.3h, coverage 99%; 2020: 7.1h, coverage 99%; 2021: 3.4h, coverage 99%; 2022: 8.6h, coverage 99%; 2023: 9.5h; 2024: 14.2h; 2025: 3.8h0510150%50%100%2.3h20153.2h201614.3h20175.8h20183.3h20197.1h20203.4h20218.6h20229.5h202314.2h20243.8h2025
Use the arrow keys to read values.
Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Month by month, 2017

Customer-hours without power across New Hampshire; October was the worst.

CSVJSON
New Hampshire customer-hours without power by month, 2017Jan 133K, Feb 80K, Mar 965K, Apr 166K, May 178K, Jun 116K, Jul 167K, Aug 126K, Sep 81K, Oct 6.7M, Nov 1.9M, Dec 76K02M4M6M8M133KJan80KFeb965KMar166KApr178KMay116KJun167KJul126KAug81KSep6.7MOct1.9MNov76KDec
Use the arrow keys to read values.

All 10 New Hampshire counties, 2017

Ranked by average hours without power per customer. Each county links to its annual report.

CSVJSON
#CountyHrs / customerCustomer-hoursCustomersPeak outEvents
1Belknap County34.81.1M32,43420,394485
2Carroll County21.8567K26,00913,028567
3Coos County21.1507K24,0388,259389
4Rockingham County20.33.1M154,04880,811878
5Grafton County12.2611K49,89511,415542
6Sullivan County11.9239K20,0795,733399
7Strafford County11.51.0M89,73829,633676
8Merrimack County11.21.3M115,89937,350802
9Hillsborough County9.51.9M196,40258,016966
10Cheshire County7.4268K36,0145,022620

Biggest New Hampshire outages of 2017

Up to 25 county outage episodes with the most customers out at once.

CSVJSON
#CountyStarted (UTC)Ended (UTC)DurationPeak outCustomer-hours
1Rockingham County, NHOctober 29, 2017 23:00November 5, 2017 04:006d 5h80,8112.2M
2Hillsborough County, NHOctober 30, 2017 00:15November 5, 2017 00:156d58,0161.5M
3Rockingham County, NHMarch 14, 2017 12:00March 16, 2017 10:301d 22h54,648541K
4Merrimack County, NHOctober 29, 2017 10:45November 4, 2017 21:456d 11h37,3501.0M
5Strafford County, NHOctober 29, 2017 21:45November 4, 2017 22:006d29,633910K
6Rockingham County, NHJuly 24, 2017 14:45July 24, 2017 15:451h29,33215K
7Belknap County, NHOctober 30, 2017 03:30November 5, 2017 01:455d 22h20,3941.0M
8Hillsborough County, NHMarch 2, 2017 09:00March 4, 2017 01:301d 16h15,02681K
9Rockingham County, NHApril 1, 2017 06:15April 1, 2017 18:1512h13,43745K
10Carroll County, NHOctober 30, 2017 04:00November 4, 2017 23:305d 19h13,028473K
11Rockingham County, NHMay 18, 2017 22:45May 20, 2017 00:151d 1h12,05841K
12Grafton County, NHOctober 30, 2017 01:30November 5, 2017 00:155d 22h11,415486K
13Carroll County, NHOctober 16, 2017 13:00October 16, 2017 19:456h 45m10,8736,940
14Rockingham County, NHJanuary 4, 2017 21:00January 5, 2017 00:453h 45m10,06811K
15Rockingham County, NHJanuary 24, 2017 07:15January 24, 2017 17:1510h9,29011K
16Rockingham County, NHMarch 2, 2017 10:45March 3, 2017 16:151d 5h9,01318K
17Rockingham County, NHNovember 5, 2017 05:00November 8, 2017 15:453d 10h8,6874,134
18Hillsborough County, NHJuly 8, 2017 10:15July 10, 2017 02:001d 15h8,36737K
19Coos County, NHOctober 30, 2017 04:45November 4, 2017 23:155d 18h8,259441K
20Merrimack County, NHOctober 10, 2017 14:45October 10, 2017 18:454h7,3661,919
21Merrimack County, NHMarch 2, 2017 11:00March 3, 2017 11:451d7,00732K
22Merrimack County, NHApril 1, 2017 03:00April 1, 2017 18:1515h 15m6,86116K
23Hillsborough County, NHSeptember 25, 2017 11:15September 26, 2017 02:3015h 15m6,7812,373
24Merrimack County, NHOctober 24, 2017 20:45October 25, 2017 11:1514h 30m6,69617K
25Merrimack County, NHJune 2, 2017 22:00June 3, 2017 07:309h 30m6,5137,868
EAGLE-I tracked about n/a of New Hampshire's electricity customers in 2017; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
New Hampshire by year:2025202420232022202120202019201820162015
Other states in 2017:FLMEWVGARIVTNCLA

Part of the 2017 US Power Outage Report.

Data from DOE EAGLE-I, every source we read.