2018 New Hampshire Power Outage Report
In 2018, the average New Hampshire customer went without power for about 5.8 hours, the 13th worst of 51 states (US average 5.3 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.
Avg hrs / customer
5.8
vs prior year
▼ 60%
vs 2017
Customer-hours out
4.3M
Peak customers out
82,635
across the state at once
EAGLE-I coverage
88%
of NH customers
Counties reporting
10
New Hampshire year over year
All 10 New Hampshire counties, 2018
Ranked by average hours without power per customer. Each county links to its annual report.
| # | County | Hrs / customer | Customer-hours | Customers | Peak out | Events |
|---|---|---|---|---|---|---|
| 1 | Sullivan County | 18.1 | 363K | 20,079 | 7,999 | 543 |
| 2 | Carroll County | 12.4 | 324K | 26,009 | 14,308 | 955 |
| 3 | Cheshire County | 11.1 | 401K | 36,014 | 13,115 | 620 |
| 4 | Grafton County | 7.6 | 378K | 49,895 | 7,012 | 885 |
| 5 | Rockingham County | 6.0 | 930K | 154,048 | 30,706 | 839 |
| 6 | Coos County | 5.6 | 134K | 24,038 | 3,015 | 472 |
| 7 | Belknap County | 5.4 | 174K | 32,434 | 3,665 | 986 |
| 8 | Hillsborough County | 4.7 | 929K | 196,402 | 28,312 | 892 |
| 9 | Merrimack County | 3.4 | 398K | 115,899 | 9,908 | 740 |
| 10 | Strafford County | 2.8 | 253K | 89,738 | 11,409 | 735 |
Biggest New Hampshire outages of 2018
Up to 25 county outage episodes with the most customers out at once.
| # | County | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|---|
| 1 | Rockingham County, NH | June 18, 2018 21:30 | June 20, 2018 18:30 | 1d 21h | 30,706 | 142K |
| 2 | Rockingham County, NH | March 8, 2018 02:15 | March 12, 2018 03:15 | 4d 1h | 29,794 | 540K |
| 3 | Hillsborough County, NH | April 4, 2018 23:30 | April 6, 2018 20:15 | 1d 20h | 28,312 | 133K |
| 4 | Hillsborough County, NH | June 18, 2018 14:00 | June 20, 2018 20:15 | 2d 6h | 22,246 | 160K |
| 5 | Carroll County, NH | November 27, 2018 02:15 | November 30, 2018 01:45 | 2d 23h | 14,308 | 154K |
| 6 | Cheshire County, NH | June 18, 2018 18:30 | June 21, 2018 00:45 | 2d 6h | 13,115 | 145K |
| 7 | Hillsborough County, NH | March 28, 2018 19:45 | March 28, 2018 20:00 | 15m | 13,098 | 3,275 |
| 8 | Rockingham County, NH | May 5, 2018 00:00 | May 6, 2018 21:45 | 1d 21h | 11,429 | 33K |
| 9 | Strafford County, NH | June 18, 2018 20:45 | June 19, 2018 17:00 | 20h 15m | 11,409 | 28K |
| 10 | Hillsborough County, NH | May 5, 2018 01:45 | May 11, 2018 17:30 | 6d 15h | 11,162 | 69K |
| 11 | Merrimack County, NH | November 26, 2018 22:15 | November 30, 2018 22:45 | 4d | 9,908 | 137K |
| 12 | Hillsborough County, NH | March 8, 2018 01:45 | March 11, 2018 22:30 | 3d 20h | 9,491 | 278K |
| 13 | Sullivan County, NH | November 27, 2018 01:45 | December 1, 2018 17:00 | 4d 15h | 7,999 | 194K |
| 14 | Carroll County, NH | October 27, 2018 18:00 | October 28, 2018 07:45 | 13h 45m | 7,744 | 6,872 |
| 15 | Hillsborough County, NH | April 30, 2018 11:15 | April 30, 2018 12:00 | 45m | 7,525 | 1,882 |
| 16 | Grafton County, NH | April 16, 2018 05:15 | April 18, 2018 21:45 | 2d 16h | 7,012 | 50K |
| 17 | Cheshire County, NH | June 11, 2018 20:30 | June 11, 2018 23:30 | 3h | 6,648 | 7,815 |
| 18 | Strafford County, NH | August 2, 2018 20:00 | August 3, 2018 01:15 | 5h 15m | 6,556 | 8,198 |
| 19 | Rockingham County, NH | April 7, 2018 01:45 | April 7, 2018 03:00 | 1h 15m | 6,523 | 2,227 |
| 20 | Merrimack County, NH | May 4, 2018 21:45 | May 7, 2018 19:45 | 2d 22h | 6,195 | 88K |
| 21 | Strafford County, NH | May 30, 2018 11:00 | May 30, 2018 17:45 | 6h 45m | 6,128 | 3,222 |
| 22 | Grafton County, NH | November 13, 2018 12:00 | November 14, 2018 03:00 | 15h | 5,858 | 9,412 |
| 23 | Rockingham County, NH | April 4, 2018 23:15 | April 6, 2018 10:15 | 1d 11h | 5,719 | 47K |
| 24 | Strafford County, NH | November 3, 2018 18:45 | November 4, 2018 08:15 | 13h 30m | 5,681 | 17K |
| 25 | Hillsborough County, NH | June 9, 2018 18:00 | June 10, 2018 00:00 | 6h | 5,274 | 6,730 |
EAGLE-I tracked about 88% of New Hampshire's electricity customers in 2018; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
Part of the 2018 US Power Outage Report.
Data from DOE EAGLE-I, every source we read.