County annual report · FIPS 33017
2021 Strafford County, NH Power Outage Report
In 2021, customers in Strafford County, NH went without power for an average of 2.7 hours, a total of 239K customer-hours (New Hampshire average 3.4 hours). That ranks 8th worst of 10 New Hampshire counties and 1976th of 2,974 nationally.
Compared with NH, the US and 2020
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Strafford County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 30, 2021 20:15 | July 1, 2021 23:00 | 1d 2h | 7,769 | 18K |
| 2 | February 16, 2021 13:00 | February 17, 2021 07:00 | 18h | 5,792 | 16K |
| 3 | March 29, 2021 13:00 | March 31, 2021 03:30 | 1d 14h | 4,712 | 36K |
| 4 | March 2, 2021 04:00 | March 4, 2021 06:30 | 2d 2h | 4,375 | 79K |
| 5 | September 15, 2021 19:30 | September 16, 2021 01:00 | 5h 30m | 3,016 | 1,180 |
| 6 | August 21, 2021 05:15 | August 21, 2021 07:15 | 2h | 2,058 | 3,943 |
| 7 | October 27, 2021 01:45 | October 28, 2021 02:00 | 1d | 2,055 | 16K |
| 8 | March 13, 2021 05:30 | March 13, 2021 10:00 | 4h 30m | 1,625 | 1,469 |
| 9 | May 26, 2021 22:45 | May 27, 2021 07:30 | 8h 45m | 1,422 | 2,456 |
| 10 | May 23, 2021 20:15 | May 23, 2021 22:30 | 2h 15m | 1,301 | 619 |
Outage episodes by size in 2021: 87 reached 100+ customers, 14 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Strafford County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Public Service Co of NH | 2021 | 3.0 hrs | 1.07 | 1.6 hrs | 0.83 |
| New Hampshire Elec Coop Inc | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of New Hampshire's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 89,738 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Strafford County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Strafford County, NH annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/new-hampshire/strafford-county