County annual report · FIPS 33001
2021 Belknap County, NH Power Outage Report
In 2021, customers in Belknap County, NH went without power for an average of 8.2 hours, a total of 268K customer-hours (New Hampshire average 3.4 hours). That ranks 2nd worst of 10 New Hampshire counties and 915th 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 Belknap 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 | May 23, 2021 15:15 | May 24, 2021 00:45 | 9h 30m | 6,170 | 7,139 |
| 2 | August 21, 2021 05:15 | August 21, 2021 08:30 | 3h 15m | 5,702 | 11K |
| 3 | June 30, 2021 20:00 | July 2, 2021 01:45 | 1d 5h | 5,542 | 29K |
| 4 | March 2, 2021 03:00 | April 10, 2021 05:45 | 39d 2h | 5,136 | 129K |
| 5 | October 16, 2021 18:30 | October 16, 2021 20:15 | 1h 45m | 3,747 | 1,798 |
| 6 | September 17, 2021 17:15 | September 17, 2021 22:15 | 5h | 3,315 | 4,626 |
| 7 | August 12, 2021 18:15 | August 12, 2021 22:15 | 4h | 2,284 | 686 |
| 8 | April 10, 2021 06:30 | April 28, 2021 17:00 | 18d 10h | 2,050 | 7,181 |
| 9 | October 16, 2021 13:00 | October 16, 2021 15:15 | 2h 15m | 1,401 | 1,639 |
| 10 | October 27, 2021 01:45 | October 27, 2021 03:45 | 2h | 1,257 | 1,572 |
Outage episodes by size in 2021: 92 reached 100+ customers, 16 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 Belknap 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 | - | - | - | - | - |
| Town of Wolfeboro - (NH) | - | - | - | - | - |
| New Hampton Village Precinct | - | - | - | - | - |
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 ÷ 32,434 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. Belknap County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Belknap 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/belknap-county