County annual report · FIPS 33001
2025 Belknap County, NH Power Outage Report
In 2025, customers in Belknap County, NH went without power for an average of 10.5 hours, a total of 342K customer-hours (New Hampshire average 3.8 hours). That ranks 2nd worst of 10 New Hampshire counties and 764th of 3,000 nationally.
Compared with NH, the US and 2024
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Belknap County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 20, 2025 15:45 | March 15, 2025 13:45 | 22d 22h | 6,091 | 74K |
| 2 | September 29, 2025 15:00 | September 29, 2025 15:15 | 15m | 5,664 | 1,416 |
| 3 | July 16, 2025 13:15 | July 16, 2025 13:45 | 30m | 5,521 | 2,754 |
| 4 | December 29, 2025 08:15 | January 1, 2026 00:00 | 2d 15h | 5,234 | 39K |
| 5 | July 20, 2025 19:45 | July 22, 2025 05:15 | 1d 9h | 4,210 | 12K |
| 6 | June 24, 2025 19:15 | June 25, 2025 20:15 | 1d 1h | 3,541 | 20K |
| 7 | March 20, 2025 23:30 | April 7, 2025 02:45 | 17d 3h | 1,666 | 73K |
| 8 | June 20, 2025 12:15 | June 21, 2025 16:30 | 1d 4h | 1,581 | 8,246 |
| 9 | October 31, 2025 06:30 | November 2, 2025 22:00 | 2d 15h | 1,569 | 14K |
| 10 | December 19, 2025 18:45 | December 20, 2025 19:15 | 1d | 1,435 | 2,626 |
Outage episodes by size in 2025: 71 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 Belknap County reported on EIA Form 861 for 2025, 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 | 2024 | 13.1 hrs | 1.60 | 82 min | 0.74 |
| 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 n/a of New Hampshire's customers in 2025; 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, 2025, 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/2025/new-hampshire/belknap-county