County annual report · FIPS 33009
2025 Grafton County, NH Power Outage Report
In 2025, customers in Grafton County, NH went without power for an average of 6.0 hours, a total of 298K customer-hours (New Hampshire average 3.8 hours). That ranks 4th worst of 10 New Hampshire counties and 1286th 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 Grafton 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 | June 19, 2025 20:00 | June 21, 2025 04:30 | 1d 8h | 6,234 | 16K |
| 2 | April 26, 2025 17:00 | April 30, 2025 18:15 | 4d 1h | 6,094 | 22K |
| 3 | January 19, 2025 01:15 | January 19, 2025 06:15 | 5h | 5,836 | 4,406 |
| 4 | December 29, 2025 05:15 | December 31, 2025 20:45 | 2d 15h | 4,880 | 40K |
| 5 | March 7, 2025 10:15 | March 8, 2025 15:45 | 1d 5h | 4,709 | 13K |
| 6 | July 1, 2025 15:00 | July 1, 2025 15:30 | 30m | 4,395 | 2,198 |
| 7 | July 2, 2025 15:30 | July 2, 2025 15:45 | 15m | 4,394 | 1,099 |
| 8 | May 17, 2025 19:30 | May 18, 2025 10:45 | 15h 15m | 4,136 | 13K |
| 9 | August 14, 2025 10:45 | August 14, 2025 21:00 | 10h 15m | 3,929 | 1,086 |
| 10 | October 31, 2025 01:15 | November 2, 2025 03:45 | 2d 2h | 2,632 | 17K |
Outage episodes by size in 2025: 121 reached 100+ customers, 25 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 Grafton 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 |
| Liberty Utilities (Granite State Electri | 2024 | 6.2 hrs | 1.55 | 1.5 hrs | 0.82 |
| New Hampshire Elec Coop Inc | - | - | - | - | - |
| Precinct of Woodsville | - | - | - | - | - |
| Town of Ashland | - | - | - | - | - |
| Town of Littleton - (NH) | - | - | - | - | - |
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 ÷ 49,895 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. Grafton County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Grafton 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/grafton-county