County annual report · FIPS 33009
2024 Grafton County, NH Power Outage Report
In 2024, customers in Grafton County, NH went without power for an average of 12.0 hours, a total of 600K customer-hours (New Hampshire average 14.2 hours). That ranks 7th worst of 10 New Hampshire counties and 784th of 2,990 nationally.
Compared with NH, the US and 2023
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Grafton County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 13, 2024 11:15 | January 17, 2024 01:30 | 3d 14h | 9,149 | 176K |
| 2 | March 10, 2024 04:15 | March 13, 2024 02:15 | 2d 22h | 6,750 | 58K |
| 3 | June 8, 2024 11:15 | June 8, 2024 11:45 | 30m | 4,385 | 2,193 |
| 4 | April 3, 2024 20:15 | April 7, 2024 20:30 | 4d | 4,076 | 106K |
| 5 | October 15, 2024 12:45 | October 15, 2024 15:00 | 2h 15m | 3,852 | 4,079 |
| 6 | November 28, 2024 18:00 | November 30, 2024 07:00 | 1d 13h | 2,811 | 21K |
| 7 | August 9, 2024 18:30 | August 12, 2024 18:30 | 3d | 2,406 | 21K |
| 8 | January 10, 2024 04:30 | January 11, 2024 02:30 | 22h | 2,404 | 25K |
| 9 | June 19, 2024 16:15 | June 21, 2024 04:15 | 1d 12h | 2,219 | 11K |
| 10 | October 12, 2024 10:45 | October 13, 2024 21:15 | 1d 10h | 2,215 | 7,984 |
Outage episodes by size in 2024: 103 reached 100+ customers, 26 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 2024, 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 2024; 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, 2024, 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/2024/new-hampshire/grafton-county