County annual report · FIPS 33009
2020 Grafton County, NH Power Outage Report
In 2020, customers in Grafton County, NH went without power for an average of 10.1 hours, a total of 502K customer-hours (New Hampshire average 7.1 hours). That ranks 4th worst of 10 New Hampshire counties and 784th of 3,019 nationally.
Compared with NH, the US and 2019
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Grafton County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 4, 2020 16:30 | August 8, 2020 17:45 | 4d 1h | 11,201 | 205K |
| 2 | July 13, 2020 18:45 | July 14, 2020 03:00 | 8h 15m | 5,573 | 4,452 |
| 3 | March 2, 2020 11:15 | March 5, 2020 03:00 | 2d 15h | 4,258 | 46K |
| 4 | February 3, 2020 11:30 | February 3, 2020 14:45 | 3h 15m | 3,359 | 3,173 |
| 5 | September 30, 2020 05:30 | October 1, 2020 01:45 | 20h 15m | 3,280 | 9,229 |
| 6 | October 17, 2020 10:00 | October 18, 2020 06:00 | 20h | 3,002 | 19K |
| 7 | February 27, 2020 11:00 | February 28, 2020 10:00 | 23h | 2,919 | 11K |
| 8 | August 25, 2020 17:15 | August 26, 2020 22:15 | 1d 5h | 2,905 | 21K |
| 9 | February 7, 2020 17:15 | February 9, 2020 15:30 | 1d 22h | 2,750 | 23K |
| 10 | July 29, 2020 05:00 | July 29, 2020 15:15 | 10h 15m | 2,511 | 3,701 |
Outage episodes by size in 2020: 103 reached 100+ customers, 22 reached 1,000+ customers, 1 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 2020, 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 | 2020 | 7.7 hrs | 1.49 | 1.6 hrs | 0.81 |
| Liberty Utilities (Granite State Electri | 2020 | 2.5 hrs | 1.18 | 1.7 hrs | 0.99 |
| 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 99% of New Hampshire's customers in 2020; 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, 2020, 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/2020/new-hampshire/grafton-county