County annual report · FIPS 33009
2019 Grafton County, NH Power Outage Report
In 2019, customers in Grafton County, NH went without power for an average of 5.8 hours, a total of 290K customer-hours (New Hampshire average 3.3 hours). That ranks 5th worst of 10 New Hampshire counties and 948th of 2,945 nationally.
Compared with NH, the US and 2018
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Grafton County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 17, 2019 04:30 | October 20, 2019 00:45 | 2d 20h | 8,931 | 73K |
| 2 | January 9, 2019 10:30 | January 11, 2019 05:45 | 1d 19h | 6,618 | 32K |
| 3 | March 4, 2019 16:15 | March 4, 2019 18:00 | 1h 45m | 5,309 | 7,784 |
| 4 | October 31, 2019 17:30 | November 3, 2019 23:15 | 3d 5h | 4,387 | 75K |
| 5 | February 25, 2019 14:45 | February 27, 2019 20:30 | 2d 5h | 4,236 | 33K |
| 6 | November 24, 2019 20:15 | November 25, 2019 18:45 | 22h 30m | 2,075 | 5,827 |
| 7 | January 31, 2019 18:30 | January 31, 2019 20:00 | 1h 30m | 1,450 | 366 |
| 8 | June 29, 2019 23:00 | June 30, 2019 10:15 | 11h 15m | 1,309 | 2,742 |
| 9 | October 1, 2019 14:45 | October 1, 2019 17:00 | 2h 15m | 1,308 | 2,943 |
| 10 | May 21, 2019 13:45 | May 22, 2019 05:30 | 15h 45m | 1,300 | 1,269 |
Outage episodes by size in 2019: 60 reached 100+ customers, 12 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 2019, 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 | 2018 | 6.4 hrs | 1.88 | 2.0 hrs | 1.07 |
| Liberty Utilities (Granite State Electri | 2018 | 19.0 hrs | 1.87 | 2.6 hrs | 1.02 |
| 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 2019; 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, 2019, 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/2019/new-hampshire/grafton-county