County annual report · FIPS 33019
2021 Sullivan County, NH Power Outage Report
In 2021, customers in Sullivan County, NH went without power for an average of 5.9 hours, a total of 119K customer-hours (New Hampshire average 3.4 hours). That ranks 3rd worst of 10 New Hampshire counties and 1165th of 2,974 nationally.
Compared with NH, the US and 2020
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Sullivan County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 2, 2021 01:00 | March 3, 2021 15:15 | 1d 14h | 2,795 | 18K |
| 2 | July 29, 2021 19:45 | July 30, 2021 18:45 | 23h | 2,376 | 8,048 |
| 3 | May 26, 2021 21:30 | May 27, 2021 08:00 | 10h 30m | 2,254 | 6,489 |
| 4 | April 16, 2021 08:15 | April 16, 2021 23:30 | 15h 15m | 2,051 | 7,346 |
| 5 | May 29, 2021 06:00 | May 29, 2021 08:45 | 2h 45m | 1,989 | 4,236 |
| 6 | February 25, 2021 06:30 | February 25, 2021 09:15 | 2h 45m | 1,749 | 3,935 |
| 7 | June 9, 2021 01:00 | June 9, 2021 10:45 | 9h 45m | 1,531 | 2,574 |
| 8 | August 26, 2021 19:30 | August 27, 2021 09:15 | 13h 45m | 978 | 5,660 |
| 9 | June 30, 2021 16:30 | July 1, 2021 20:15 | 1d 3h | 929 | 2,982 |
| 10 | October 20, 2021 14:00 | October 20, 2021 17:30 | 3h 30m | 915 | 2,974 |
Outage episodes by size in 2021: 83 reached 100+ customers, 7 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 Sullivan County reported on EIA Form 861 for 2021, 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 | 2021 | 3.0 hrs | 1.07 | 1.6 hrs | 0.83 |
| Liberty Utilities (Granite State Electri | 2021 | 2.8 hrs | 1.04 | 1.8 hrs | 0.85 |
| New Hampshire Elec Coop Inc | - | - | - | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 20,079 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. Sullivan County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sullivan County, NH annual power outage report, 2021, 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/2021/new-hampshire/sullivan-county