County annual report · FIPS 33007
2023 Coos County, NH Power Outage Report
In 2023, customers in Coos County, NH went without power for an average of 3.5 hours, a total of 85K customer-hours (New Hampshire average 9.5 hours). That ranks 10th worst of 10 New Hampshire counties and 1767th of 2,977 nationally.
Compared with NH, the US and 2022
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Coos County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 18, 2023 08:15 | December 20, 2023 19:45 | 2d 11h | 4,305 | 24K |
| 2 | July 7, 2023 18:00 | July 8, 2023 01:45 | 7h 45m | 2,635 | 5,029 |
| 3 | November 27, 2023 09:15 | November 27, 2023 17:45 | 8h 30m | 2,096 | 5,475 |
| 4 | April 5, 2023 21:45 | April 6, 2023 15:15 | 17h 30m | 1,875 | 12K |
| 5 | December 11, 2023 10:45 | December 12, 2023 18:00 | 1d 7h | 1,560 | 4,544 |
| 6 | August 11, 2023 02:00 | August 11, 2023 04:00 | 2h | 1,554 | 1,560 |
| 7 | April 29, 2023 00:45 | April 29, 2023 02:00 | 1h 15m | 1,548 | 1,547 |
| 8 | May 19, 2023 16:00 | May 19, 2023 19:45 | 3h 45m | 1,544 | 1,594 |
| 9 | December 4, 2023 09:00 | December 5, 2023 08:00 | 23h | 797 | 6,420 |
| 10 | April 7, 2023 11:45 | April 8, 2023 02:45 | 15h | 789 | 3,201 |
Outage episodes by size in 2023: 43 reached 100+ customers, 8 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 Coos County reported on EIA Form 861 for 2023, 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 | 2023 | 11.1 hrs | 1.50 | 84 min | 0.74 |
| 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 n/a of New Hampshire's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 24,038 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. Coos County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Coos County, NH annual power outage report, 2023, 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/2023/new-hampshire/coos-county