County annual report · FIPS 33007
2017 Coos County, NH Power Outage Report
In 2017, customers in Coos County, NH went without power for an average of 21.1 hours, a total of 507K customer-hours (New Hampshire average 14.3 hours). That ranks 3rd worst of 10 New Hampshire counties and 258th of 2,786 nationally.
Compared with NH, the US and 2016
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Coos County, 2017
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 30, 2017 04:45 | November 4, 2017 23:15 | 5d 18h | 8,259 | 441K |
| 2 | September 23, 2017 19:15 | September 23, 2017 20:45 | 1h 30m | 4,352 | 2,180 |
| 3 | March 2, 2017 14:30 | March 3, 2017 07:15 | 16h 45m | 1,703 | 3,313 |
| 4 | January 11, 2017 02:30 | January 11, 2017 23:00 | 20h 30m | 1,661 | 6,165 |
| 5 | March 18, 2017 18:45 | March 18, 2017 20:30 | 1h 45m | 1,660 | 421 |
| 6 | November 19, 2017 07:30 | November 19, 2017 10:15 | 2h 45m | 1,620 | 4,050 |
| 7 | November 10, 2017 07:45 | November 11, 2017 22:15 | 1d 14h | 1,576 | 5,804 |
| 8 | May 5, 2017 21:00 | May 6, 2017 09:15 | 12h 15m | 1,354 | 4,194 |
| 9 | April 4, 2017 14:30 | April 4, 2017 22:00 | 7h 30m | 1,156 | 3,614 |
| 10 | May 25, 2017 00:15 | May 25, 2017 01:15 | 1h | 980 | 980 |
Outage episodes by size in 2017: 44 reached 100+ customers, 9 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 2017, 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 | 2017 | 16.1 hrs | 1.92 | 2.0 hrs | 1.11 |
| 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 2017; 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, 2017, 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/2017/new-hampshire/coos-county