County annual report · FIPS 33003
2021 Carroll County, NH Power Outage Report
In 2021, customers in Carroll County, NH went without power for an average of 11.0 hours, a total of 286K customer-hours (New Hampshire average 3.4 hours). That ranks 1st worst of 10 New Hampshire counties and 725th 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 Carroll 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 | September 13, 2021 01:00 | September 13, 2021 03:00 | 2h | 6,968 | 5,537 |
| 2 | March 2, 2021 03:45 | March 4, 2021 23:00 | 2d 19h | 6,618 | 93K |
| 3 | September 15, 2021 19:30 | September 16, 2021 10:00 | 14h 30m | 4,548 | 11K |
| 4 | March 29, 2021 12:00 | April 7, 2021 22:15 | 9d 10h | 3,569 | 66K |
| 5 | June 28, 2021 17:15 | June 28, 2021 20:30 | 3h 15m | 3,520 | 4,499 |
| 6 | October 14, 2021 19:00 | October 14, 2021 20:00 | 1h | 3,421 | 2,566 |
| 7 | October 7, 2021 13:00 | October 7, 2021 13:30 | 30m | 3,072 | 1,536 |
| 8 | October 19, 2021 13:15 | October 20, 2021 01:00 | 11h 45m | 2,727 | 2,168 |
| 9 | August 13, 2021 23:45 | August 14, 2021 03:15 | 3h 30m | 2,527 | 5,525 |
| 10 | October 26, 2021 22:30 | October 27, 2021 21:45 | 23h 15m | 2,042 | 9,026 |
Outage episodes by size in 2021: 95 reached 100+ customers, 23 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 Carroll 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 |
| New Hampshire Elec Coop Inc | - | - | - | - | - |
| Town of Wolfeboro - (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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 26,009 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. Carroll County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Carroll 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/carroll-county