County annual report · FIPS 33015
2023 Rockingham County, NH Power Outage Report
In 2023, customers in Rockingham County, NH went without power for an average of 7.3 hours, a total of 1.1M customer-hours (New Hampshire average 9.5 hours). That ranks 7th worst of 10 New Hampshire counties and 1112th 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 Rockingham 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 | January 23, 2023 01:30 | January 27, 2023 10:45 | 4d 9h | 21,774 | 451K |
| 2 | March 14, 2023 09:30 | March 18, 2023 00:45 | 3d 15h | 16,849 | 297K |
| 3 | December 18, 2023 10:30 | December 20, 2023 18:00 | 2d 7h | 15,872 | 146K |
| 4 | May 28, 2023 20:30 | May 28, 2023 23:30 | 3h | 12,417 | 3,260 |
| 5 | September 8, 2023 18:45 | September 10, 2023 06:00 | 1d 11h | 10,991 | 35K |
| 6 | August 8, 2023 14:45 | August 8, 2023 19:00 | 4h 15m | 5,445 | 10K |
| 7 | May 30, 2023 14:00 | May 30, 2023 18:15 | 4h 15m | 5,211 | 2,624 |
| 8 | October 27, 2023 22:00 | October 27, 2023 23:15 | 1h 15m | 4,571 | 1,520 |
| 9 | January 20, 2023 05:45 | January 22, 2023 04:15 | 1d 22h | 4,055 | 23K |
| 10 | April 4, 2023 16:30 | April 5, 2023 01:00 | 8h 30m | 3,309 | 1,881 |
Outage episodes by size in 2023: 153 reached 100+ customers, 31 reached 1,000+ customers, 5 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 Rockingham 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 |
| Liberty Utilities (Granite State Electri | 2023 | 4.0 hrs | 1.15 | 2.6 hrs | 0.88 |
| Unitil Energy Systems | 2023 | 4.3 hrs | 1.55 | 1.5 hrs | 0.89 |
| 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 ÷ 154,048 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. Rockingham County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Rockingham 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/rockingham-county