County annual report · FIPS 33015
2015 Rockingham County, NH Power Outage Report
In 2015, customers in Rockingham County, NH went without power for an average of 1.8 hours, a total of 277K customer-hours (New Hampshire average 2.3 hours). That ranks 6th worst of 10 New Hampshire counties and 1327th of 2,484 nationally.
Compared with NH, the US
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Rockingham County, 2015
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 20, 2015 06:30 | September 20, 2015 08:45 | 2h 15m | 11,482 | 9,182 |
| 2 | August 11, 2015 16:30 | August 11, 2015 19:45 | 3h 15m | 9,570 | 4,845 |
| 3 | June 26, 2015 06:00 | June 26, 2015 06:30 | 30m | 7,778 | 3,889 |
| 4 | November 17, 2015 19:00 | November 17, 2015 21:00 | 2h | 6,708 | 1,766 |
| 5 | November 20, 2015 15:15 | November 20, 2015 19:30 | 4h 15m | 6,708 | 2,844 |
| 6 | July 30, 2015 18:30 | July 30, 2015 19:45 | 1h 15m | 6,326 | 7,908 |
| 7 | October 29, 2015 18:15 | October 30, 2015 04:00 | 9h 45m | 5,528 | 7,598 |
| 8 | March 8, 2015 07:00 | March 18, 2015 18:00 | 10d 11h | 4,444 | 25K |
| 9 | September 4, 2015 10:30 | September 4, 2015 11:45 | 1h 15m | 4,118 | 3,795 |
| 10 | November 25, 2015 13:00 | November 25, 2015 15:45 | 2h 45m | 4,026 | 6,103 |
Outage episodes by size in 2015: 150 reached 100+ customers, 38 reached 1,000+ customers, 1 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 2015, 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 | 2015 | 1.9 hrs | 1.09 | 1.8 hrs | 1.05 |
| Liberty Utilities (Granite State Electri | 2015 | 2.2 hrs | 0.80 | 75 min | 0.72 |
| Unitil Energy Systems | 2015 | 1.9 hrs | 1.58 | 1.9 hrs | 1.58 |
| 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 2015; 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, 2015, 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/2015/new-hampshire/rockingham-county