County annual report · FIPS 33011
2015 Hillsborough County, NH Power Outage Report
In 2015, customers in Hillsborough County, NH went without power for an average of 1.5 hours, a total of 287K customer-hours (New Hampshire average 2.3 hours). That ranks 9th worst of 10 New Hampshire counties and 1495th 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 Hillsborough 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 | March 17, 2015 20:00 | March 18, 2015 18:00 | 22h | 10,751 | 33K |
| 2 | August 25, 2015 13:15 | August 26, 2015 09:30 | 20h 15m | 5,440 | 25K |
| 3 | February 23, 2015 14:30 | February 23, 2015 15:45 | 1h 15m | 5,148 | 1,298 |
| 4 | July 1, 2015 19:45 | July 2, 2015 08:15 | 12h 30m | 4,820 | 5,362 |
| 5 | March 12, 2015 13:30 | March 12, 2015 14:45 | 1h 15m | 4,268 | 1,729 |
| 6 | October 29, 2015 12:15 | October 30, 2015 06:15 | 18h | 4,176 | 12K |
| 7 | June 28, 2015 05:45 | June 29, 2015 02:15 | 20h 30m | 3,976 | 13K |
| 8 | September 14, 2015 12:30 | September 14, 2015 17:00 | 4h 30m | 3,388 | 1,056 |
| 9 | August 4, 2015 18:30 | August 4, 2015 22:00 | 3h 30m | 3,378 | 9,627 |
| 10 | January 5, 2015 09:45 | January 5, 2015 19:15 | 9h 30m | 2,690 | 6,567 |
Outage episodes by size in 2015: 202 reached 100+ customers, 39 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 Hillsborough 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 |
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 ÷ 196,402 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. Hillsborough County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Hillsborough 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/hillsborough-county