County annual report · FIPS 33011
2019 Hillsborough County, NH Power Outage Report
In 2019, customers in Hillsborough County, NH went without power for an average of 1.4 hours, a total of 277K customer-hours (New Hampshire average 3.3 hours). That ranks 10th worst of 10 New Hampshire counties and 2324th of 2,945 nationally.
Compared with NH, the US and 2018
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Hillsborough County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 23, 2019 19:00 | November 24, 2019 02:15 | 7h 15m | 7,982 | 3,512 |
| 2 | October 31, 2019 13:45 | November 3, 2019 11:30 | 2d 21h | 6,161 | 66K |
| 3 | October 17, 2019 00:30 | October 19, 2019 21:15 | 2d 20h | 5,367 | 62K |
| 4 | February 25, 2019 08:00 | February 27, 2019 06:30 | 1d 22h | 4,928 | 40K |
| 5 | December 15, 2019 11:30 | December 16, 2019 06:30 | 19h | 4,361 | 12K |
| 6 | February 7, 2019 06:30 | February 7, 2019 18:30 | 12h | 3,538 | 4,034 |
| 7 | February 24, 2019 21:15 | February 25, 2019 00:15 | 3h | 3,532 | 1,680 |
| 8 | April 3, 2019 17:45 | April 5, 2019 02:00 | 1d 8h | 3,038 | 21K |
| 9 | February 9, 2019 17:15 | February 9, 2019 22:00 | 4h 45m | 2,648 | 2,775 |
| 10 | February 8, 2019 19:30 | February 9, 2019 16:00 | 20h 30m | 1,624 | 5,861 |
Outage episodes by size in 2019: 82 reached 100+ customers, 12 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 Hillsborough County reported on EIA Form 861 for 2019, 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 | 2018 | 6.4 hrs | 1.88 | 2.0 hrs | 1.07 |
| Liberty Utilities (Granite State Electri | 2018 | 19.0 hrs | 1.87 | 2.6 hrs | 1.02 |
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 2019; 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, 2019, 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/2019/new-hampshire/hillsborough-county