County annual report · FIPS 33005
2018 Cheshire County, NH Power Outage Report
In 2018, customers in Cheshire County, NH went without power for an average of 11.1 hours, a total of 401K customer-hours (New Hampshire average 5.8 hours). That ranks 3rd worst of 10 New Hampshire counties and 497th of 2,798 nationally.
Compared with NH, the US and 2017
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Cheshire County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 18, 2018 18:30 | June 21, 2018 00:45 | 2d 6h | 13,115 | 145K |
| 2 | June 11, 2018 20:30 | June 11, 2018 23:30 | 3h | 6,648 | 7,815 |
| 3 | November 27, 2018 01:15 | December 1, 2018 01:15 | 4d | 4,938 | 39K |
| 4 | April 4, 2018 23:15 | April 7, 2018 11:00 | 2d 11h | 4,927 | 50K |
| 5 | August 12, 2018 21:30 | August 13, 2018 02:45 | 5h 15m | 4,039 | 13K |
| 6 | July 26, 2018 18:45 | July 27, 2018 03:00 | 8h 15m | 2,621 | 2,006 |
| 7 | February 21, 2018 17:45 | February 21, 2018 23:30 | 5h 45m | 2,534 | 1,914 |
| 8 | May 7, 2018 14:30 | May 7, 2018 17:45 | 3h 15m | 2,533 | 656 |
| 9 | May 4, 2018 23:30 | May 6, 2018 23:45 | 2d | 2,501 | 17K |
| 10 | January 6, 2018 03:00 | January 6, 2018 03:15 | 15m | 2,251 | 563 |
Outage episodes by size in 2018: 98 reached 100+ customers, 18 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 Cheshire County reported on EIA Form 861 for 2018, 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 |
| 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 88% of New Hampshire's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 36,014 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. Cheshire County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cheshire County, NH annual power outage report, 2018, 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/2018/new-hampshire/cheshire-county