County annual report · FIPS 33005
2023 Cheshire County, NH Power Outage Report
In 2023, customers in Cheshire County, NH went without power for an average of 32.4 hours, a total of 1.2M customer-hours (New Hampshire average 9.5 hours). That ranks 1st worst of 10 New Hampshire counties and 207th 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 Cheshire 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 | March 14, 2023 06:45 | March 18, 2023 06:45 | 4d | 19,245 | 706K |
| 2 | January 23, 2023 02:30 | January 27, 2023 06:15 | 4d 3h | 11,380 | 364K |
| 3 | March 31, 2023 15:00 | March 31, 2023 23:15 | 8h 15m | 2,573 | 3,359 |
| 4 | December 18, 2023 09:15 | December 20, 2023 08:15 | 1d 23h | 2,033 | 13K |
| 5 | July 29, 2023 22:30 | July 30, 2023 04:15 | 5h 45m | 1,605 | 7,443 |
| 6 | July 27, 2023 17:45 | July 28, 2023 10:30 | 16h 45m | 1,568 | 15K |
| 7 | May 26, 2023 19:45 | May 26, 2023 22:15 | 2h 30m | 1,235 | 941 |
| 8 | June 3, 2023 11:15 | June 3, 2023 15:45 | 4h 30m | 1,047 | 267 |
| 9 | May 28, 2023 02:00 | May 28, 2023 06:45 | 4h 45m | 1,010 | 4,798 |
| 10 | September 18, 2023 19:15 | September 18, 2023 20:00 | 45m | 989 | 248 |
Outage episodes by size in 2023: 74 reached 100+ customers, 9 reached 1,000+ customers, 2 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 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 |
| 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 ÷ 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, 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/cheshire-county