County annual report · FIPS 33005
2025 Cheshire County, NH Power Outage Report
In 2025, customers in Cheshire County, NH went without power for an average of 3.1 hours, a total of 111K customer-hours (New Hampshire average 3.8 hours). That ranks 7th worst of 10 New Hampshire counties and 2035th of 3,000 nationally.
Compared with NH, the US and 2024
Coverage line is EAGLE-I's share of New Hampshire customers tracked each year.
Biggest outages in Cheshire County, 2025
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 6, 2025 12:30 | March 6, 2025 16:30 | 4h | 10,451 | 2,617 |
| 2 | October 31, 2025 03:15 | November 2, 2025 06:15 | 2d 3h | 1,502 | 13K |
| 3 | September 25, 2025 14:15 | September 26, 2025 11:15 | 21h | 1,471 | 6,247 |
| 4 | April 25, 2025 21:00 | April 25, 2025 23:15 | 2h 15m | 1,180 | 2,359 |
| 5 | October 25, 2025 13:00 | October 25, 2025 17:30 | 4h 30m | 1,172 | 3,344 |
| 6 | June 20, 2025 13:45 | June 21, 2025 17:45 | 1d 4h | 1,121 | 6,422 |
| 7 | March 7, 2025 07:45 | March 9, 2025 00:15 | 1d 16h | 1,117 | 6,581 |
| 8 | February 15, 2025 18:45 | February 15, 2025 20:30 | 1h 45m | 949 | 1,659 |
| 9 | January 22, 2025 09:45 | January 22, 2025 14:30 | 4h 45m | 896 | 1,585 |
| 10 | March 30, 2025 03:00 | April 1, 2025 04:15 | 2d 1h | 729 | 13K |
Outage episodes by size in 2025: 91 reached 100+ customers, 7 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 2025, 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 | 2024 | 13.1 hrs | 1.60 | 82 min | 0.74 |
| Liberty Utilities (Granite State Electri | 2024 | 6.2 hrs | 1.55 | 1.5 hrs | 0.82 |
| 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 2025; 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, 2025, 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/2025/new-hampshire/cheshire-county