County annual report · FIPS 36045
2025 Jefferson County, NY Power Outage Report
In 2025, customers in Jefferson County, NY went without power for an average of 4.0 hours, a total of 252K customer-hours (New York average 2.4 hours). That ranks 36th worst of 62 New York counties and 1757th of 3,000 nationally.
Compared with NY, the US and 2024
Coverage line is EAGLE-I's share of New York customers tracked each year.
Biggest outages in Jefferson 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 | April 25, 2025 17:45 | April 26, 2025 09:00 | 15h 15m | 23,306 | 28K |
| 2 | June 22, 2025 06:30 | June 24, 2025 02:45 | 1d 20h | 7,831 | 73K |
| 3 | August 3, 2025 09:45 | August 3, 2025 11:30 | 1h 45m | 5,706 | 9,985 |
| 4 | February 22, 2025 19:15 | February 22, 2025 19:30 | 15m | 4,166 | 1,042 |
| 5 | June 15, 2025 05:00 | June 15, 2025 12:15 | 7h 15m | 3,663 | 2,758 |
| 6 | March 28, 2025 21:30 | March 31, 2025 22:00 | 3d | 3,408 | 25K |
| 7 | December 19, 2025 11:00 | December 20, 2025 20:45 | 1d 9h | 2,959 | 9,696 |
| 8 | June 21, 2025 20:45 | June 21, 2025 23:00 | 2h 15m | 2,628 | 841 |
| 9 | February 25, 2025 19:30 | February 25, 2025 22:30 | 3h | 2,598 | 2,954 |
| 10 | August 15, 2025 12:00 | August 15, 2025 14:30 | 2h 30m | 2,292 | 601 |
Outage episodes by size in 2025: 79 reached 100+ customers, 29 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 Jefferson 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 |
|---|---|---|---|---|---|
| Niagara Mohawk Power Corp. | 2024 | 8.5 hrs | 1.69 | 2.3 hrs | 1.05 |
| Village of Philadelphia - (NY) | - | - | - | - | - |
| Village of Theresa - (NY) | - | - | - | - | - |
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 York's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 62,240 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. Jefferson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jefferson County, NY 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-york/jefferson-county