County annual report · FIPS 36075
2025 Oswego County, NY Power Outage Report
In 2025, customers in Oswego County, NY went without power for an average of 5.8 hours, a total of 333K customer-hours (New York average 2.4 hours). That ranks 22nd worst of 62 New York counties and 1320th 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 Oswego 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 | June 22, 2025 02:45 | June 24, 2025 14:15 | 2d 11h | 9,295 | 53K |
| 2 | July 17, 2025 18:30 | July 18, 2025 07:15 | 12h 45m | 6,690 | 5,889 |
| 3 | March 16, 2025 14:30 | March 18, 2025 01:15 | 1d 10h | 5,491 | 33K |
| 4 | October 31, 2025 15:45 | November 2, 2025 20:45 | 2d 5h | 5,490 | 26K |
| 5 | April 29, 2025 15:15 | April 30, 2025 22:00 | 1d 6h | 5,193 | 12K |
| 6 | December 4, 2025 16:00 | December 5, 2025 00:45 | 8h 45m | 4,483 | 7,107 |
| 7 | February 27, 2025 16:45 | February 28, 2025 01:30 | 8h 45m | 4,338 | 9,339 |
| 8 | January 29, 2025 15:45 | January 30, 2025 16:30 | 1d | 3,243 | 8,852 |
| 9 | November 15, 2025 13:00 | November 15, 2025 16:15 | 3h 15m | 2,914 | 749 |
| 10 | December 19, 2025 12:15 | December 20, 2025 20:30 | 1d 8h | 2,626 | 4,511 |
Outage episodes by size in 2025: 114 reached 100+ customers, 30 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 Oswego 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 |
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 ÷ 57,759 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. Oswego County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Oswego 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/oswego-county