County annual report · FIPS 36069
2025 Ontario County, NY Power Outage Report
In 2025, customers in Ontario County, NY went without power for an average of 2.7 hours, a total of 207K customer-hours (New York average 2.4 hours). That ranks 44th worst of 62 New York counties and 2166th 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 Ontario 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 | September 17, 2025 00:30 | September 17, 2025 03:15 | 2h 45m | 7,637 | 9,662 |
| 2 | September 26, 2025 16:30 | September 26, 2025 19:30 | 3h | 7,551 | 3,714 |
| 3 | October 19, 2025 17:00 | October 21, 2025 02:00 | 1d 9h | 7,503 | 14K |
| 4 | July 28, 2025 18:30 | July 29, 2025 02:45 | 8h 15m | 6,788 | 5,598 |
| 5 | August 24, 2025 18:15 | August 25, 2025 19:15 | 1d 1h | 5,415 | 13K |
| 6 | February 16, 2025 11:30 | February 17, 2025 02:45 | 15h 15m | 4,174 | 12K |
| 7 | December 20, 2025 01:45 | December 20, 2025 20:45 | 19h | 3,893 | 14K |
| 8 | April 29, 2025 16:15 | May 1, 2025 02:15 | 1d 10h | 3,364 | 15K |
| 9 | March 16, 2025 16:00 | March 17, 2025 07:45 | 15h 45m | 2,990 | 15K |
| 10 | March 11, 2025 18:30 | March 11, 2025 19:30 | 1h | 2,943 | 2,943 |
Outage episodes by size in 2025: 110 reached 100+ customers, 19 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 Ontario 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 |
|---|---|---|---|---|---|
| New York State Elec & Gas Corp | 2016 | 4.5 hrs | 1.56 | 3.6 hrs | 1.47 |
| Niagara Mohawk Power Corp. | 2024 | 8.5 hrs | 1.69 | 2.3 hrs | 1.05 |
| AVANGRID | - | - | - | - | - |
| Rochester Gas & Electric Corp | - | - | - | - | - |
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 ÷ 75,985 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. Ontario County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Ontario 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/ontario-county