County annual report · FIPS 36075
2021 Oswego County, NY Power Outage Report
In 2021, customers in Oswego County, NY went without power for an average of 6.2 hours, a total of 360K customer-hours (New York average 2.7 hours). That ranks 20th worst of 62 New York counties and 1122nd of 2,974 nationally.
Compared with NY, the US and 2020
Coverage line is EAGLE-I's share of New York customers tracked each year.
Biggest outages in Oswego County, 2021
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 30, 2021 11:00 | May 1, 2021 06:45 | 19h 45m | 11,773 | 24K |
| 2 | December 11, 2021 23:15 | December 13, 2021 06:45 | 1d 7h | 6,606 | 52K |
| 3 | October 13, 2021 12:30 | October 13, 2021 18:15 | 5h 45m | 5,458 | 4,905 |
| 4 | August 26, 2021 15:45 | August 26, 2021 17:00 | 1h 15m | 4,787 | 2,921 |
| 5 | June 21, 2021 17:30 | June 22, 2021 09:45 | 16h 15m | 4,772 | 26K |
| 6 | December 17, 2021 02:15 | December 18, 2021 02:30 | 1d | 4,752 | 34K |
| 7 | July 13, 2021 21:45 | July 15, 2021 07:00 | 1d 9h | 4,697 | 25K |
| 8 | October 13, 2021 21:15 | October 13, 2021 21:30 | 15m | 4,466 | 1,117 |
| 9 | April 6, 2021 19:15 | April 6, 2021 23:15 | 4h | 4,460 | 3,662 |
| 10 | May 26, 2021 14:00 | May 27, 2021 07:30 | 17h 30m | 3,977 | 9,676 |
Outage episodes by size in 2021: 129 reached 100+ customers, 37 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 Oswego County reported on EIA Form 861 for 2021, 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. | 2021 | 3.7 hrs | 1.32 | 2.2 hrs | 1.12 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of New York's customers in 2021; 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, 2021, 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/2021/new-york/oswego-county