County annual report · FIPS 36045
2018 Jefferson County, NY Power Outage Report
In 2018, customers in Jefferson County, NY went without power for an average of 3.4 hours, a total of 210K customer-hours (New York average 7.4 hours). That ranks 50th worst of 60 New York counties and 1401st of 2,798 nationally.
Compared with NY, the US and 2017
Coverage line is EAGLE-I's share of New York customers tracked each year.
Biggest outages in Jefferson County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 16, 2018 04:45 | January 16, 2018 07:15 | 2h 30m | 15,947 | 37K |
| 2 | April 16, 2018 09:15 | April 17, 2018 04:00 | 18h 45m | 6,372 | 12K |
| 3 | May 4, 2018 22:00 | May 8, 2018 19:00 | 3d 21h | 4,921 | 36K |
| 4 | April 4, 2018 16:00 | April 7, 2018 17:15 | 3d 1h | 3,355 | 28K |
| 5 | August 1, 2018 13:45 | August 1, 2018 19:30 | 5h 45m | 2,970 | 2,387 |
| 6 | August 17, 2018 12:15 | August 17, 2018 14:30 | 2h 15m | 2,181 | 4,362 |
| 7 | July 17, 2018 11:45 | July 17, 2018 21:00 | 9h 15m | 2,111 | 1,093 |
| 8 | March 15, 2018 01:15 | March 15, 2018 04:30 | 3h 15m | 2,074 | 692 |
| 9 | May 31, 2018 19:30 | June 1, 2018 03:30 | 8h | 1,817 | 12K |
| 10 | April 17, 2018 13:30 | April 17, 2018 13:45 | 15m | 1,816 | 454 |
Outage episodes by size in 2018: 63 reached 100+ customers, 20 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 2018, 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. | 2018 | 6.6 hrs | 1.53 | 2.5 hrs | 1.06 |
| 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 98% of New York's customers in 2018; 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, 2018, 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/2018/new-york/jefferson-county