County annual report · FIPS 36059
2017 Nassau County, NY Power Outage Report
In 2017, customers in Nassau County, NY went without power for an average of 2.9 hours, a total of 1.2M customer-hours (New York average 3.9 hours). That ranks 49th worst of 62 New York counties and 1360th of 2,786 nationally.
Compared with NY, the US and 2016
Coverage line is EAGLE-I's share of New York customers tracked each year.
Biggest outages in Nassau County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 24, 2017 07:15 | November 5, 2017 04:00 | 11d 20h | 13,903 | 187K |
| 2 | March 1, 2017 19:30 | March 5, 2017 11:30 | 3d 16h | 13,813 | 26K |
| 3 | October 5, 2017 02:45 | October 5, 2017 09:45 | 7h | 9,600 | 2,482 |
| 4 | July 7, 2017 11:30 | August 4, 2017 05:45 | 27d 18h | 7,057 | 391K |
| 5 | February 16, 2017 13:00 | February 17, 2017 08:45 | 19h 45m | 6,384 | 2,711 |
| 6 | January 22, 2017 15:00 | January 25, 2017 10:15 | 2d 19h | 5,384 | 32K |
| 7 | September 1, 2017 11:30 | September 2, 2017 07:45 | 20h 15m | 5,287 | 1,902 |
| 8 | June 4, 2017 10:45 | June 5, 2017 03:45 | 17h | 5,267 | 3,172 |
| 9 | October 20, 2017 12:00 | October 21, 2017 08:30 | 20h 30m | 5,037 | 7,779 |
| 10 | June 9, 2017 11:30 | July 6, 2017 22:45 | 27d 11h | 4,789 | 109K |
Outage episodes by size in 2017: 189 reached 100+ customers, 87 reached 1,000+ customers, 2 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 Nassau County reported on EIA Form 861 for 2017, 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 |
|---|---|---|---|---|---|
| Village of Freeport - (NY) | 2017 | 18 min | 0.30 | 18 min | 0.30 |
| Long Island Power Authority | - | - | - | - | - |
| Village of Rockville Centre - (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 2017; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 427,483 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. Nassau County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Nassau County, NY annual power outage report, 2017, 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/2017/new-york/nassau-county