County annual report · FIPS 36059
2015 Nassau County, NY Power Outage Report
In 2015, customers in Nassau County, NY went without power for an average of 1.0 hours, a total of 420K customer-hours (New York average 1.6 hours). That ranks 57th worst of 62 New York counties and 1778th of 2,484 nationally.
Compared with NY, the US
Coverage line is EAGLE-I's share of New York customers tracked each year.
Biggest outages in Nassau County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 25, 2015 09:45 | August 28, 2015 08:00 | 2d 22h | 6,771 | 20K |
| 2 | August 11, 2015 10:00 | August 13, 2015 06:15 | 1d 20h | 2,773 | 8,815 |
| 3 | August 6, 2015 11:15 | August 11, 2015 07:15 | 4d 20h | 1,625 | 5,156 |
| 4 | August 18, 2015 05:30 | August 23, 2015 08:15 | 5d 2h | 1,344 | 9,223 |
| 5 | November 18, 2015 15:45 | November 20, 2015 19:45 | 2d 4h | 998 | 8,122 |
| 6 | July 1, 2015 13:45 | July 3, 2015 02:00 | 1d 12h | 994 | 5,761 |
| 7 | July 21, 2015 22:15 | July 22, 2015 22:30 | 1d | 993 | 7,317 |
| 8 | August 28, 2015 12:15 | August 29, 2015 09:45 | 21h 30m | 987 | 2,366 |
| 9 | December 27, 2015 05:00 | December 28, 2015 10:45 | 1d 5h | 983 | 1,547 |
| 10 | July 16, 2015 09:15 | July 16, 2015 17:30 | 8h 15m | 981 | 2,764 |
Outage episodes by size in 2015: 160 reached 100+ customers, 4 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 Nassau County reported on EIA Form 861 for 2015, 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 |
|---|---|---|---|---|---|
| Long Island Power Authority | - | - | - | - | - |
| Village of Freeport - (NY) | - | - | - | - | - |
| 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 2015; 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, 2015, 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/). https://massoutage.com/reports/2015/new-york/nassau-county