County annual report · FIPS 36059
2024 Nassau County, NY Power Outage Report
In 2024, customers in Nassau County, NY went without power for an average of 1.4 hours, a total of 618K customer-hours (New York average 4.0 hours). That ranks 56th worst of 62 New York counties and 2580th of 2,990 nationally.
Compared with NY, the US and 2023
Coverage line is EAGLE-I's share of New York customers tracked each year.
Biggest outages in Nassau County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 26, 2024 10:15 | June 28, 2024 05:15 | 1d 19h | 7,575 | 35K |
| 2 | February 14, 2024 08:45 | February 15, 2024 11:45 | 1d 3h | 5,234 | 3,004 |
| 3 | November 11, 2024 03:00 | November 12, 2024 06:00 | 1d 3h | 5,047 | 19K |
| 4 | November 24, 2024 12:30 | November 25, 2024 03:45 | 15h 15m | 5,026 | 3,194 |
| 5 | January 9, 2024 11:15 | January 11, 2024 08:15 | 1d 21h | 4,680 | 40K |
| 6 | September 15, 2024 15:15 | September 15, 2024 20:45 | 5h 30m | 4,223 | 4,968 |
| 7 | July 5, 2024 20:15 | July 7, 2024 07:45 | 1d 11h | 3,766 | 6,182 |
| 8 | March 15, 2024 11:45 | March 16, 2024 05:45 | 18h | 3,687 | 4,772 |
| 9 | December 16, 2024 13:30 | December 17, 2024 08:30 | 19h | 3,632 | 3,251 |
| 10 | August 3, 2024 08:45 | August 5, 2024 08:30 | 1d 23h | 3,619 | 21K |
Outage episodes by size in 2024: 276 reached 100+ customers, 63 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 2024, 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) | 2024 | 27 min | 1.15 | 7 min | 0.14 |
| 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 2024; 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, 2024, 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/2024/new-york/nassau-county