County annual report · FIPS 36103
2025 Suffolk County, NY Power Outage Report
In 2025, customers in Suffolk County, NY went without power for an average of 1.6 hours, a total of 1.0M customer-hours (New York average 2.4 hours). That ranks 56th worst of 62 New York counties and 2590th of 3,000 nationally.
Compared with NY, the US and 2024
Coverage line is EAGLE-I's share of New York customers tracked each year.
Biggest outages in Suffolk County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 2, 2025 10:45 | February 3, 2025 07:00 | 20h 15m | 599,357 | 151K |
| 2 | February 20, 2025 12:00 | February 21, 2025 11:15 | 23h 15m | 32,599 | 79K |
| 3 | December 18, 2025 11:45 | December 22, 2025 09:15 | 3d 21h | 10,100 | 82K |
| 4 | July 16, 2025 03:45 | July 30, 2025 08:15 | 14d 4h | 6,371 | 49K |
| 5 | June 18, 2025 04:15 | June 21, 2025 09:15 | 3d 5h | 5,894 | 22K |
| 6 | November 28, 2025 13:15 | December 9, 2025 01:30 | 10d 12h | 5,716 | 15K |
| 7 | October 12, 2025 11:30 | October 15, 2025 09:00 | 2d 21h | 4,304 | 45K |
| 8 | January 13, 2025 13:00 | January 14, 2025 04:30 | 15h 30m | 4,170 | 4,133 |
| 9 | June 21, 2025 10:30 | July 5, 2025 07:45 | 13d 21h | 3,790 | 64K |
| 10 | February 15, 2025 13:15 | February 20, 2025 03:00 | 4d 13h | 3,275 | 27K |
Outage episodes by size in 2025: 190 reached 100+ customers, 55 reached 1,000+ customers, 3 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 Suffolk County reported on EIA Form 861 for 2025, 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 | - | - | - | - | - |
| Fishers Island Utility Co Inc | - | - | - | - | - |
| Village of Greenport - (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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 657,677 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. Suffolk County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Suffolk County, NY annual power outage report, 2025, 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/2025/new-york/suffolk-county