County annual report · FIPS 36103
2023 Suffolk County, NY Power Outage Report
In 2023, customers in Suffolk County, NY went without power for an average of 1.2 hours, a total of 773K customer-hours (New York average 2.2 hours). That ranks 57th worst of 62 New York counties and 2604th of 2,977 nationally.
Compared with NY, the US and 2022
Coverage line is EAGLE-I's share of New York customers tracked each year.
Biggest outages in Suffolk County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 17, 2023 11:30 | May 19, 2023 01:15 | 1d 13h | 14,791 | 5,566 |
| 2 | July 24, 2023 05:45 | August 2, 2023 07:15 | 9d 1h | 12,345 | 52K |
| 3 | August 13, 2023 05:00 | August 17, 2023 07:30 | 4d 2h | 8,843 | 73K |
| 4 | December 18, 2023 03:45 | December 21, 2023 07:30 | 3d 3h | 5,354 | 41K |
| 5 | February 2, 2023 12:15 | February 5, 2023 07:45 | 2d 19h | 4,339 | 37K |
| 6 | November 21, 2023 08:45 | November 30, 2023 01:30 | 8d 16h | 4,134 | 31K |
| 7 | September 10, 2023 09:45 | September 14, 2023 01:30 | 3d 15h | 3,996 | 12K |
| 8 | October 23, 2023 11:00 | October 24, 2023 05:15 | 18h 15m | 3,661 | 3,262 |
| 9 | July 12, 2023 10:00 | July 15, 2023 02:45 | 2d 16h | 3,111 | 11K |
| 10 | December 1, 2023 09:30 | December 3, 2023 05:15 | 1d 19h | 3,083 | 5,531 |
Outage episodes by size in 2023: 220 reached 100+ customers, 62 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 Suffolk County reported on EIA Form 861 for 2023, 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 2023; 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, 2023, 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/2023/new-york/suffolk-county