County annual report · FIPS 36103
2020 Suffolk County, NY Power Outage Report
In 2020, customers in Suffolk County, NY went without power for an average of 24.1 hours, a total of 15.8M customer-hours (New York average 10.4 hours). That ranks 7th worst of 62 New York counties and 358th of 3,019 nationally.
Compared with NY, the US and 2019
Coverage line is EAGLE-I's share of New York customers tracked each year.
Biggest outages in Suffolk County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 19, 2020 11:30 | August 24, 2020 06:15 | 35d 18h | 197,669 | 15.1M |
| 2 | April 13, 2020 08:15 | April 18, 2020 07:30 | 4d 23h | 13,370 | 138K |
| 3 | July 16, 2020 11:30 | July 17, 2020 03:45 | 16h 15m | 5,863 | 7,784 |
| 4 | November 30, 2020 11:30 | December 3, 2020 08:00 | 2d 20h | 5,368 | 36K |
| 5 | October 31, 2020 11:15 | November 4, 2020 04:30 | 3d 17h | 4,703 | 27K |
| 6 | February 7, 2020 04:30 | February 13, 2020 06:00 | 6d 1h | 4,236 | 26K |
| 7 | September 29, 2020 10:00 | October 1, 2020 05:30 | 1d 19h | 4,134 | 16K |
| 8 | December 16, 2020 13:15 | December 18, 2020 05:15 | 1d 16h | 3,515 | 37K |
| 9 | November 26, 2020 10:00 | November 28, 2020 22:45 | 2d 12h | 3,477 | 5,547 |
| 10 | July 1, 2020 10:45 | July 8, 2020 07:15 | 6d 20h | 3,247 | 37K |
Outage episodes by size in 2020: 204 reached 100+ customers, 60 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 2020, 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 99% of New York's customers in 2020; 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, 2020, 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/2020/new-york/suffolk-county