County annual report · FIPS 36109
2021 Tompkins County, NY Power Outage Report
In 2021, customers in Tompkins County, NY went without power for an average of 3.5 hours, a total of 220K customer-hours (New York average 2.7 hours). That ranks 42nd worst of 62 New York counties and 1691st of 2,974 nationally.
Compared with NY, the US and 2020
Coverage line is EAGLE-I's share of New York customers tracked each year.
Biggest outages in Tompkins County, 2021
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 29, 2021 20:30 | July 1, 2021 04:00 | 1d 7h | 5,229 | 27K |
| 2 | March 26, 2021 14:45 | March 27, 2021 20:30 | 1d 5h | 3,724 | 13K |
| 3 | August 13, 2021 18:15 | August 14, 2021 01:30 | 7h 15m | 3,477 | 6,665 |
| 4 | September 13, 2021 19:45 | September 14, 2021 03:15 | 7h 30m | 3,354 | 8,899 |
| 5 | July 6, 2021 18:15 | July 7, 2021 03:30 | 9h 15m | 3,302 | 7,900 |
| 6 | July 17, 2021 21:30 | July 19, 2021 03:45 | 1d 6h | 2,952 | 17K |
| 7 | June 21, 2021 19:30 | June 23, 2021 00:30 | 1d 5h | 2,796 | 23K |
| 8 | June 28, 2021 19:30 | June 29, 2021 17:00 | 21h 30m | 2,156 | 5,425 |
| 9 | June 19, 2021 22:45 | June 20, 2021 03:00 | 4h 15m | 2,122 | 4,086 |
| 10 | August 14, 2021 21:00 | August 25, 2021 22:45 | 11d 1h | 2,119 | 15K |
Outage episodes by size in 2021: 86 reached 100+ customers, 23 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 Tompkins County reported on EIA Form 861 for 2021, 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 |
|---|---|---|---|---|---|
| New York State Elec & Gas Corp | 2016 | 4.5 hrs | 1.56 | 3.6 hrs | 1.47 |
| AVANGRID | - | - | - | - | - |
| Village of Groton - (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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 63,720 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. Tompkins County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Tompkins County, NY annual power outage report, 2021, 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/2021/new-york/tompkins-county