County annual report · FIPS 36043
2021 Herkimer County, NY Power Outage Report
In 2021, customers in Herkimer County, NY went without power for an average of 5.6 hours, a total of 156K customer-hours (New York average 2.7 hours). That ranks 26th worst of 62 New York counties and 1225th 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 Herkimer 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 | December 11, 2021 23:30 | December 13, 2021 22:45 | 1d 23h | 5,907 | 25K |
| 2 | July 20, 2021 23:15 | July 21, 2021 21:45 | 22h 30m | 5,445 | 31K |
| 3 | May 26, 2021 15:45 | May 27, 2021 08:15 | 16h 30m | 5,133 | 18K |
| 4 | November 3, 2021 11:45 | November 3, 2021 12:00 | 15m | 3,513 | 878 |
| 5 | March 26, 2021 19:45 | March 27, 2021 20:00 | 1d | 3,235 | 3,751 |
| 6 | March 24, 2021 17:00 | March 24, 2021 17:30 | 30m | 3,233 | 1,617 |
| 7 | April 28, 2021 20:00 | April 29, 2021 01:00 | 5h | 3,232 | 4,847 |
| 8 | October 21, 2021 18:15 | October 21, 2021 18:30 | 15m | 2,801 | 700 |
| 9 | October 11, 2021 15:15 | October 11, 2021 15:30 | 15m | 2,799 | 700 |
| 10 | May 23, 2021 14:15 | May 23, 2021 17:15 | 3h | 1,665 | 2,236 |
Outage episodes by size in 2021: 54 reached 100+ customers, 15 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 Herkimer 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 |
| Niagara Mohawk Power Corp. | 2021 | 3.7 hrs | 1.32 | 2.2 hrs | 1.12 |
| AVANGRID | - | - | - | - | - |
| Otsego Electric Coop, Inc | - | - | - | - | - |
| Mohawk Municipal Comm | - | - | - | - | - |
| Village of Frankfort - (NY) | - | - | - | - | - |
| Village of Ilion - (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 ÷ 27,865 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. Herkimer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Herkimer 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/herkimer-county