County annual report · FIPS 36043
2025 Herkimer County, NY Power Outage Report
In 2025, customers in Herkimer County, NY went without power for an average of 11.5 hours, a total of 320K customer-hours (New York average 2.4 hours). That ranks 4th worst of 62 New York counties and 690th 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 Herkimer 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 | June 22, 2025 08:00 | June 25, 2025 22:30 | 3d 14h | 4,932 | 139K |
| 2 | April 29, 2025 20:45 | May 2, 2025 15:45 | 2d 19h | 3,817 | 62K |
| 3 | February 19, 2025 05:30 | February 19, 2025 08:15 | 2h 45m | 3,783 | 7,567 |
| 4 | July 25, 2025 15:45 | July 25, 2025 17:30 | 1h 45m | 3,754 | 6,570 |
| 5 | December 29, 2025 04:45 | December 31, 2025 03:00 | 1d 22h | 2,337 | 23K |
| 6 | April 3, 2025 11:30 | April 4, 2025 04:30 | 17h | 2,125 | 10K |
| 7 | March 7, 2025 15:15 | March 7, 2025 20:00 | 4h 45m | 1,785 | 1,377 |
| 8 | October 31, 2025 14:15 | November 2, 2025 03:30 | 1d 13h | 1,528 | 3,500 |
| 9 | July 15, 2025 09:45 | July 15, 2025 20:45 | 11h | 1,498 | 1,582 |
| 10 | July 30, 2025 19:45 | July 31, 2025 06:15 | 10h 30m | 1,381 | 4,712 |
Outage episodes by size in 2025: 58 reached 100+ customers, 14 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 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 |
|---|---|---|---|---|---|
| New York State Elec & Gas Corp | 2016 | 4.5 hrs | 1.56 | 3.6 hrs | 1.47 |
| Niagara Mohawk Power Corp. | 2024 | 8.5 hrs | 1.69 | 2.3 hrs | 1.05 |
| 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 n/a of New York's customers in 2025; 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, 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2025/new-york/herkimer-county