- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Longfalls Facility: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Longfalls Facility
Power plant · Hydro
Key facts
Power plant · Hydroran 19% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1991
- Net generation, 2025
- 5,443 MWh
- Grid
- 23 kV to Niagara Mohawk Power Corp. (NYIS)
- Location
- Jefferson County, New York
- Operated by
- Ampersand Long Falls Hydro, LLCSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 5,443
MWh - Fuel burned, 2025
- 18,572
MMBtu - Capacity factor, 2025
- 18.8
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 5,443 | 18,572 | 18.8% | — |
| 2023 | 881 | 3,005 | 3.0% | — |
| 2022 | 0 | 0 | — | — |
| 2021 | 0 | 0 | — | — |
| 2020 | 0 | 0 | — | — |
| 2019 | 989 | 8,807 | 3.4% | — |
| 2018 | 4,366 | 39,748 | 15.1% | — |
| 2017 | 13,487 | 124,256 | 46.7% | — |
| 2016 | 8,320 | 76,811 | 28.7% | — |
| 2015 | 8,534 | 79,530 | 29.5% | — |
| 2014 | 5,158 | 49,053 | 17.8% | — |
| 2013 | 12 | 116 | 0.0% | — |
| 2012 | 18 | 172 | 0.1% | — |
| 2011 | 9 | 88 | 0.0% | — |
| 2010 | 9 | 88 | 0.0% | — |
| 2009 | 10 | 97 | 0.0% | — |
| 2008 | 11,221 | 110,572 | 38.7% | — |
| 2007 | 7 | 69 | 0.0% | — |
| 2006 | 10 | 101 | 0.0% | — |
| 2005 | 9,036 | 90,351 | 31.3% | — |
| 2004 | 9,075 | 90,950 | 31.3% | — |
| 2003 | 8,004 | 81,966 | 27.7% | — |
How these are worked out
Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.