- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Flat Rock: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Flat Rock
Power plant · Hydro
Key facts
Power plant · Hydroran 33% of 2025 Out of service- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1924
- Net generation, 2025
- 14,645 MWh
- Grid
- 115 kV to Niagara Mohawk Power Corp. (NYIS)
- Location
- St Lawrence County, New York
- Operated by
- Erie Boulevard Hydropower LPSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 14,645
MWh - Fuel burned, 2025
- 49,969
MMBtu - Capacity factor, 2025
- 33.4
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 14,645 | 49,969 | 33.4% | — |
| 2024 | 18,980 | 64,759 | 43.2% | — |
| 2023 | 21,494 | 73,337 | 49.1% | — |
| 2022 | 19,327 | 65,944 | 44.1% | — |
| 2021 | 14,453 | 127,823 | 33.0% | — |
| 2020 | 11,417 | 100,092 | 26.0% | — |
| 2019 | 22,133 | 197,093 | 50.5% | — |
| 2018 | 19,432 | 176,908 | 44.4% | — |
| 2017 | 24,217 | 223,111 | 55.3% | — |
| 2016 | 14,788 | 136,522 | 33.7% | — |
| 2015 | 13,184 | 122,862 | 30.1% | — |
| 2014 | 18,754 | 178,351 | 42.8% | — |
| 2013 | 19,805 | 188,959 | 45.2% | — |
| 2012 | 15,353 | 146,099 | 35.0% | — |
| 2011 | 21,716 | 210,995 | 49.6% | — |
| 2010 | 17,653 | 172,221 | 40.3% | — |
| 2009 | 20,010 | 195,299 | 45.7% | — |
| 2008 | 23,369 | 230,277 | 53.2% | — |
| 2007 | 17,725 | 175,193 | 40.5% | — |
| 2006 | 21,972 | 217,942 | 50.2% | — |
| 2005 | 17,441 | 174,393 | 39.8% | — |
| 2004 | 1,293 | 12,958 | 2.9% | — |
| 2003 | 18,332 | 187,738 | 41.9% | — |
| 2002 | 16,213 | 164,935 | 37.0% | — |
| 2001 | 16,401 | 169,472 | 37.5% | — |
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.