- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Effley: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Effley
Power plant · Hydro
Key facts
Power plant · Hydroran 52% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1902
- Net generation, 2025
- 13,755 MWh
- Grid
- 23 kV to Niagara Mohawk Power Corp. (NYIS)
- Location
- Lewis County, New York
- Operated by
- Erie Boulevard Hydropower LPSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 13,755
MWh - Fuel burned, 2025
- 46,933
MMBtu - Capacity factor, 2025
- 52.3
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 13,755 | 46,933 | 52.3% | — |
| 2024 | 14,519 | 49,538 | 55.1% | — |
| 2023 | 16,581 | 56,576 | 63.1% | — |
| 2022 | 15,912 | 54,293 | 60.6% | — |
| 2021 | 13,743 | 121,543 | 52.3% | — |
| 2020 | 12,060 | 105,729 | 45.8% | — |
| 2019 | 19,684 | 175,286 | 74.9% | — |
| 2018 | 16,672 | 151,782 | 63.4% | — |
| 2017 | 19,217 | 177,045 | 73.1% | — |
| 2016 | 14,022 | 129,450 | 53.2% | — |
| 2015 | 12,954 | 120,718 | 49.3% | — |
| 2014 | 18,284 | 173,881 | 69.6% | — |
| 2013 | 15,718 | 149,967 | 59.8% | — |
| 2012 | 12,908 | 122,833 | 49.0% | — |
| 2011 | 17,059 | 165,746 | 64.9% | — |
| 2010 | 14,506 | 141,520 | 55.2% | — |
| 2009 | 17,654 | 172,301 | 67.2% | — |
| 2008 | 15,857 | 156,254 | 60.2% | — |
| 2007 | 14,624 | 144,546 | 55.6% | — |
| 2006 | 17,485 | 173,433 | 66.5% | — |
| 2005 | 12,737 | 127,357 | 48.5% | — |
| 2004 | 3,954 | 39,627 | 15.0% | — |
| 2003 | 15,006 | 153,676 | 57.1% | — |
| 2002 | 18,264 | 185,800 | 69.5% | — |
| 2001 | 21,852 | 225,797 | 83.2% | — |
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.