Longfalls Facility
Lathrop Street, West Carthage, NY 13619Plant Summary Information
Longfalls Facility is ranked #119 out of 148 hydroelectric power plants in New York in terms of total annual net electricity generation.
Longfalls Facility is comprised of 1 generator and generated 1.3 GWh during the 3-month period between September 2025 to December 2025.
| Plant Name | Longfalls Facility |
|---|---|
| Utility Name | Ampersand Long Falls Hydro, LLC |
| Location | Jefferson County, NY |
| Initial Operation Date | October 1991 |
| Last Update | Dec 2025 |
| Annual Generation | 5.4 GWh |
| Annual Consumption | 18.6 k MMBtu |
| Ranked #8,069 out of 13,081 Power Plants Nationwide | |
| Ranked #1,066 out of 1,311 Water Power Plants Nationwide | |
| Ranked #563 out of 1,045 New York Power Plants | |
| Ranked #119 out of 148 New York Water Power Plants | |
| Fuel Types | Water |
| Previous Operator |
Fourth Branch Assoc-Long Fall (2013 to 2014) Ampersand Long Falls Hydro, LLC (2015 to 2025) |
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Monthly Net Generation for Longfalls Facility
Monthly Plant Fuel Consumption for Longfalls Facility
Longfalls Facility Details
| Summary Information | |
|---|---|
| Plant Name | Longfalls Facility (54548) |
| Plant Address | Lathrop Street, West Carthage, NY 13619 |
| Utility | Ampersand Long Falls Hydro, LLC (59827) |
| Latitude, Longitude | 43.98081, -75.62468 |
| Generation Dates on File | Jan 2003 to Dec 2025 |
| Initial Operation Date | October 1991 |
| Annual Generation | 5.4 GWh |
| Fuel Types | Water |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | Yes |
| FERC Small Power Producer Docket Number | 90-108-000 |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Non-Regulated |
| NERC Region | NPCC |
| Balancing Authority | New York Independent System Operator (NYIS) |
| NAICS Code | Utilities (22) |
| Sector | IPP Non-CHP (2) |
| Water Source | Black River |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Niagara Mohawk Power Corp. (13573) NY |
| Grid Voltage | 23.00 kV |
| Energy Storage | No |
Generator 1 Details Operating October 1991
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 3.3 MW |
| Nameplate Power Factor | 1 |
| Summer Capacity | 3 MW |
| Winter Capacity | 3 MW |
| Minimum Load | 1 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | October 1991 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Time From Cold Shutdown To Full Load | 10M |
| Multiple Fuels | No |
Longfalls Facility Plant Owners
| Owner Name | Address | Ownership | We couldn't locate any owners for this plant |
|---|
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Water.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #1056 | Gantt | Andalusia, AL | 5.7 GWh |
| #1057 | South Fork | Klawock, AK | 5.6 GWh |
| #1058 | Drop 5 (CA) | Calexico, CA | 5.6 GWh |
| #1059 | Newport Hydro Station | Newport, VA | 5.6 GWh |
| #1060 | Newport Hydro | Newport, NY | 5.6 GWh |
| #1061 | Valley Falls Hydroelectric Facility | Valley Falls, NY | 5.6 GWh |
| #1062 | Dwight | Chicopee, MA | 5.6 GWh |
| #1063 | Arpin Dam | Radisson, WI | 5.5 GWh |
| #1064 | Big Creek Water Works | Hyampom, CA | 5.5 GWh |
| #1065 | Emporia | Emporia, VA | 5.5 GWh |
| #1067 | Crystal Falls | Crystal Falls, MI | 5.4 GWh |
| #1068 | Quinebaug Lower Project | Brooklyn, CT | 5.4 GWh |
| #1069 | Sugarloaf Hydro Plant | Leadville, CO | 5.4 GWh |
| #1070 | Lilliwaup Falls Generating | Lilliwaup, WA | 5.3 GWh |
| #1071 | Metropolitan Sewerage District | Asheville, NC | 5.3 GWh |
| #1072 | Mile 28 Water Power Project | Eden, ID | 5.3 GWh |
| #1073 | Granby Hydro | Granby, CO | 5.3 GWh |
| #1074 | Stiles | Oconto Falls, WI | 5.3 GWh |
| #1075 | Mottville | White Pigeon, MI | 5.3 GWh |
| #1076 | Silver Lake (VT) | Salisbury, VT | 5.2 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Longfalls Facility.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Black River | Black River, NY | 32.5 GWh | 9.5 mi |
| Carthage A | Carthage, NY | 7.6 GWh | 2.2 mi |
| Carthage B | Carthage, NY | 5.3 GWh | 1.9 mi |
| Carthage Energy LLC | Carthage, NY | 6.7 GWh | 0.3 mi |
| CH Resources Beaver Falls | Beaver Falls, NY | 11.7 GWh | 11.5 mi |
| Copenhagen Plant | Copenhagen, NY | 7.0 GWh | 5.9 mi |
| Copenhagen Solar | Copenhagen, NY | 5.1 GWh | 9.4 mi |
| Copenhagen Wind Farm | Copenhagen, NY | 250.2 GWh | 6 mi |
| Deferiet | Deferiet, NY | 40.2 GWh | 4.8 mi |
| Diamond Island Plant | Watertown, NY | 1.8 GWh | 13 mi |
| Herrings | Carthage, NY | 18.4 GWh | 3.1 mi |
| Kamargo | Black River, NY | 21.3 GWh | 8.8 mi |
| Kings Falls Hydroelectric | Copenhagen, NY | 2.0 GWh | 4.4 mi |
| Lower Beaver Falls Project | Beaver Falls, NY | 3.2 GWh | 11.7 mi |
| Number Three Wind Project | Lowville, NY | 277.6 GWh | 10.1 mi |
| NY 26 Carthage CSG | Carthage, NY | 6.9 GWh | 1.8 mi |
| Philadlephia | Village of Philadelph, NY | 8.6 GWh | 13 mi |
| St. Lawrence University - Sutton | Watertown, NY | 2.4 GWh | 12.8 mi |
| Upper Beaver Falls Project | Beaver Falls, NY | 9.5 GWh | 11.9 mi |
| Watertown | Watertown, NY | 19.2 GWh | 12.4 mi |