Grahamsville
1229 State Rte. 55A, Grahamsville, NY 12740Plant Summary Information
Grahamsville is ranked #11 out of 148 hydroelectric power plants in New York in terms of total annual net electricity generation.
Grahamsville is comprised of 1 generator and generated 27.0 GWh during the 3-month period between September 2025 to December 2025.
| Plant Name | Grahamsville |
|---|---|
| Utility Name | New York Power Authority |
| Location | Sullivan County, NY |
| Initial Operation Date | January 1956 |
| Last Update | Dec 2025 |
| Annual Generation | 85.1 GWh |
| Annual Consumption | 311.3 k MMBtu |
| Ranked #3,684 out of 13,081 Power Plants Nationwide | |
| Ranked #362 out of 1,311 Water Power Plants Nationwide | |
| Ranked #98 out of 1,045 New York Power Plants | |
| Ranked #11 out of 148 New York Water Power Plants | |
| Fuel Types | Water |
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Monthly Net Generation for Grahamsville
Monthly Plant Fuel Consumption for Grahamsville
Grahamsville Details
| Summary Information | |
|---|---|
| Plant Name | Grahamsville (2627) |
| Plant Address | 1229 State Rte. 55A, Grahamsville, NY 12740 |
| Utility | New York Power Authority (15296) |
| Latitude, Longitude | 41.8592, -74.5106 |
| Generation Dates on File | Jan 2001 to Dec 2025 |
| Initial Operation Date | January 1956 |
| Annual Generation | 85.1 GWh |
| Fuel Types | Water |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | NPCC |
| Balancing Authority | New York Independent System Operator (NYIS) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Pepatcon Reservoir |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Central Hudson Gas & Elec Corp (3249) NY |
| Grid Voltage | 69.00 kV |
| Energy Storage | No |
Generator GRHM Details Operating January 1956
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Wholly Owned by Other Entity |
| Nameplate Capacity | 18 MW |
| Nameplate Power Factor | 1 |
| Summer Capacity | 18 MW |
| Winter Capacity | 18 MW |
| Minimum Load | 1 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | January 1956 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 10M |
Grahamsville Plant Owners
| Owner Name | Address | Ownership |
|---|---|---|
| City of New York | One Centre Street, 22nd Floor, New York, NY 10007 | 100.00% |
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Water.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #352 | Laurel Dam | London, KY | 88.8 GWh |
| #353 | Navajo Dam | Farmington, NM | 88.3 GWh |
| #354 | Goat Rock | Smiths, AL | 88.1 GWh |
| #355 | Smith (NH) | Berlin, NH | 87.5 GWh |
| #356 | Monroe Street | Spokane, WA | 87.5 GWh |
| #357 | Smith Falls Hydro Project | Bonners Ferry, ID | 87.2 GWh |
| #358 | Degray | Arkadelphia, AR | 86.8 GWh |
| #359 | Oxford Dam | Conover, NC | 86.5 GWh |
| #360 | Allegheny Hydro No 9 | Cowansville, PA | 86.4 GWh |
| #361 | Anderson Ranch | Mountain Home, ID | 85.8 GWh |
| #363 | Sullivan | West Linn, OR | 84.6 GWh |
| #364 | Seminoe | Sinclair, WY | 84.5 GWh |
| #365 | Rainbow Falls Hydro | Parishville, NY | 84.1 GWh |
| #366 | Castle Rock | Adams, WI | 83.3 GWh |
| #367 | Grace | Grace, ID | 82.7 GWh |
| #368 | Sand Bar Power Plant | Stanislaus Ntl. Fores, CA | 82.5 GWh |
| #369 | Lookout Shoals | Statesville, NC | 82.5 GWh |
| #370 | Lake Dorothy Hydroelectric Project | Juneau, AK | 81.7 GWh |
| #371 | Kaw Hydro | Ponca City, OK | 81.2 GWh |
| #372 | Jeffrey | Brady, NE | 81.0 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Grahamsville.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| 6140 Route 209 - North | Kerhonkson, NY | 6.5 GWh | 12.4 mi |
| Ashokan | Kingston, NY | 11.1 GWh | 16.8 mi |
| Barone | Wurtsboro, NY | 5.6 GWh | 18.4 mi |
| BQ - Psychedelic Site CSG | Swan Lake, NY | 4.2 GWh | 17.8 mi |
| CES Marbletown Solar | Marbletown, NY | 5.0 GWh | 21.1 mi |
| DOCCS Eastern | Wawarsing, NY | 8.3 GWh | 11.1 mi |
| Dubois Solar (Hybrid) | Pine Bush, NY | 3.1 GWh | 21.4 mi |
| Frog Hollow CSG | Ellenville, NY | 1.8 GWh | 8.3 mi |
| Harris (NY) | Liberty, NY | 2.9 GWh | 13.1 mi |
| High Falls | High Falls, NY | 4.9 GWh | 19.6 mi |
| Kelly Bridge Road Community Solar Farm | Liberty, NY | 2.9 GWh | 14.9 mi |
| Kenmare - Sullivan Community College | Sheldrake, NY | 2.3 GWh | 10 mi |
| Neversink | Grahmsville, NY | 11.6 GWh | 7 mi |
| New Beginnings Solar | Kingston, NY | 2.8 GWh | 21.6 mi |
| Off Airport Road - West | Accord, NY | 6.4 GWh | 15.4 mi |
| Old Route 17 | Harris, NY | 5.0 GWh | 14.2 mi |
| Reisender Solar | Ellenville, NY | 3.0 GWh | 8 mi |
| Rosemond Solar Community Solar | Fallsburg, NY | 3.2 GWh | 10.3 mi |
| Sullivan County - Adult Care Solar | Liberty, NY | 2.3 GWh | 11 mi |
| West Delaware Tunnel Plant | Grahamsville, NY | 33.9 GWh | 0 mi |