Mascoma Hydro
189 South Main St, W. Lebanon, NH 3766Plant Summary Information
Mascoma Hydro is ranked #32 out of 32 hydroelectric power plants in New Hampshire in terms of total annual net electricity generation.
Mascoma Hydro is comprised of 3 generators and generated 46.0 MWh during the 3-month period between September 2025 to December 2025.
| Plant Name | Mascoma Hydro |
|---|---|
| Utility Name | Green Mountain Power Corp |
| Location | Grafton County, NH |
| Initial Operation Date | December 1988 |
| Last Update | Dec 2025 |
| Annual Generation | 202.0 MWh |
| Annual Consumption | 809 MMBtu |
| Ranked #12,543 out of 13,081 Power Plants Nationwide | |
| Ranked #1,302 out of 1,311 Water Power Plants Nationwide | |
| Ranked #57 out of 57 New Hampshire Power Plants | |
| Ranked #32 out of 32 New Hampshire Water Power Plants | |
| Fuel Types | Water |
| Previous Operator |
Mascoma Hydro Corp (2013 to 2017) Green Mountain Power Corp (2018 to 2025) |
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Monthly Net Generation for Mascoma Hydro
Monthly Plant Fuel Consumption for Mascoma Hydro
Mascoma Hydro Details
| Summary Information | |
|---|---|
| Plant Name | Mascoma Hydro (54471) |
| Plant Address | 189 South Main St, W. Lebanon, NH 3766 |
| Utility | Green Mountain Power Corp (7601) |
| Latitude, Longitude | 43.63369, -72.31744 |
| Generation Dates on File | Jan 2001 to Dec 2025 |
| Initial Operation Date | December 1988 |
| Annual Generation | 202.0 MWh |
| 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 | 05-135 |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | NPCC |
| Balancing Authority | ISO New England Inc. (ISNE) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Mascoma River |
| Ash Impoundment | |
| Transmission / Distribution Owner | New Hampshire Elec Coop Inc (13441) NH |
| Grid Voltage | 12.40 kV |
| Energy Storage | No |
Generator 01 Details Operating December 1988
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Wholly Owned by Other Entity |
| Nameplate Capacity | 0.5 MW |
| Nameplate Power Factor | 1 |
| Summer Capacity | 0.5 MW |
| Winter Capacity | 0.5 MW |
| Minimum Load | 0.1 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | December 1988 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Time From Cold Shutdown To Full Load | 10M |
Generator 02 Details Operating December 1988
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Wholly Owned by Other Entity |
| Nameplate Capacity | 0.5 MW |
| Nameplate Power Factor | 1 |
| Summer Capacity | 0.5 MW |
| Winter Capacity | 0.5 MW |
| Minimum Load | 0.1 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | December 1988 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Time From Cold Shutdown To Full Load | 10M |
Generator 03 Details Operating December 1988
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Wholly Owned by Other Entity |
| Nameplate Capacity | 0.5 MW |
| Nameplate Power Factor | 1 |
| Summer Capacity | 0.5 MW |
| Winter Capacity | 0.5 MW |
| Minimum Load | 0.1 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | December 1988 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Time From Cold Shutdown To Full Load | 10M |
Mascoma Hydro Plant Owners
| Owner Name | Address | Generator | Ownership |
|---|---|---|---|
| Enel North America, Inc. | One Tech Drive, Andover, MA 1810 | Generator 01 | 100.00% |
| Enel North America, Inc. | One Tech Drive, Andover, MA 1810 | Generator 02 | 100.00% |
| Enel North America, Inc. | One Tech Drive, Andover, MA 1810 | Generator 03 | 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 |
|---|---|---|---|
| #1291 | Squa Pan Hydro Station | Masardis, ME | 564.0 MWh |
| #1292 | Niangua | Camdenton, MO | 536.0 MWh |
| #1293 | Domtar Paper Company Rothschild | Rothschild, WI | 524.0 MWh |
| #1294 | Spartanburg Water System | Chesnee, SC | 620.0 MWh |
| #1295 | Somersworth Lower Great Dam | Somersworth, NH | 498.0 MWh |
| #1296 | Rocky Brook Hydroelectric | Brinnon, WA | 464.0 MWh |
| #1297 | Kalaheo Hydro | Kalaheo, HI | 461.0 MWh |
| #1298 | Barron | Barron, WI | 382.0 MWh |
| #1299 | Kearney | Kearney, NE | 375.0 MWh |
| #1300 | Wrightsville Hydro Plant | Montpelier, VT | 374.0 MWh |
| #1301 | Georgia-Pacific Big Island | Big Island, VA | 38.8 GWh |
| #1303 | Argyle | Argyle, WI | 193.0 MWh |
| #1304 | Lanesboro | Lanesboro, MN | 140.0 MWh |
| #1305 | Rock Creek I | Twin Falls, ID | 86.0 MWh |
| #1306 | Boise R Diversion | Boise, ID | 73.0 MWh |
| #1307 | GeoBon II | Shoshone, ID | 54.0 MWh |
| #1308 | Turner Shoals | Mill Springs, NC | 52.0 MWh |
| #1309 | Spaulding 2 | Emigrant Gap, CA | 21.0 MWh |
| #1310 | Spalding | Spalding, NE | 3.0 MWh |
| #1311 | Canyon | Canyon Lake, TX | 1.0 MWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Mascoma Hydro.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Ascutney | Weatherfield, VT | 437.0 MWh | 16.9 mi |
| Ayers Island | Bristol, NH | 36.3 GWh | 30.1 mi |
| Cavendish | Cavendish, VT | 1.4 GWh | 22.4 mi |
| Chester Power Partners | North Chester, VT | 2.4 GWh | 28.1 mi |
| Cold River Road Solar | North Clarendon, VT | 3.2 GWh | 31.9 mi |
| Coolidge Solar 1, LLC | Ludlow, VT | 24.9 GWh | 22.6 mi |
| Dartmouth College Heating Plant | Hanover, NH | 10.6 GWh | 5 mi |
| Deweys Mill | White River Jct., VT | 1.7 GWh | 4.5 mi |
| Elizabeth Mines Solar 1 | So. Strafford, VT | 6.7 GWh | 13.1 mi |
| GMP Solar - Hartford | Hartford, VT | 6.9 GWh | 5.1 mi |
| Groton Wind LLC | Groton, NH | 101.4 GWh | 26.6 mi |
| Lempster Wind LLC | Lempster, NH | 61.8 GWh | 29 mi |
| Lower Village Water Power Project | Claremont, NH | 3.5 GWh | 18 mi |
| NE Renewable Springfield, LLC | Springfield, NH | 73.3 GWh | 18.6 mi |
| Newfound Hydroelectric | Bristol, NH | 3.8 GWh | 29.4 mi |
| Ottauquechee Hydro | N. Hartland, VT | 2.8 GWh | 3.2 mi |
| Smith (VT) | Bradford, VT | 1.8 GWh | 26.5 mi |
| Stafford Hill Solar Hybrid | Rutland, VT | 390.0 MWh | 31.7 mi |
| SunGen Sharon 1 LLC | Sharon, VT | 2.4 GWh | 14.1 mi |
| Wilder | Hartford, VT | 134.4 GWh | 2.5 mi |