Groton Wind LLC
Grafton County, New Hampshire · EIA plant ID 58141 · Operator: Avangrid Renewables Inc
Nameplate48MWSummer 48 MW
Generators1in service
Net generation105GWh12 mo to Aug 2026
Capacity factor25%wind units, summer MW
Heat rate—thermal plants only
First online2012
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), wind units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2012 | 6.3 | 17.7% | — |
| 2013 | 97.6 | 23.2% | — |
| 2014 | 108.4 | 25.8% | — |
| 2015 | 114.8 | 27.3% | — |
| 2016 | 121.4 | 28.8% | — |
| 2017 | 113 | 26.9% | — |
| 2018 | 105.2 | 25.0% | — |
| 2019 | 107.7 | 25.6% | — |
| 2020 | 106.7 | 25.3% | — |
| 2021 | 114.1 | 27.1% | — |
| 2022 | 111.2 | 26.5% | — |
| 2023 | 101.8 | 24.2% | — |
| 2024 | 102.4 | 24.3% | — |
| 2025 | 114.7 | 27.3% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Onshore Wind Turbine | WT | 48 | 48 | Dec 2012 | Operating | — | gamesa G78-2.0 |
Owner / operator
Operator: Avangrid Renewables Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Avangrid Renewables Inc | 100.0% | 48 MW |
Nearby plants
Within 80 km.
| Plymouth State College Cogeneration | 3 MW | 10.5 km |
| Bridgewater Power LP | 20 MW | 14.2 km |
| Ayers Island | 8 MW | 20.6 km |
| Newfound Hydroelectric | 1 MW | 21 km |
| Indeck Energy-Alexandria | retired | 23.3 km |
| Smith (VT) | 2 MW | 35.1 km |