Lempster Wind LLC
Sullivan County, New Hampshire · EIA plant ID 56399 · Operator: Avangrid Renewables Inc
Nameplate24MWSummer 24 MW
Generators1in service
Net generation63GWh12 mo to Aug 2026
Capacity factor30%wind units, summer MW
Heat rate—thermal plants only
First online2008
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) |
|---|---|---|---|
| 2008 | 10.3 | 57.8% | — |
| 2009 | 62.5 | 29.7% | — |
| 2010 | 75.7 | 36.0% | — |
| 2011 | 66.1 | 31.4% | — |
| 2012 | 63.7 | 30.2% | — |
| 2013 | 69.6 | 33.1% | — |
| 2014 | 66.6 | 31.7% | — |
| 2015 | 68.1 | 32.4% | — |
| 2016 | 69 | 32.7% | — |
| 2017 | 64.3 | 30.6% | — |
| 2018 | 61.6 | 29.3% | — |
| 2019 | 66.5 | 31.6% | — |
| 2020 | 67.7 | 32.1% | — |
| 2021 | 61.8 | 29.4% | — |
| 2022 | 62.8 | 29.8% | — |
| 2023 | 55.6 | 26.5% | — |
| 2024 | 61.4 | 29.1% | — |
| 2025 | 67.7 | 32.2% | — |
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 | 24 | 24 | Dec 2008 | Operating | — | gamesa G87-2.0 |
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% | 24 MW |
Nearby plants
Within 80 km.
| Jackman | 3 MW | 21 km |
| Antrim Wind | 29 MW | 21.9 km |
| Kearsarge Grissom | 4 MW | 22.5 km |
| Lower Village Water Power Project | 1 MW | 22.7 km |
| Hillsborough Hosiery | 1 MW | 24.3 km |
| Springfield Power LLC | 20 MW | 24.4 km |