Marble River Wind Farm
Clinton County, New York · EIA plant ID 56857 · Operator: Marble River, LLC
Nameplate215MWSummer 215 MW
Generators1in service
Net generation478GWh12 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 | 85.5 | 27.2% | — |
| 2013 | 511.4 | 27.2% | — |
| 2014 | 526.7 | 28.0% | — |
| 2015 | 541.7 | 28.8% | — |
| 2016 | 522.1 | 27.7% | — |
| 2017 | 540.3 | 28.7% | — |
| 2018 | 486.8 | 25.9% | — |
| 2019 | 519.8 | 27.6% | — |
| 2020 | 488 | 25.8% | — |
| 2021 | 441.4 | 23.4% | — |
| 2022 | 441.4 | 23.4% | — |
| 2023 | 384.1 | 20.4% | — |
| 2024 | 386.3 | 20.4% | — |
| 2025 | 495.4 | 26.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Onshore Wind Turbine | WT | 215.3 | 215.3 | Nov 2012 | Operating | — | vestas V112-3.0 |
Owner / operator
Operator: Marble River, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Marble River, LLC | 100.0% | 215 MW |
Nearby plants
Within 80 km.
| NSF Chateaugay Site 1 | 5 MW | 9.5 km |
| NSF Chateaugay Site 2 | 4 MW | 9.9 km |
| Noble Clinton Windpark LLC | 101 MW | 11.1 km |
| Noble Ellenburg Windpark LLC | 81 MW | 11.1 km |
| Adirondack Solar | 1 MW | 11.5 km |
| Noble Chateaugay Windpark LLC | 107 MW | 12.2 km |