Green Island Hydroelectric Station
Albany County, New York · EIA plant ID 61207 · Operator: Albany Engineering Corporation
Nameplate6MWSummer 6 MW
Generators4in service
Net generation38GWh12 mo to Dec 2025
Capacity factor73%hydro units, summer MW
Heat rate—thermal plants only
First online1922
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), hydro 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) |
|---|---|---|---|
| 2016 | 35.4 | 67.1% | — |
| 2017 | 41.1 | 78.3% | — |
| 2018 | 39.8 | 75.7% | — |
| 2019 | 40.1 | 76.4% | — |
| 2020 | 38.4 | 72.8% | — |
| 2021 | 44.9 | 85.3% | — |
| 2022 | 38.8 | 73.9% | — |
| 2023 | 44.4 | 84.5% | — |
| 2024 | 37.4 | 70.9% | — |
| 2025 | 38.2 | 72.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| UNIT1 | Conventional Hydroelectric | HY | 1.5 | 1.5 | Nov 1922 | Operating | — | coming soon |
| UNIT2 | Conventional Hydroelectric | HY | 1.5 | 1.5 | Nov 1922 | Operating | — | coming soon |
| UNIT3 | Conventional Hydroelectric | HY | 1.5 | 1.5 | Nov 1922 | Operating | — | coming soon |
| UNIT4 | Conventional Hydroelectric | HY | 1.5 | 1.5 | Nov 1922 | Operating | — | coming soon |
Owner / operator
Operator: Albany Engineering Corporation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Albany Engineering Corporation | 100.0% | 6 MW |
Nearby plants
Within 80 km.
| Mt Ida Hydroelectric | 3 MW | 3.1 km |
| Belair | 4 MW | 3.6 km |
| New York State Dam Hydro | 11 MW | 3.8 km |
| North Troy | 4 MW | 4.3 km |
| School Street | 39 MW | 4.3 km |
| Fourth Branch Hydroelectric Facility | 3 MW | 4.4 km |