Kosterville
Lewis County, New York · EIA plant ID 56705 · Operator: Northbrook Lyons Falls LLC
Nameplate1MWSummer 1 MW
Generators2in service
Net generation2GWh12 mo to Dec 2025
Capacity factor21%hydro units, summer MW
Heat rate—thermal plants only
First online1955
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) |
|---|---|---|---|
| 2008 | 3.2 | 36.4% | — |
| 2009 | 3.1 | 35.8% | — |
| 2010 | 3 | 34.3% | — |
| 2011 | 4.1 | 46.5% | — |
| 2012 | 4 | 45.2% | — |
| 2013 | 4 | 45.5% | — |
| 2014 | 3.2 | 36.9% | — |
| 2015 | 3.4 | 39.1% | — |
| 2016 | 2.5 | 28.9% | — |
| 2017 | 3.2 | 36.6% | — |
| 2018 | 1.6 | 18.5% | — |
| 2019 | 2.2 | 24.8% | — |
| 2020 | 2.3 | 25.9% | — |
| 2021 | 2.8 | 32.4% | — |
| 2022 | 0.8 | 8.7% | — |
| 2023 | 2.5 | 29.0% | — |
| 2024 | 2.3 | 26.2% | — |
| 2025 | 1.8 | 20.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 4 | Conventional Hydroelectric | HY | 0.5 | 0.5 | May 1955 | Operating | — | coming soon |
| 5 | Conventional Hydroelectric | HY | 0.5 | 0.5 | Oct 1958 | Operating | — | coming soon |
Owner / operator
Operator: Northbrook Lyons Falls LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Northbrook Lyons Falls LLC | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| Gouldtown | 2 MW | 0.5 km |
| Moose River | 13 MW | 0.8 km |
| Lyons Falls Hydroelectric | 6 MW | 2.1 km |
| Lyonsdale Associates | 3 MW | 2.3 km |
| Black River Hydro Associates | 6 MW | 2.7 km |
| Port Leyden Hydroelectric Project | 1 MW | 3.4 km |