Marathon Solar Farm LLC South
Madison County, New York · EIA plant ID 66734 · Operator: distributed solar development, llc
Nameplate4MWSummer 4 MW
Generators1in service
Net generation6GWh12 mo to Dec 2025
Capacity factor15%solar units, summer MW
Heat rate—thermal plants only
First online2020
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), solar 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) |
|---|---|---|---|
| 2022 | 0 | 0.0% | — |
| 2023 | 6.6 | 17.1% | — |
| 2024 | 6.4 | 16.5% | — |
| 2025 | 5.8 | 15.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| P4739 | Solar Photovoltaic | PV | 4.4 | 4.4 | Dec 2020 | Operating | — | coming soon |
Owner / operator
Operator: distributed solar development, llc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| distributed solar development, llc | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Marathon Solar Farm II LLC North | 3 MW | 0 km |
| Owlville Creek Solar 2, LLC | 8 MW | 3.1 km |
| Twin Lantern Solar Project | 1 MW | 3.5 km |
| Owlville Creek Solar, LLC | 8 MW | 3.6 km |
| Lenox Renewables | 3 MW | 4.5 km |
| Waste Management Madison County LFGTE | retired | 6.1 km |