Oneida - South
Oneida County, New York · EIA plant ID 60455 · Operator: Madison Energy Investments LLC
Nameplate2MWSummer 2 MW
Generators1in service
Net generation2GWh12 mo to Dec 2025
Capacity factor12%solar units, summer MW
Heat rate—thermal plants only
First online2015
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) |
|---|---|---|---|
| 2016 | 1.1 | 6.3% | — |
| 2017 | 2.6 | 15.5% | — |
| 2018 | 2.7 | 16.3% | — |
| 2019 | 2.7 | 16.1% | — |
| 2020 | 2.9 | 17.2% | — |
| 2021 | 2.6 | 15.7% | — |
| 2022 | 2.5 | 14.9% | — |
| 2023 | 2.3 | 14.0% | — |
| 2024 | 2.5 | 14.9% | — |
| 2025 | 2 | 12.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| ONS | Solar Photovoltaic | PV | 1.9 | 1.9 | Dec 2015 | Operating | — | coming soon |
Owner / operator
Operator: Madison Energy Investments LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Madison Energy Investments LLC | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Oneida - West | 2 MW | 1.5 km |
| Oneida County- DPW | 2 MW | 2.1 km |
| Judd Road Solar | 5 MW | 3.5 km |
| Time Warner Cable Enterprises - Martino | 2 MW | 4 km |
| Reid Solar | 5 MW | 4.4 km |
| NY USLE Rome-Oriskany | 4 MW | 4.4 km |