St. Charles Solar
Winona County, Minnesota · EIA plant ID 62869 · Operator: Green Street Power Partners
Nameplate2MWSummer 2 MW
Generators1in service
Net generation3GWh12 mo to Dec 2025
Capacity factor19%solar units, summer MW
Heat rate—thermal plants only
First online2019
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) |
|---|---|---|---|
| 2019 | 0.5 | 9.2% | — |
| 2020 | 3.7 | 20.8% | — |
| 2021 | 3.5 | 19.9% | — |
| 2022 | 3.1 | 17.5% | — |
| 2023 | 3.1 | 17.9% | — |
| 2024 | 3.3 | 18.5% | — |
| 2025 | 3.4 | 19.4% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| STC10 | Solar Photovoltaic | PV | 2 | 2 | Sep 2019 | Operating | — | coming soon |
Owner / operator
Operator: Green Street Power Partners. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Green Street Power Partners | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| St. Charles Power Plant | 9 MW | 2.2 km |
| GL Wind | 5 MW | 12.5 km |
| Winona Garden | 1 MW | 16.7 km |
| Winona County Wind LLC | 2 MW | 17.4 km |
| Novel Herber Solar CSG | 1 MW | 18.6 km |
| Winona Solar | 1 MW | 19.5 km |