Clark Solar-Longwood
Clark County, Wisconsin · EIA plant ID 69933 · Operator: OneEnergy, Inc.
Nameplate3MWSummer 3 MW
Generators1in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online2026
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
No capacity factor available.
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.
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 |
|---|---|---|---|---|---|---|---|---|
| CLARK | Solar Photovoltaic | PV | 2.5 | 2.5 | Sep 2026 | Operating | — | coming soon |
Owner / operator
Operator: OneEnergy, Inc.. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| OneEnergy, Inc. | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Popple Creek (Clark 1) | 2 MW | 17.5 km |
| Wolf River (Chipewa 1) | 2 MW | 24.2 km |
| Gilman | — | 27.1 km |
| Medford DPC Solar | 2 MW | 34.4 km |
| Hannibal | 3 MW | 37.7 km |
| Little Rose Solar WI, LLC | — | 44 km |