Winterberry Solar
Gloucester County, Virginia · EIA plant ID 68775 · Operator: Dominion Energy Inc
Nameplate20MWSummer 20 MW
Generators1in service
Net generation36GWh12 mo to Dec 2025
Capacity factor21%solar units, summer MW
Heat rate—thermal plants only
First online2023
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) |
|---|---|---|---|
| 2024 | 41.1 | 23.4% | — |
| 2025 | 36.1 | 20.6% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| WNTB | Solar Photovoltaic | PV | 20 | 20 | Nov 2023 | Operating | — | coming soon |
Owner / operator
Operator: Dominion Energy Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Dominion Energy Inc | 100.0% | 20 MW |
Nearby plants
Within 80 km.
| Gloucester Solar | 20 MW | 12.3 km |
| Yorktown | retired | 17.3 km |
| Waste Management Middle Peninsula LFGTE | 6 MW | 19.6 km |
| Rochambeau Solar | 20 MW | 20.4 km |
| Norge Solar Farm | 20 MW | 21.7 km |
| Carvers Creek Solar | 154 MW | 23.4 km |