Seabrook Solar
Beaufort County, South Carolina · EIA plant ID 61701 · Operator: Dominion Energy Inc
Nameplate73MWSummer 73 MW
Generators1in service
Net generation128GWh12 mo to Aug 2026
Capacity factor20%solar units, summer MW
Heat rate—thermal plants only
First online2019
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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 | 4.5 | 8.4% | — |
| 2020 | 150 | 23.5% | — |
| 2021 | 151 | 23.8% | — |
| 2022 | 134.6 | 21.2% | — |
| 2023 | 104.2 | 16.4% | — |
| 2024 | 76.9 | 12.1% | — |
| 2025 | 92.6 | 14.6% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Solar Photovoltaic | PV | 72.5 | 72.5 | Dec 2019 | 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% | 73 MW |
Nearby plants
Within 80 km.
| Trask East Solar | 12 MW | 10.5 km |
| SCE&G Nimitz CSG | 8 MW | 21.4 km |
| Yemassee Solar | 10 MW | 21.7 km |
| Ridgeland Solar Project | 10 MW | 23.3 km |
| Moffett Solar Project | 71 MW | 24.6 km |
| MCRD Parris Island PV Hybrid | 17 MW | 26.5 km |