Palmetto Plains
Orangeburg County, South Carolina · EIA plant ID 62679 · Operator: Cubico USA, LLC
Nameplate75MWSummer 75 MW
Generators1in service
Net generation126GWh12 mo to Aug 2026
Capacity factor19%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 | 63 | 19.0% | — |
| 2020 | 158.1 | 24.0% | — |
| 2021 | 160.2 | 24.4% | — |
| 2022 | 138.8 | 21.1% | — |
| 2023 | 129 | 19.6% | — |
| 2024 | 118.3 | 17.9% | — |
| 2025 | 126.1 | 19.2% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1405 | Solar Photovoltaic | PV | 75 | 75 | Jul 2019 | Operating | — | coming soon |
Owner / operator
Operator: Cubico USA, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Cubico USA, LLC | 100.0% | 75 MW |
Nearby plants
Within 80 km.
| TWE Bowman Solar Project | 75 MW | 3 km |
| Huntley | 75 MW | 5.9 km |
| Substation 20 Plant | 2 MW | 17.4 km |
| Rowesville Rd Plant | 10 MW | 17.6 km |
| SR Cordova | — | 22.2 km |
| Bull Street Plant | 2 MW | 23.1 km |