Buttercup Solar, LLC
Duplin County, North Carolina · EIA plant ID 64002 · Operator: Sol Systems
Nameplate5MWSummer 5 MW
Generators1in service
Net generation11GWh12 mo to Dec 2025
Capacity factor24%solar units, summer MW
Heat rate—thermal plants only
First online2020
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) |
|---|---|---|---|
| 2020 | 0.6 | 8.6% | — |
| 2021 | 11 | 25.0% | — |
| 2022 | 11 | 25.1% | — |
| 2023 | 10.9 | 24.9% | — |
| 2024 | 10.5 | 24.0% | — |
| 2025 | 10.6 | 24.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 11629 | Solar Photovoltaic | PV | 5 | 5 | Nov 2020 | Operating | — | coming soon |
Owner / operator
Operator: Sol Systems. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Sol Systems | 100.0% | 5 MW |
Nearby plants
Within 80 km.
| Town of Cary | 2 MW | 0.3 km |
| Rose Hill | 2 MW | 0.3 km |
| Hall Solar Energy Storage | 5 MW | 3.6 km |
| Hickory | 5 MW | 4.1 km |
| Aspen Solar, LLC | 5 MW | 5.1 km |
| Nickelson Solar, LLC | 5 MW | 8.6 km |