Mauna Loa Macadamia Nut
Hawaii County, Hawaii · EIA plant ID 68605 · Operator: Macadamia Nut Road Solar Project 2019
Nameplate1MWSummer 1 MW
Generators2in service
Net generation1GWh12 mo to Dec 2025
Capacity factor21%solar units, summer MW
Heat rate—thermal plants only
First online2021
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 | 1.4 | 19.6% | — |
| 2025 | 1.4 | 20.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 3146B | Batteries | BA | 0.5 | 0.5 | Dec 2021 | Operating | — | coming soon |
| 3146G | Solar Photovoltaic | PV | 0.8 | 0.8 | Dec 2021 | Operating | — | coming soon |
Owner / operator
Operator: Macadamia Nut Road Solar Project 2019. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Macadamia Nut Road Solar Project 2019 | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| Puna | 39 MW | 3.7 km |
| W H Hill | 37 MW | 7.6 km |
| Kanoelehua | 21 MW | 7.8 km |
| Puueo | 3 MW | 11.6 km |
| Waiau Hydro | 1 MW | 13.5 km |
| Wailuku River Hydroelectric | 10 MW | 15.9 km |