Mauna Loa Macadamia Nut
Solar power plant · Hawaii County, Hawaii
Nameplate capacity
1.3 MW
Rank in Hawaii
#69
of 76 plants
In service since
2021
December 2021
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Macadamia Nut Road Solar Project 2019
- County
- Hawaii County
- Generating units
- 2
- Share of state capacity
- 0.04%
- Rank among solar plants in Hawaii
- #25 of 29
- EIA plant code
- 68605
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 3146G | Solar Photovoltaic | 0.8 MW | 0.8 MW | 2021 | Operating |
| 3146B | Batteries | 0.5 MW | 0.5 MW | 2021 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Hawaii
| BRE - Ritz Carlton Kapalua | Solar | 1.5 MW |
| Waihonu South Solar | Solar | 1.5 MW |
| Paia Hydroelectric Plant | Hydro | 1.3 MW |
| Lanai Solar-Electric Plant | Solar | 1.2 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 1.3 MW solar plant and a 1.3 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Hawaii power plants · What Hawaii actually generates