Mauna Loa Macadamia Nut
Solar and battery storage project in Hawaii County, Hawaii. 1.3 MW of nameplate capacity across 2 generators, operated by Macadamia Nut Road Solar Project 2019.
Also known as EIA plant 68605
This project groups Mauna Loa Macadamia Nut (EIA 68605). EIA reports them as separate plants.
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1.3 MWSolar 0.8 · Battery storage 0.5
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- December 2021First generator online
- Operator
- Macadamia Nut Road Solar Project 2019EIA operator ID 66970
- Grid
- HECOBalancing authority HECO
- Price nodes
- None linkedNo verified ISO node
- Location
- Hawaii County, HI19.6569, −155.0087
- EIA plant ID
- 68605EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Mauna Loa Macadamia Nut produces
Free · EIA-923Net generation, 2025
1.42 GWh
1,423 MWh, final
Capacity factor, 2025
20.5%
2024: 19.6%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2024 to 2025
1.4–1.4
GWh a year. Low 2024, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | Not reported | Not reported | 0 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | Not reported | Not reported | 0 of 12 |
| 2021 | Not reported | Not reported | 0 of 12 |
| 2022 | Not reported | Not reported | 0 of 12 |
| 2023 | Not reported | Not reported | 0 of 12 |
| 2024 | 1,350 | 19.6% | 12 of 12 |
| 2025 | 1,423 | 20.5% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 3146B | Batteries | 0.5 | December 2021 |
| 3146G | Solar Photovoltaic | 0.8 | December 2021 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Macadamia Nut Road Solar Project 2019 as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Questions about Mauna Loa Macadamia Nut
How much power does Mauna Loa Macadamia Nut produce?
Mauna Loa Macadamia Nut reported 1,423 MWh (1.42 GWh) of net generation in 2025, a 20.5% capacity factor on 1.3 MW of nameplate capacity.
Where is Mauna Loa Macadamia Nut?
Mauna Loa Macadamia Nut is in Hawaii County, Hawaii, at 19.6569, −155.0087. It is in the Hawaiian Electric Co Inc balancing area (HECO).
Who operates Mauna Loa Macadamia Nut?
EIA-860M for August 2026 lists Macadamia Nut Road Solar Project 2019 as the operator (EIA operator ID 66970). The operator is not always the owner.
Is Mauna Loa Macadamia Nut a solar or a battery storage plant?
Both. Solar capacity totals 0.8 MW and battery storage capacity totals 0.5 MW.
When did Mauna Loa Macadamia Nut start operating?
Its first generator began operating in December 2021, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page