Schofield Generating Station
Biomass power plant in Honolulu County, Hawaii. 50.4 MW of nameplate capacity across 6 generators, operated by Hawaiian Electric Co Inc.
Also known as EIA plant 60328
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Key facts
- Capacity
- 50.4 MWNameplate
- Generators
- 6 operatingEIA-860M, August 2026
- Operating since
- June 2018First generator online
- Operator
- Hawaiian Electric Co IncEIA operator ID 19547
- Grid
- HECOBalancing authority HECO
- Price nodes
- None linkedNo verified ISO node
- Location
- Honolulu County, HI21.4785, −158.0581
- EIA plant ID
- 60328EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Schofield produces
Free · EIA-923Net generation, 2025
9.34 GWh
9,344 MWh, final
Capacity factor, 2025
2.1%
2024: 5.1%
January to July 2026
10.3 GWh
Provisional
Range, 2019 to 2025
9.3–50.7
GWh a year. Low 2025, high 2019
| 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 | 31,231 | Not reported | 7 of 12 |
| 2019 | 50,700 | 11.5% | 12 of 12 |
| 2020 | 26,958 | 6.1% | 12 of 12 |
| 2021 | 22,654 | 5.1% | 12 of 12 |
| 2022 | 14,908 | 3.4% | 12 of 12 |
| 2023 | 22,856 | 5.2% | 12 of 12 |
| 2024 | 22,726 | 5.1% | 12 of 12 |
| 2025 | 9,344 | 2.1% | 12 of 12 |
| 2026 (provisional, partial year) | 10,349 | 4.0% | 7 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.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| S1 | Other Waste Biomass | 8.4 | June 2018 |
| S2 | Other Waste Biomass | 8.4 | June 2018 |
| S3 | Other Waste Biomass | 8.4 | June 2018 |
| S4 | Other Waste Biomass | 8.4 | June 2018 |
| S5 | Other Waste Biomass | 8.4 | June 2018 |
| S6 | Other Waste Biomass | 8.4 | June 2018 |
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 Hawaiian Electric Co Inc as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Schofield
More plants operated by Hawaiian Electric Co Inc
Questions about Schofield
How much power does Schofield Generating Station produce?
Schofield Generating Station reported 9,344 MWh (9.34 GWh) of net generation in 2025, a 2.1% capacity factor on 50.4 MW of nameplate capacity. From January to July 2026 it reported 10.3 GWh, which is provisional.
Where is Schofield Generating Station?
Schofield Generating Station is in Honolulu County, Hawaii, at 21.4785, −158.0581. It is in the Hawaiian Electric Co Inc balancing area (HECO).
Who operates Schofield Generating Station?
EIA-860M for August 2026 lists Hawaiian Electric Co Inc as the operator (EIA operator ID 19547). The operator is not always the owner.
When did Schofield Generating Station start operating?
Its first generator began operating in June 2018, 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