18th largest plant in Hawaii · 3561st nationally
Schofield Generating Station is a biomass power plant in Hawaii with a nameplate capacity of 50.4 MW. It generates roughly 22.9k MWh per year — enough to power about 2,176 average U.S. homes.
Its capacity factor of 5% reflects intermittent or peaking operation. At 465 lb CO₂/MWh, its emission rate sits below the national grid average of roughly 800 lb/MWh.
| Plant Name | Schofield Generating Station |
|---|---|
| Operator | Hawaiian Electric Co Inc |
| City | Schofield Barracks |
| County | Honolulu County |
| State | Hawaii |
| ZIP | 96857 |
| Coordinates | 21.47850, -158.05810 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| S1 | Other Waste Biomass | Other Biomass Liquids | 8.4 MW | Operating | 2018 |
| S2 | Other Waste Biomass | Other Biomass Liquids | 8.4 MW | Operating | 2018 |
| S3 | Other Waste Biomass | Other Biomass Liquids | 8.4 MW | Operating | 2018 |
| S4 | Other Waste Biomass | Other Biomass Liquids | 8.4 MW | Operating | 2018 |
| S5 | Other Waste Biomass | Other Biomass Liquids | 8.4 MW | Operating | 2018 |
| S6 | Other Waste Biomass | Other Biomass Liquids | 8.4 MW | Operating | 2018 |
| CO₂ | 5.3k metric tons |
|---|---|
| SO₂ | 1 metric tons |
| NOₓ | 235 metric tons |
| CO₂ Rate | 465 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| Balancing Authority | Hawaiian Electric Co Inc |
|---|
Biomass plants burn wood, agricultural waste, or methane from landfills to generate steam and electricity. They are considered carbon-neutral over long timescales when fuel is sustainably sourced, but they produce particulate emissions similar to coal.