790th largest plant in California · 5494th nationally
Ameresco Ox Mountain is a biomass power plant in California with a nameplate capacity of 11.4 MW. It generates roughly 87.0k MWh per year — enough to power about 8,289 average U.S. homes.
Its capacity factor of 87% means it runs nearly around-the-clock as baseload generation.
| Plant Name | Ameresco Ox Mountain |
|---|---|
| Operator | Ameresco Ox Mountain Energy Llc |
| City | Half Moon Bay |
| County | San Mateo County |
| State | California |
| ZIP | 94019 |
| Coordinates | 37.50000, -122.40000 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 7 | Landfill Gas | Landfill Gas | 3.0 MW | Approved | — |
| 1 | Landfill Gas | Landfill Gas | 1.9 MW | Operating | 2008 |
| 2 | Landfill Gas | Landfill Gas | 1.9 MW | Operating | 2008 |
| 3 | Landfill Gas | Landfill Gas | 1.9 MW | Operating | 2008 |
| 4 | Landfill Gas | Landfill Gas | 1.9 MW | Operating | 2008 |
| 5 | Landfill Gas | Landfill Gas | 1.9 MW | Operating | 2008 |
| 6 | Landfill Gas | Landfill Gas | 1.9 MW | Operating | 2008 |
| SO₂ | 15 metric tons |
|---|
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | WECC |
|---|---|
| Balancing Authority | California Independent System Operator |
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.