114th largest plant in Idaho · 8991st nationally
Hidden Hollow Energy is a biomass power plant in Idaho with a nameplate capacity of 3.2 MW. It generates roughly 24.0k MWh per year — enough to power about 2,281 average U.S. homes.
Its capacity factor of 85% means it runs nearly around-the-clock as baseload generation.
| Plant Name | Hidden Hollow Energy |
|---|---|
| Operator | Hidden Hollow Energy Llc |
| City | Boise |
| County | Ada County |
| State | Idaho |
| ZIP | 83714 |
| Coordinates | 43.69722, -116.27139 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| UNT1 | Landfill Gas | Landfill Gas | 1.6 MW | Operating | 2007 |
| UNT2 | Landfill Gas | Landfill Gas | 1.6 MW | Operating | 2007 |
| SO₂ | 4 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 | Idaho Power Company |
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.