195th largest plant in New York · 5364th nationally
Macarthur Waste To Energy Facility is a biomass power plant in New York with a nameplate capacity of 12.5 MW. It generates roughly 54.2k MWh per year — enough to power about 5,163 average U.S. homes.
Its capacity factor of 50% puts it in the middle range — running steadily but not full-time. At 3539 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (12.5 MW nameplate × hours in the month). Filled bars are actual net generation reported to EIA Form 923. The gap between them is capacity factor made visible.
| Plant Name | Macarthur Waste To Energy Facility |
|---|---|
| Operator | Reworld Macarthur Renewable Energy |
| City | Ronkonkoma |
| County | Suffolk County |
| State | New York |
| ZIP | 11779 |
| Coordinates | 40.78690, -73.10640 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GEN1 | Municipal Solid Waste | Municipal Waste | 12.5 MW | Operating | 1990 |
| Owner | Location | Share |
|---|---|---|
| Islip Resource Recovery Agency | Ronkonroma, NY | 10000.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| CO₂ | 95.9k metric tons |
|---|---|
| SO₂ | 144 metric tons |
| NOₓ | 181 metric tons |
| CO₂ Rate | 3539 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.
| NERC Region | NPCC |
|---|---|
| Balancing Authority | New York 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.