55th largest plant in Maine · 5301st nationally
Regional Waste Systems is a biomass power plant in Maine with a nameplate capacity of 13.3 MW. It generates roughly 81.1k MWh per year — enough to power about 7,726 average U.S. homes.
Its capacity factor of 70% puts it in the middle range — running steadily but not full-time. At 2401 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 (13.3 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 | Regional Waste Systems |
|---|---|
| Operator | Ecomaine |
| City | Portland |
| County | Cumberland County |
| State | Maine |
| ZIP | 04102 |
| Coordinates | 43.65560, -70.33470 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| TG1 | Municipal Solid Waste | Municipal Waste | 13.3 MW | Operating | 1988 |
| CO₂ | 97.4k metric tons |
|---|---|
| SO₂ | 148 metric tons |
| NOₓ | 431 metric tons |
| CO₂ Rate | 2401 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 | Iso New England 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.