14th largest plant in Massachusetts · 1180th nationally
Masspower is a natural gas power plant in Massachusetts with a nameplate capacity of 261 MW. It generates roughly 609.1k MWh per year — enough to power about 58,013 average U.S. homes.
Its capacity factor of 27% reflects intermittent or peaking operation. At 1024 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 (261 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 | Masspower |
|---|---|
| Operator | Masspower |
| City | Indian Orchard |
| County | Hampden County |
| State | Massachusetts |
| ZIP | 01151 |
| Coordinates | 42.15750, -72.52250 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GEN1 | Natural Gas Fired Combined Cycle | Natural Gas | 90.0 MW | Operating | 1993 |
| GEN2 | Natural Gas Fired Combined Cycle | Natural Gas | 90.0 MW | Operating | 1993 |
| GEN3 | Natural Gas Fired Combined Cycle | Natural Gas | 80.9 MW | Operating | 1993 |
| CO₂ | 311.9k metric tons |
|---|---|
| SO₂ | 2 metric tons |
| NOₓ | 95 metric tons |
| CO₂ Rate | 1024 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. |
Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.