2nd largest plant in Connecticut · 308th nationally
Middletown is a natural gas power plant in Connecticut with a nameplate capacity of 1,028 MW. It generates roughly 173.3k MWh per year — enough to power about 16,502 average U.S. homes.
Its capacity factor of 2% reflects intermittent or peaking operation. At 1535 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 (1,028 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 | Middletown |
|---|---|
| Operator | Middletown Power Llc |
| City | Middletown |
| County | Middlesex County |
| State | Connecticut |
| ZIP | 06457 |
| Coordinates | 41.55494, -72.57908 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 4 | Petroleum Liquids | Residual Oil | 415 MW | Operating | 1973 |
| 3 | Natural Gas Steam Turbine | Natural Gas | 239 MW | Operating | 1964 |
| 2 | Natural Gas Steam Turbine | Natural Gas | 114 MW | Operating | 1958 |
| 1 | Petroleum Liquids | Residual Oil | 69.0 MW | Retired | 1954 |
| 10 | Petroleum Liquids | Distillate Oil | 18.5 MW | Operating | 1966 |
| CO₂ | 133.0k metric tons |
|---|---|
| SO₂ | 71 metric tons |
| NOₓ | 133 metric tons |
| CO₂ Rate | 1535 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.