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Profile
New York power
Produced 309.3 gigawatt-hours of electricity in 2024 — enough electricity for about 31,000 homes for a year.*
Air quality & health in Suffolk County
Suffolk County has a population of 1,523,170. Across five conditions the American Lung Association tracks — childhood asthma, adult asthma, COPD, lung cancer, and cardiovascular disease — it reports a combined 316,289 cases in the county.
The county received a grade of F for ozone pollution. For particle pollution — the fine soot and dust that can be breathed deep into the lungs — it received a grade of A.
Federal monitoring recorded 235 days of good air quality and 76 moderate days in the county over the most recent year, with 3 days rated unhealthy for sensitive groups.
Long-term exposure to air pollution has been linked to certain health conditions, particularly for children and older adults. Where electricity comes from affects how much combustion pollution is produced on the grid.
These figures describe the county as a whole and are not specific to this facility. Sources: American Lung Association – State of the Air (New York); U.S. EPA Air Quality Index.
The story behind this New York power plant
New York has 100 natural gas plants in this category, and the Stony Brook Cogen Plant on Gymnasium Road ranks #28 of them by 2024 electricity produced. It runs a natural gas fired combustion turbine, which works a bit like a jet engine: burning gas spins a turbine that drives a generator. Its capacity is 47.0 MW, a measure of the most power it can deliver at once.
In 2024 it generated 309.3 gigawatt-hours, enough to power about 31,000 homes. The plant began operating in 1995 and is owned by Nissequoque Cogen Partners. “Cogen” is short for cogeneration, meaning one fuel source supplies more than one useful product.
Generation profile
The plant can produce 47 megawatts of electricity at once, across 1 generating unit. In 2024 it produced 309.3 gigawatt-hours in total, which works out to about 75% of what it could have produced running flat out all year — the pattern of a plant that runs through much of the year.
Nearby places worth exploring
Stony Brook is home to Stony Brook University, and Suffolk County offers plenty of room to explore. Fire Island’s beaches sit along the county’s south shore, while the North Fork wine country and the Hamptons lie farther east. Montauk Point marks the far eastern tip of Long Island.
Local school district
Three Village Central School District
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* Homes-powered and emissions comparisons are annual estimates based on national averages from the U.S. Energy Information Administration. “Homes powered” describes a quantity of electricity, not direct service to specific households. How we calculate this.
