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Profile
New York power
Produced 0.1 gigawatt-hours of electricity in 2024 — enough electricity for about 12 homes for a year.*
Air quality & health in Nassau County
Nassau County has a population of 1,381,715. Across five conditions the American Lung Association tracks — childhood asthma, adult asthma, COPD, lung cancer, and cardiovascular disease — it reports a combined 287,550 cases in the county.
Federal monitoring recorded 1 days of good air quality and 0 moderate days in the county over the most recent year, with 0 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 Charles P Keller plant in Rockville Centre, owned by the Village of Rockville Centre, ranks #99 of 100 by 2024 electricity produced. It has been operating since 1942, and it uses natural gas internal combustion engines, which work much like a car engine, burning fuel to spin a generator.
In 2024 it produced 123 MWh (a megawatt-hour is a unit of electricity), or 0.1 gigawatt-hours, enough for about 12 homes. Its capacity is 29.4 MW (a megawatt is a measure of the most power a plant can deliver at once). It runs mostly on natural gas, with some distillate fuel oil, a light fuel oil, as backup.
Generation profile
The plant can produce 29 megawatts of electricity at once, across 6 generating units. In 2024 it produced 0.1 gigawatt-hours in total, which works out to about 0% of what it could have produced running flat out all year — the pattern of a plant that runs only during periods of high demand.
Nearby places worth exploring
Rockville Centre sits in Nassau County on Long Island, a short trip from the Atlantic shore, where Jones Beach State Park and the city of Long Beach are popular destinations. Inland, Old Westbury Gardens and Hofstra University are also in the county.
Local school district
Rockville Centre Union Free 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.
