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Profile
New York power
Produced 129.2 gigawatt-hours of electricity in 2024 — enough electricity for about 13,000 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
Of New York’s 100 natural gas plants, Glenwood Landing ranks #34 by the electricity it produced in 2024. It sits on Shore Road in Nassau County, drawing water from Hempstead Harbor, and has been running since 1967. National Grid Generation LLC owns it, and its power flows to customers through PSEG Long Island.
The plant has three generators and a capacity of 122.0 MW (megawatts, a measure of the most power it can deliver at one moment). In 2024 it produced 129.2 gigawatt-hours (a unit of electricity over time), which is about 13,000 homes’ worth. It burns mostly natural gas, with some distillate fuel oil, using combustion turbines, engines that spin much like a jet engine to turn a generator.
Generation profile
The plant can produce 122 megawatts of electricity at once, across 3 generating units. In 2024 it produced 129.2 gigawatt-hours in total, which works out to about 12% 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
Glenwood Landing is on Long Island’s North Shore, close to Hempstead Harbor. Across the county, Old Westbury Gardens and Hofstra University are well-known stops. For a day at the ocean, Jones Beach State Park and the city of Long Beach lie along the Atlantic shore.
Local school district
North Shore 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.
