New York power

This facility is kept available as backup capacity rather than run continuously. It reported 17 MWh sent to the grid in 2024.

Air quality & health in Westchester County

Westchester County has a population of 990,817. Across five conditions the American Lung Association tracks — childhood asthma, adult asthma, COPD, lung cancer, and cardiovascular disease — it reports a combined 205,615 cases in the county.

The county received a grade of D for ozone pollution. No particle pollution grade is available.

Federal monitoring recorded 215 days of good air quality and 53 moderate days in the county over the most recent year, with 5 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 46 oil-fired plants in this category, and JLL-One Rockwood Road, at 1 Rockwood Road in Sleppy Hollow, ranks #32 of 46 by 2024 electricity produced. It began operating in 2003 and runs two generators on distillate fuel oil, a light petroleum fuel, with a combined capacity of 3.0 MW (a megawatt measures how much power a plant can supply at one moment).

This is a standby plant, meaning it exists to be ready rather than to run all the time. Its job is to be available if power is needed, and its output in 2024 was small. The electric utility serving the area is Con Edison.

Nearby places worth exploring

Sleepy Hollow and Tarrytown sit side by side along the Hudson River, and White Plains and Yonkers are the larger urban centers in Westchester County. Rockefeller State Park Preserve is a popular county destination for walking, and Playland amusement park in Rye draws visitors from across the region.

Local school district

Union Free School District of the Tarrytowns

Common questions

* 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.