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New York power
Produced 12.2 gigawatt-hours of electricity in 2024 — enough electricity for about 1,200 homes for a year.*
Air quality & health in St. Lawrence County
St. Lawrence County has a population of 106,940. Across five conditions the American Lung Association tracks — childhood asthma, adult asthma, COPD, lung cancer, and cardiovascular disease — it reports a combined 22,121 cases in the county.
No ozone or particle pollution grades are available for this county in the most recent report. The figures above describe how many residents live with conditions sensitive to air quality — not measured pollution levels.
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 Massena Energy Facility, on Alcoa Power Canal Road in St. Lawrence County, ranks #81 of 100 by 2024 electricity produced. It began operating in 1992 and is owned by Power City Partners LP.
The plant is a combined cycle design, meaning it captures waste heat from burning fuel to make extra electricity. Its capacity is 104.1 MW, which is its maximum output at any moment. In 2024 it generated 12.2 gigawatt-hours (a unit of electricity over time), about 1,200 homes’ worth of yearly use. It draws water from the St. Lawarence River.
Generation profile
The plant can produce 104 megawatts of electricity at once, across 3 generating units. In 2024 it produced 12.2 gigawatt-hours in total, which works out to about 1% 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
St. Lawrence County sits along the St. Lawrence River, with the Adirondack foothills rising to the south. Nearby are the college towns of Canton, home to St. Lawrence University and SUNY Canton, and Potsdam, home to Clarkson University and SUNY Potsdam.
Local school district
Massena 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.
