Firefighters responded to a small fire at the E.F. Barrett Power Station in Island Park on Monday.
National Grid spokesman Steve Brady said the fire was reported in the late afternoon and was extinguished by evening. Brady said the fire was in a unit connected to one of the gas turbines and that the Island Park Fire Department helped plant workers put out the blaze.
There were no injuries and no cause of the fire as of Monday evening.
"The unit is both safe and offline," he said, adding that the fire wasn't a natural gas fire.
LIPA spokesman Mark Gross said no outages were associated with the fire.
The station is owned by National Grid, which acquired it and other former Long Island Lighting Co. power plants when it bought KeySpan in 2007.
The facility has two big steam-generating plants that have been operational since the late 1950s and early 1960s, each generating 175 megawatts of power. A megawatt powers up to 800 homes.
The facility also has 12 combustion turbines that are around 40 years old and produce a combined 305 megawatts.
The plant uses natural gas and fuel oil to power its generating turbines.