The public power utility wants to transition seven of its natural gas-fired peaker plants that together produce 461 megawatts of electricity to use cleaner technologies.
Six of the plants are in New York City and one is on Long Island.
The plants, installed in 2001, operate about 10% of the time, the authority reported.
The plan is to reduce carbon emissions and other air pollution from the peaker power plants.
The authority has signed an agreement with a coalition of clean energy and environmental justice groups, the PEAK Coalition, to determine the best plan that will also maintain power reliability and resilience for the authority.
Peaker plants are used to provide power to the grid to meet peak demand, typically late afternoon to early evening, when the electricity demand is highest.
Gas-fired peaking plants produce more pollution because of the time needed to fire them up to be able to produce power, officials said.
New York Gov. Andrew Cuomo has called for zero-carbon emission electricity in New York state by 2040.
