A pair of state lawmakers want NYPA, NYSERDA and the state Public Service Commission to study the closure of “peaker” power plants in Brooklyn, Brentwood and Astoria. Peaker plants are power plants that run only during times of peak demand for the power grid - typically during heat waves or extreme cold in the winter. Environmentalists have criticized the state for keeping peaker plants online past their planned closure, while the state Independent System Operator has pushed to keep peaker plants operating over the past few years because of forecast power shortfalls, particularly ...