PSEG Fossil LLC has gotten an air permit approval to shut down existing units at its Sewaren Generating Station in Middlesex County, N.J., and to replace those units with a 625-MW combined cycle facility.
The New Jersey State Department of Environmental Protection will be seeking public comment until July 31 on its intent to approve an air pollution control Operating Permit Renewal for this facility. The permitting documents note that earlier this year the agency approved an air permit revision covering the repowering project.
The equipment that currently emits air contaminants from this facility include:
- Four large utility boilers burning natural gas with capacities approximately 104 MW, 118 MW, 107 MW and 127 MW.
- Two house heating boilers burning natural gas with heat input rates of 22 million British thermal units (higher heating value) [MMBtu/hr (HHV)] and 24.29 MMBtu/hr.
- Eight peaking combustion turbines burning distillate oil, each 288 MMBtu/hr.
The new permitting allows the facility to construct and operate a 625-MW unit consisting of two combined cycle combustion turbines (CCCT) with two duct burners and two heat recovery steam generators (HRSGs), a 300-horsepower emergency diesel fire pump and a three-cell mechanical cooling tower. PSEG will shut down the six existing boilers, the eight peaking turbines and the natural gas-fired emergency generator within three months of commencement of operation of any one of the two new combustion turbines.
PSEG Fossil is a unit of Public Service Enterprise Group (NYSE: PEG).