East River Repowering Project

Brief Overview

Slattery Skanska continued its foray into the power market by securing this contract to repower one of Consolidated Edison Company of New York, Inc.'s largest and most significant combined-cycle power stations, the East River Generating Station. The 43,000-square-foot facility produces electricity and steam for homes and businesses throughout New York City.

To repower the facility, the Slattery Skanska team, performed all civil, structural, electrical and mechanical work, including the installation of major equipment, such as: two GE Frame 7FA gas turbines, two Vogt-NEM, Inc. heat recovery steam generators, and three Atlas Copco gas compressors. Slattery Skanska's forces also installed over 100,000 linear feet of process pipe. 

The project team was responsible for installation of mechanical systems including the state-of-the-art water treatment plant, featuring a 9,000 GMP reverse osmosis system that will produce high-quality water for steam generation. Electrical work included installation of 77,000 linear feet of conduit, 15,000 linear feet of cable tray, 665,000 feet of power and control cable, and 30,000 electrical terminations.

The most challenging aspect of the project was the logistical constraints posed by the equipment being placed inside an operating powerhouse. The state-of-the-art equipment was offloaded via barge from the Hudson River and then trucked over to the site. Workers had to lower the equipment into the plant through openings in the building's roof and sidewall. Major structural modifications to the existing building and shell were a part of the work.

The facility will produce a maximum steam generating capacity totaling approximately three million pounds per hour and a maximum electric generation capacity of 360 Mw.