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GE Gas Turbines Eliminate Ocean Water for Cooling at LADWP

Linda Hardesty

GE Energy ManageThe Los Angeles Department of Water and Power (LADWP) plans to phase out the Scattergood Generating Station’s 460-MW Unit 3 conventional steam boiler, in operation since 1974, and replace the capacity with cleaner, technology from GE.

For the Scattergood repowering project near El Segundo, LADWP chose the combination of GE’s heavy-duty and aeroderivative gas turbines, integrated using GE’s distributed control system (DCS). This is a pairing of one GE GT-7F.05 gas turbine in a “Rapid Response” combined-cycle power island, with two LMS100 gas turbines into a hybrid power plant, specifically configured to meet LADWP’s unique requirements.

The combined GE technology eliminates the use of ocean water for cooling and requires minimal water use, providing over 500 MW of output using air-cooled condenser technology. In addition, the compact equipment footprint fits the unique site layout, and the new plant can start up and ramp up quickly to support the use of renewable energy.

“Older units can take all day to reach full power, causing us to lose the window of opportunity we have to capture electricity produced by wind,” said Aram Benyamin, LADWP senior assistant general manager-Power System.

Commercial operation of the Scattergood station’s new power generating equipment is scheduled to begin by the end of 2015.



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