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With state energy officials keeping an eye on the option of extending compliance dates for once-through cooling unit regulations, the Los Angeles Department of Water and Power on Aug. 29 broke ground on its Scattergood Repowering Project as it aims to comply with the water regulations while helping to ensure a reliable power grid in Southern California.
The LADWP said in a news release that the $950 million Scattergood project will replace the existing plant's unit 3 with a combined-cycle, natural gas and steam turbine and two simple-cycle turbines. The 575-MW project will reduce impacts on marine habitat by replacing the current ocean cooling system with an air-cooled condenser for the combined-cycle unit and an air-cooled heat exchanger for the simple-cycle units.
Along with repowering unit 3, the current capacity of the 163-MW Scattergood unit 1 will be lowered to maintain the same total output and meet air quality standards, it said. The Scattergood construction began in April and project completion is expected by December 2015.
The LADWP is eliminating ocean cooling and repowering nine units at three coastal power plants in Los Angeles County: Scattergood, Haynes Generating Station and Harbor Generating Station. Totaling 600 MW, the first repowering project involved the installation of six simple-cycle turbines at Haynes units 5 and 6 and was completed this summer, the utility said.
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