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Alstom recently signed a contract worth approximately €90 million (over $100m) with Exelon Generation to supply four Heat Recovery Steam Generators (HRSGs) for two new combined-cycle gas power plants in Texas. Each of these will be equipped with two General Electric H-class gas turbines (Exelon Generation's Colorado Bend Generating Station in Wharton County and Wolf Hollow plant in Granbury), and is expected to generate approximately 1,000MW on the Texas grid. Construction of the new gas units is likely to begin in 2015, with commercial operation targeted for 2017.
Alstom's HRSG technology recovers exhaust heat from the gas turbines to produce steam that maximizes generation capacity and efficiency. It is said to improve the performance of combined-cycle power plants while sharply reducing emissions with its integrated Catalytic Oxidation (CO) and Selective Catalytic Reduction (SCR) technology. Alstom's HRSG solutions are likely to help make Exelon Generation's new units among the cleanest and most efficient in the nation.
Recently, Alstom secured HRSG orders for three combined-cycle power plants that feature advanced gas turbines. These HRSGs utilize Alstom's OCC Module Design, which is optimized for cycling and constructability. They are said to be capable of high ramp-up rates and high turndown, providing enhanced flexibility for reliable high cycling duty under a wide range of operational scenarios. Alstom's unique, shop-assembled modular design is often expected to result in fewer heavy component lifts and fewer field welds.
Steve Meszaros, Senior Vice President of Alstom Thermal Power's Gas Business said Alstom is very pleased with the contract. "With over two decades of experience in cycling design and a unique ability to provide customers with a full range of delivery options, Alstom is positioned as a market leader in HRSG technology for the next generation of high efficiency combined cycle power plants."