Alstom said Nov. 4 that it has 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 project would also be equipped with two General Electric advanced, high-efficiency H-class gas turbines. They are the Colorado Bend Generating Station in Wharton County and Wolf Hollow plant in Granbury. Construction of the new gas units – each will generate approximately 1,000 MW on the Texas grid – is expected to begin in 2015 with commercial operation targeted for 2017.
“Alstom is very pleased to be selected by Exelon Generation to supply its HRSGs for these new plants,” said Steve Meszaros, Senior Vice President of Alstom Thermal Power’s Gas Business. “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.”
Recently, Alstom has secured HRSG orders for three combined-cycle power plants that feature advanced class gas turbines. These HRSGs utilize Alstom’s OCC Module Design, which is optimized for cycling and constructability. They are 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 results in fewer heavy component lifts and fewer field welds.
Alstom’s HRSG technology recovers exhaust heat from the gas turbines to produce steam that maximizes generation capacity and efficiency. It improves the performance of combined-cycle power plants while sharply reducing emissions with its integrated Catalytic Oxidation (CO) and Selective Catalytic Reduction (SCR) technology.
Exelon Generation announced Sept. 29 that it is planning to build two combined-cycle gas turbine (CCGT) units in Texas utilizing a new GE technology that will make them among the cleanest, most efficient CCGTs in the state and the nation. The new units are being built on existing Exelon sites: at the Colorado Bend Generating Station, currently a 498-MW natural gas plant in Wharton County; and at the 704-MW Wolf Hollow natural gas plant in Granbury. Each new unit will add approximately 1,000 MW of capacity to their respective sites.
Alstom is a global leader in the world of power generation, power transmission and rail infrastructure and sets the benchmark for innovative and environmentally friendly technologies.