Alstom has signed a contract worth approximately $100 million with Exelon Generation to supply four heat recovery steam generators (HRSGs) for two new combined-cycle gas power plants in Texas, each equipped with two General Electric advanced, high-efficiency H-class gas turbines (Exelon Generation’s Colorado Bend Generating Station in Wharton County and Wolf Hollow plant in Granbury).
Each unit will generate about 1,000 MW on the Texas grid. Construction is expected to begin in 2015 with commercial operation targeted for 2017.
Alstom said it recently 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 said its 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.