French company Alstom has signed a contract 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 high-efficiency H-class gas turbines. The deal is worth approximately $100 million.

Equipment will be supplied to Exelon Generation’s Colorado Bend Generating Station in Wharton County, Texas, and Wolf Hollow plant in Granbury, Texas. 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’s HRSG technology recovers exhaust heat from the gas turbines to produce steam, a process that maximizes generation capacity and efficiency. It improves the performance of combined-cycle power plants while sharply reducing emissions with its integrated catalytic oxidation and selective catalytic reduction technology.