The new units that are being developed at Colorado Bend Generating Station include a 498 MW natural gas plant in Wharton County and the 704MW Wolf Hollow natural gas plant in Granbury.
The four 7HA gas turbines, together with the steam turbines and generators, will add a total of 2,000MW of additional capacity for the projects.
GE is expected to deliver the equipment in 2016 for the power plants, which are scheduled to commence operations in 2017.
GE Power & Water power generation products president and CEO Victor Abate said: "We have invested more than $1 billion in our latest H-class technology to deliver the most cost-effective, dispatchable power to consumers."
"These combined cycle plants will use our air-cooled 7HA.02 gas turbines, which provide the most output, highest efficiency and best operational flexibility for 60 Hz applications. They are designed to start fast, ramp up more quickly and turndown more efficiently than any other H-class turbine on the market today."
Alstom Power will provide the heat recovery steam generators (HRSGs) in order to produce the steam necessary to boost generating capacity and efficiency at each unit.
