Gateway Generating Station (GGS), formerly Contra Costa Unit 8 Power Project, is a combined-cycle, natural-gas-fired power station in Contra Costa County, California, which provides power to half a million customers in northern and central California. Gateway Generating Station is on the southern shore of the San Joaquin River, in Antioch, and is one of more than ten fossil-fuel power plants in Contra Costa County. Construction, which cost $386 million, began in 2001; the station began delivering power to customers in 2009. Its nominal capacity is 530 MW, with a peak capacity of 580 MW. It generates electricity using two combustion turbines, paired with heat recovery steam generators (HRSGs) that power one steam turbine. The facility is owned and operated by Pacific Gas and Electric Company (PG&E). In June 2015, a lawsuit was filed against the Environmental Protection Agency to prevent the approval of the station's air-emissions permit; the suit was dismissed in October of that year. As of 2015, the only recorded injury that had ever occurred at the facility was in April 2009, when an employee tripped and chipped a tooth. Construction A proposal to construct the facility, originally called "Contra Costa Unit 8 Power Project", was filed with the California Energy Commission by Mirant Delta (now GenOn Energy Holdings) in January 2000. The proposal was certified in May 2001, at which point construction began. However, by 2002, Mirant was experiencing financial difficulties, and construction was suspended. In July 2005, Pacific Gas & Electric acquired the partially-constructed plant from Mirant in a settlement agreement; in 2006 it was approved as a co-owner of Unit 8, and the process of filing paperwork was resumed. PG&E wanted to change the name of the project from "Contra Costa Unit 8 Power Project" to "Gateway Generating Station"; this name was chosen to show that the "plant represents the 'Gateway' to the future of electric power generation" and was required to file a request for this. The Energy Commission approved this request five months later. During that time, in December 2006, PG&E became the sole owner of the project. Construction finally resumed in February 2007, making Gateway the first new plant built by PG&E in nearly twenty years. The project was expected to cost about $370 million (equivalent to $ in ), employ as many as 400 workers at its peak, involve approximately one million worker-hours, and to provide electricity to customers by 2009.