In 1978, two Toshiba 660 MW units were added to the Vales Point Power Station, becoming "B" Station. The combined capacity of 2195 MW made Vales Point the largest power station in Australia at the time. The Toshiba 660 MW turbo-alternator became the standard in New South Wales, with similar units later being installed at Eraring, Bayswater and Mount Piper.