Fiordland, New Zealand, built 1963-1972, generates 850 MW from 7 turbines. It is built underground, and has two 10 km tailrace tunnels. The net head is . The most notable feature of this station is that the lake and power station are located on the eastern side of the Southern Alps, with the tailrace tunnels traveling under a major mountain range, discharging in Doubtful Sound on the west coast. Boundary Dam Powerhouse, in Pend Oreille County, Washington, United States, completed in 1967 and diverting the Pend Oreille River through six units, Boundary Powerhouse produces 1070 MW. Owned and operated by Seattle City Light. Chaira Hydro Power Plant, Bulgaria, is the largest underground power station in the Balkans, built from 1980 to 1998. It has an installed capacity of 864 MW from four 216 MW reversible Francis turbines with a net rated head of , and maximal speed of 600 rpm. Cruachan Dam, United Kingdom, built in the early 1960s, a pumped storage plant generating 440 MW from 4 turbines. Dinorwig Power Station, Llanberis, United Kingdom, built in 1984, is a pumped-storage system, delivering 1,650 MW to Wales and the north-west of England. It stands in Europe's largest man-made cavern. Edward Hyatt Power Plant inside the Oroville Dam, United States, is in a cavern carved into the bedrock of the Feather River canyon. It houses 3 Generator and 3 Pump/Generator units and their respective Transformers below the crest of the dam. Kariba hydro-electric power scheme (1,200 MW) is on the Zambezi river, which forms the border between Zimbabwe and Zambia. The Kariba system comprises two underground power stations. The Kariba South station in Zimbabwe houses six 100 MW generators. The Kariba North station in Zambia houses four 150 MW generators. Paulo Afonso Hydroelectric Complex, Brazil; The combined 4,279.6 Paulo Afonso I, II and III were built underground. Completed in 1955, PA I was Brazil's first underground power station. Poatina Hydroelectric Power Station, Tasmania, Australia, built in 1966-1977 it generates 300 MW with water provided by the Great Lake, it is the largest underground power station in Australia. Raccoon Mountain Pumped-Storage Plant, Chattanooga, Tennessee, United States, built in 1970-1978 generates 1,530 MW. It is an early test of the pumped-storage approach. Robert-Bourassa generating station, Quebec, Canada is the largest underground power station in the world. It generates 5,616 MW from 16 turbines with a net rated head of . Snoqualmie Falls Hydroelectric