In 1980, the main fuel source in Australia was coal, accounting for 50% of all sources. Ranked second were hydro power and natural gas, at 20% and Australia used oil the least, with 10%. In 2000, the number of coal used rose for around 75% as well as that of hydro power increasing to 36%. Meanwhile, Australia used less natural gas and oil with 2%. It is interesting to note that Australia never used nuclear power to produce electricity.