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Hydroelectricity is electricity generated by hydropower, i.e., the production of power through use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy. Once a hydroelectric complex is constructed, the project produces no direct waste.
Of course most people would like to see a more environmentally friendly mix of energy sources transformed into electrical energy but at present fossil fuel sources are the mainstay of electricity in Australia. The mix of energy sources to convert into electrical energy is changing. Hydro. Electrical energy created from water stored in huge dams. The energy created by the water released from these dams is transformed into electricity by hydro-electric turbines and generators. The most famous source of hydroelectric power is in the Snowy Mountains, NSW.