The power needed to produce electricity comes from many different sources e.g. coal, peat, wind and water. These sources are used to power turbines and generators. These turbines spin around to cause a build up of electrical charges in a generator which makes an electrical current flow.
Turbines are powered by renewable or non-renewable sources of energy. Non-renewable sources of energy are called fossil fuels and include coal, oil, gas and peat. They are burned to heat water for steam powered turbines. Burning fossil fuels releases gases which harm the environment.