Power station turbine hall. View, from one of the chimneys, of the turbine hall (white, lower centre) and the electricity grid substation (upper centre), at a coal-fired power station. The burning of coal drives the turbines to generate electricity. This is distributed through the electricity substation into the national grid system. This is the Drax power station near Selby, North Yorkshire, UK. This view looks east from the smaller of the two Drax chimneys. As of 2006, Drax is the largest, cleanest and most efficient of the UK's coal-fired power stations. It can burn 36,000 tones of coal a day to produce 4,000 megawatts of power, around 7% of the UK's electricity needs. It was built from 1974-1986. For a view of the chimney, see T190/454.