Coal supplies for a power station. Coal scrapers (yellow) on the coal stockpile of a coal-fired power station. Coal scrapers move and compact coal to avoid spontaneous combustion. This coal stockpile is at the Drax power station near Selby, North Yorkshire, UK. 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 coal stockpile, see T190/440.