Sir: I must correct John Etherington (letter, 26 October) with regard to wind power in Britain. The land required to generate 10 per cent of total power demand from wind power is just 25 square kilometres. By comparison, more than 3,500 square kilometres of the UK is covered by roads, and agriculture takes up 185,000 square kilometres.
Furthermore, to generate 10 per cent of our energy from wind would require not 40,000 turbines but 10,000. There were 10,000 windmills in Britain at the beginning of the First World War.
Friends of the Earth