Plans to erect 7,000 new wind turbines will be unveiled by the government today, but industry experts are concerned they have not been thought through. Sue Ion, vice-president of the Royal Academy of Engineering, said the engineering problems had been "totally underestimated, if accounted for at all". The government's drive to increase the energy generated by renewables will generate 160,000 new jobs, Gordon Brown, prime minister will announce today. But the Department for Business admitted yesterday that many of these would be abroad.

Fiona Harvey and Jim Pickard