UK Daily Mail 
Jan 8, 2011
Britain’s wind farms almost ground to a halt during the coldest spells in December, it has emerged.
As temperatures plunged below zero and demand for electricity soared, figures reveal that most of the country’s 3,000 wind turbines were virtually still, energy experts say.
During some of the chilliest weather, they were working at less than one-hundredth of capacity, producing electricity for fewer than 30,000 homes.
The National Grid was forced to compensate for the still, cold conditions by cranking up conventional coal and gas-fired power stations.
December was the coldest month in more than a century – and yesterday, as some in northern England, the Midlands and Wales were hit with more snow, residents will have been switching on the heating again. But critics have warned that the UK is becoming too dependent on wind for power.