Press Association: Cash raised from selling carbon allowances to companies to cover their emissions should be used to pay for measures such as improving energy efficiency in homes, a thinktank urged today. Some 7% of the UK’s carbon permits distributed under the new phase of the EU’s emissions trading scheme (ETS) will be auctioned, instead of being handed out for free. The first sale of four million allowances today is expected to raise some £60m for the government, which the Institute for …