Guardian: Tens of thousands fewer home lofts have been insulated under the government’s £2.8bn energy efficiency programme than companies such as British Gas have claimed, the Observer has learnt. Experts claim that double-counting means that up to 9.8m tonnes of carbon dioxide that the scheme is supposed to have saved is “illusory”. Energy companies have also saved millions because subsidising loft installation is one of the cheapest and most effective ways to meet their obligations under the …