By Nicholas Earl A Government backed programme to insulate homes and install heat pumps could inject £6.8bn into the economy by the end of the decade and create almost 140,000 new jobs in the energy sector, according to a new report from Cambridge Econometrics. Produced on behalf on environmental group Greenpeace, the analyst’s report calls for the a nationwide upgrade of energy efficiency across British homes. This includes installing wall, loft and floor insulation as well as double glazing to a minimum of Energy Performance Certificate (EPC) C standard over the next 10-15 years. It also urg…