Guardian: Britain could save up to £12.6bn a year in imports of fossil fuels such as oil, gas and coal by 2020 if it embarks on a large- scale programme of energy efficiency and renewable technologies including wind power and biomass, a study showed yesterday. The report, carried out by Edinburgh-based consultants Delta EE for the Renewable Energy Association (REA), is the first attempt to quantify the economic benefits to Britain of a move to energy efficiency and sustainability, rather than …