Wind capacity in the UK has been increasing at a rate of about 34% each year over the last four years. It has increased five-fold since 1992, while the electricity generated has increased by a factor of 14. This is due to improvement in technologies and better siting of wind farms, says the 1997 Digest of UK Energy Statistics published by the Department of Trade and Industry. Wind's growth has reflected the increase in overall renewable capacity -- other than large scale hydro. Almost all this renewable electricity is generated under contracts mandated by government. Total renewable generation in 1996 was 6.039 GWh -- some 2% of demand -- and was mainly from large scale hydro.