Between 1978 and 1994 the Government supported the most comprehensive programme of research and development on tidal energy in the world at an overall cost in excess of £20 million. Those studies considered tidal barrage energy schemes at a number of potential sites, the largest being in the Severn estuary. The results of the Severn Barrage study were reported in Energy Paper 57 (ISBN 0 11 412952 5).
The most recent study of the Severn scheme was carried out by the Severn Tidal Power Group in 2002 and available at www.dti.gov.uk/files/filel5363.pdf? pubpdfdload=02%2F644
The Department is currently part way through an energy review that will consider all options and opportunities for ensuring we meet our medium and longer-term energy goals.