Peter Ackers is quite right that tidal power is being ignored in the recent renewable energy debates (NCE last week).
However, I am pleased to report that we are not ignoring it here in Bristol.
From research that we are conducting, I now believe that tidal power could be the eventual winner in the race to supply the cheapest and best renewable energy in the 21st century.
However, Peter and others may be even more surprised to hear that I also believe that a 1980's style Severn barrage will never be built. Instead, I predict that a Severn (tidal power) barrier will be built and probably within the next ten years!
Dr John Loveless, senior lecturer, University of Bristol, department of civil engineering, Queen's Building, University Walk, Bristol BS8 1TR