More important, there are five other forms of renewable energy which we could use on a large scale, of which hydro has the capacity to store energy.
Tidal power only delivers at certain times, but spreading barrages around the coast instead of concentrating on the Severn should provide a continuous supply. Wave power should deliver all the time, but little effort has gone into developing it.
Let's get away from simplistic arguments about wind versus nuclear. Uranium may run short in about 2030.
New nuclear power stations will deliver nothing for about 10 years and some climate scientists think the next eight years will be crucial to avoid severe global warming.
D H T SMITH [M], the Thursfield Smith Consultancy, 25 Grange Rd, Shrewsbury SY3 9DG