Several letters on renewable energy have made the point that wind is not reliable, but then include tidal energy schemes in the same breath.
We have 24-hour tidal energy available around the British coastline.
A large number of (small, simple) machines in suitable positions could produce continuous power several times greater than that intermittently produced by the Severn barrage.
Richard Buchanan
London
New IET report examines grid transmission costs
Exactly. I generally resist the temptation to reply but can´t always help myself. Aside from Dave´s insistence that the water be pumped using direct...