From Perry Bebbington
Hans van Haren makes the case against using tidal power because, as well as ecological damage, there is not much energy to be had anyway (3 April, p 20). However, each renewable energy source cannot on its own cure us of our dependence on coal and oil, and each has its drawbacks. To be effective we need as many different renewable energy sources as possible contributing to our requirements. Tidal power can play its part with the rest.
Kimberley, Nottinghamshire, UK
