Estuary

The Severn Estuary, earmarked as a potentially huge source of energy, has been met with increasing concerns over serious environmental damage. A report from 2008 by Frontier Economics found that justification for the Severn Barrage is slim - both economically speaking and on environmental grounds. Peter Bunyard takes a look at an innovative solution that has similarities with a tidal reef.

The potential for the use of tidal power in the UK is enormous, amounting to, at the very least, 20 per cent of our electricity needs.