My Lords, it is important that we exploit our tidal resources to provide energy security, carbon reduction and economic growth. However, it must be done in a manner that constitutes value for money. The Government do not see a strategic economic case for public investment in a tidal barrage in the Severn at the present time, given its very large costs. Instead, our focus is on developing tidal stream and wave technologies. The UK is already a global leader in this emerging sector.