The possibility of some kind of Severn Barrage or tidal power station in the Bristol Channel will be looked at again in a joint venture between local councils on either side of the estuary.
A new commission is to be announced today at the first ever Western Gateway conference - which brings together local authorities from Swansea to Swindon, and Bristol and Newport in between.
The commission has been agreed by the Western Gateway Partnership, the pan-regional partnership for south Wales and western England.
