The Wales coast has a significant wave and tidal stream climate, as well as huge opportunities for tidal range. Welsh Government commissioned the Marine Renewable Energy Strategic Framework (MRESF) for Wales, a £1 million project mapping resource and potential constraints, which provides developers with an online mapping tool. The project confirmed there is the potential to deliver 6.4 GW installed capacity.
The Crown Estate’s UK Wave and Tidal Key Resource Areas Project (2012) highlighted Wales as having significant tidal stream and wave resources.
Anglesey has huge potential for tidal stream energy with a peak spring velocity of over 3 m/s. These tidal current speeds combined with water depth and seabed topography are among the best in the EU.
Pembrokeshire has the highest concentration of wave resource in Wales equating to an indicative capacity of up to 5.6 GW providing a significant opportunity for development of the industry. A report looking at wave resource in Pembrokeshire (2012) can be found here and potential tidal array sites here.
Tidal range resource is also abundant across Wales and Tidal Lagoon Power aim to deliver up to 9 GW installed capacity through their four tidal lagoon projects across the country.