Scottish ministers have announced funding for what has been described as the world's biggest wave energy farm.
The Pelamis device has been tested at the European Marine Energy Centre (Emec) on Orkney by Leith-based company Ocean Power Delivery.
Scottish Power wants to commission four more at the same site.
Deputy First Minister Nicol Stephen announced a £13m funding package that will also allow a number of other marine energy devices to be tested.
Ocean Power Delivery has already exported the Pelamis for use in a commercial wave farm.
BBC
