Guest blog from David Krohn, Development Manager at RenewableUK.
The South West has once again been voted England’s greenest region, not least of all for the efforts Cornwall has made to advance the delivery of renewable energy, especially marine renewable energy. Cornwall’s significant and reliable wave resource makes it the ideal venue for hosting the world’s first testing facility exclusively focused on harnessing wave energy, Wave Hub.
The 8km2 Wave Hub or “socket in the sea” provides shared infrastructure for the proving of wave energy devices and consists of an electrical hub on the seabed, 16km off the coast of Cornwall. This hub is in turn linked to the UK’s grid network by a 25km long, 1300 tonne subsea cable operating at 11kV. Linking marine energy devices to the national grid is extremely costly and Wave Hub is attracting great interest due to the fact that devices have a ready made entry point to the grid.
Furthermore, the facility has the environmental monitoring capability, nearby port infrastructure and developed regional supply chain needed to produce marine energy as cost effectively as possible. Wave Hub alleviates one of the major barriers to development as it holds the necessary consents and permits to install 20MW of wave energy devices, without the need for the developers to go through the rigorous consenting process usually required if developers take forward an independent project.
The shared infrastructure and consented sites gives developers a cost effective means to take the final steps towards commercialization, and prove that wave energy is a viable industry.
Wave Hub provides a rich learning environment for education, training and research into renewable energy technologies in the South West. Besides its rich wave resource,Cornwall has developed intellectual assets that make it an ideal place to carry out sea trials. Wave Hub is complemented by The Peninsula Research Institute for Marine Renewable Energy (PRIMaRE), a centre of excellence based at Plymouth University, which is developing knowledge around resource characterisation and aiding technology transfer for critical elements of marine energy.
Wave Hub has now attracted its first customer, Ocean Power Technologies, which intends to install a 5MW array of its Powerbuoy devices and several other high profile developers are developing proposals to have scale devices installed. With the resources available in Cornwall and the advantages Wave Hub offers, it is only a matter of time before the berths fill up and Cornwall takes its rightful place as a leading region for Wave energy.
The potential for Cornwall’s various resources to catalyse an entirely new industry in the South West of England is vast, as we build on the established skills in the south west, and capitalise on the forward looking attitude of local politicians and an ever greener public.
David Krohn Biography
David Krohn is the Wave and Tidal development manager at RenewableUK. His role comprises of analyzing and influencing policy to create the optimal conditions for marine energy installation. His industry building activities include dissemination of information and best practice flowing from the activities of the sector as well as connecting the various parts of the industry so that they work in a coordinated and coherent way.
Prior to moving to RenewableUK, David studied Environmental law at the University of Cape Town and has worked across a range of energy and sustainability initiatives, primarily through the construction lens. Most recently, he managed a Nuclear Decommissioning Stakeholder Dialogue bringing together government, generators and a range of NGOs to develop best practice guidance for the industry.

