It's apparently powered by energy from the European Marine Energy Centre: http://www.emec.org.uk/ http://www.emec.org.uk/ I suspect there is simply more infra

It's apparently powered by energy from the European Marine Energy Centre: http://www.emec.org.uk/ http://www.emec.org.uk/ I suspect there is simply more infrastructure for this kind of thing in Orkney that the other islands.