sentences:  It is not connected to any electrical grid, so its sole electricity is supplied by solar panels and a small wind turbine.It is owned and managed by the Commissioners for Northern Lighthouses, who make regular maintenance visits to the property throughout the year.In July 2017 the island was put on sale for £325,000 GBP with Estate Agents Galbraith, which is comparable in price to a same price as a two-bedroom apartment in Edinburgh, and less than a two-bedroom apartment in London.