Kangaroo Island is one of the great icons of Australian tourism. As Andrew Boardman, the chief executive of the Kangaroo Island council, says: “You can’t buy a name like that.” But now the third-biggest island in Australia, which lies just 120kms from Adelaide, wants to make its mark in a different way: by supplying 100% of its electricity needs and much of its transport fuels through locally sourced renewable energy. The island is calling for…