The island Eigg in Scotland develops their own renewable energy grid. Master Thesis Students in Dundee University Scotland, explore and design houses for that island that fit in that Renewable energy grid, in a way that it makes the grid more stable in operation. At the same time using vernacular architecture examples, and local resources to materialize the designs. In a workshop with the students current concept designs were evaluated. A very interesting approach, and the island situation makes the challenges very clear. The more since the islanders inhabitants bought back their land , and developed a trust to create a sustainable community !