In 2001, Bear Grylls bought a remote Welsh island for £95,000; after four years rebuilding its only house, it now runs off-grid on wind, solar and harvested rainwater

In 2001, Bear Grylls bought a remote Welsh island for £95,000 when its only house was a “complete wreck”. He and friends spent four years rebuilding it. The island is now an off-grid family retreat, with the house powered by wind and solar energy and rainwate…