The best part is when the lights in the tents go on, one by one, says Elad Orian. Electricity here, in the hills south of Hebron, was long unreliable. Either it was not available or it was too expensive, produced for just a few hours each day by a noisy, diesel-guzzling generator. That changed when Elad Orian and Noam Dotan, two Israeli physicians who had tired of conflict, came along three years ago and installed solar panels and erected wind turbines. Since then, such facilities have been installed in 16 communities, providing 1,500 Palestinians with electricity.