A very interesting approach to solving the problem of lighting when you have no electricity. Intriguing but I’m not sure how viable. Although seemingly cheap at $10 per unit, this is a huge outlay for a relatively immobile source of light. Battery powered torches are a cheaper initial outlay and appeal to villagers even though the cost of batteries drives up the amount they have to spend and the batteries destroy the soil around the village as there is no way to properly dispose of them. I currently have a light from this company which I think is an amazing low cost solution.