Tsola lights are beautiful, as well as having a huge technological advantage: they are powered only by daylight. During the day they use their internal solar cells to produce electricity. There are no running costs, making them the most environmentally friendly lights around. The Tsola Lights turn themselves on automatically at dusk and run using the power stored during the day. At dawn, they turn off and begin charging again. Furthermore, the lights are incredibly easy to install, due to requiring no power cables.