According to scientific forecasts, our energy supply will be determined by an energy mix in a few decades. Renewable energies and, in particular, solar energy will play an increasingly important role. In less than two weeks, sunlight provides the same amount of energy as all existing fossil fuel resources on earth could generate. Of course, this is pure theory! The fact remains, however, that sunlight is an extremely suitable source to cover the world’s energy needs in a sustainable, clean and safe manner.