When the sun’s energy production could be harnessed on earth, mankind would probably have taken care of energy supplies. The associated promises sound tempting: because with nuclear fusion, electricity can be supplied constantly, regardless of the weather and time of day, and it does so without emissions and at relatively low prices. It is the ultimate opportunity to become independent of fossil fuels, the hope of an energy revolution – and with it a billion-dollar market. The Darmstadt location could play an important role in the race for this disruptive nuclear fusion technology.