Nuclear fusion attracts Federal Economics Minister Habeck to Garching. The path to a ready-to-use reactor is still long and expensive.

"The question is no longer if, but when and where it will be built will," says Sibylle Günter, scientific director of the Max Planck Institute for Plasma Physics (IPP) "We want to recreate the sun with an inexhaustible source of energy," says Florian Herrmann, head of the Bavarian State Chancellery.