Ballard Power, Nel ASA, Plug Power - a few years ago, this company trio was known to perhaps a few dozen experts. Today, these names are a topic of conversation with millions of small investors almost every day. They are the presumed "hot shit that can get you rich". Seen soberly, all three companies have one thing in common: the hope for the energy of the 21st century - hydrogen, and at least things are going extremely well right now. Some papers even doubled in the past week. The rapid rate jumps should seem scary to many savers. And if you are not yet part of the hype, the question is whether it is still worth getting started. WELT explains what you can do now.