Title: There has been hype around hydrogen fuel cells being a source of green power for decades, but the hype cycle is currently ramping up significantly. Hydrogen fuel cell stocks such as PLUG and FCEL have gone up 10x despite the lack of any significant new breakthrough technology and a history of loss making and value destruction.<p>Just today, Bank of America research released a 103 page &quot;Hydrogen Primer&quot; in which they predict that the hydrogen space will generate $2.5 trillion in direct revenues and $11 trillion of indirect infrastructure potential. They believe that a tipping point is coming soon because of the falling cost of renewable energy and electrolysers used to produce &quot;green&quot; hydrogen, as well as better efficiencies in fuel cells.<p>My question is for the experts in the crowd here, either based on engineering experience or on first principles and physics, does this seem likely to you? Why do we really need hydrogen? It seems we are getting to the point where wind power and particularly solar power are now cost effective. Once we have better batteries for storage, what problem do we have left that requires hydrogen to solve? Is this just a giant promotional bubble being pushed by Wall Street and unscrupulous companies trying to sell a dream? I may sound skeptical but I genuinely don&#x27;t know and would like to hear from people with more expertise.
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