On January 13, when addressing reporters during a Q&A session at the Automotive News World Congress (part of the North American International Auto Show) in Detroit, Elon Musk was asked by Gabe Nelson, from Automotive News, about his previous statements regarding hydrogen fuel cell technology for use in personal vehicles—and whether he regretted previous statements in which he claimed that the tech is foolish and inefficient.
Below is a transcript of this interview segment, from a video published by BloombergBusinessweek of Musk’s Q&A session.
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Gabe Nelson: “You’ve been very vocal about the need for other companies to produce EVs to reduce emissions and deal with climate change. If that’s the case, then why so critical of hydrogen fuel cells, which are another pathway to zero emission vehicles? Do you regret having been so critical? Do you stand by those comments?”
Elon Musk: “I don’t want to turn this into a debate on hydrogen fuel cells, because I just think that they’re extremely silly [audience laughs]. There’s multiple rebuttals of it online. It’s just very difficult to make hydrogen and store it and use it in a car. Hydrogen is an energy storage mechanism, it’s not a source of energy. So you have to get that hydrogen from somewhere.
If you get that hydrogen from water, you’re splitting H2O. Electrolysis is extremely inefficient as an energy process. If you took a solar panel and used the energy from that solar panel to just charge a battery pack directly—compared to try to split water, take the hydrogen, dump the oxygen, compress the hydrogen to an extremely high pressure—or liquefy it—and then put it in a car and run a fuel cell…it is about half the efficiency. It’s terrible.
Why would you do that? It makes no sense. Hydrogen has very low density. It’s a pernicious molecule that likes to get all over the place. If you get hydrogen leaks from invisible gas, you can’t even tell that it’s leaking. But then it’s extremely flammable, when it does, and has an invisible flame.
If you’re going to pick an energy storage mechanism, hydrogen is an incredibly dumb one to pick. You should just pick methane. That’s much, much easier. Or propane.
The best case hydrogen fuel cell doesn’t run against the current case batteries. So, then, obviously, it doesn’t make sense. That will become apparent in the next few years. There’s no reason for us to have this debate. I’ve said my piece on this. It will be super-obvious as time goes by.”
Curt Robbins is author of the following books from Amazon Kindle:
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