this post was submitted on 12 Feb 2025
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Why do you need a fusion reactor for electrolysis?
Because otherwise you're spending more energy converting water into a hydrogen then you get back from turning hydrogen into water.
You still do with Fusion power but at that point you have so much energy it doesn't matter how inefficient it is. Seriously even using nuclear power it doesn't work out as economically viable. It's really a wasteful and inefficient process.
There have been some recent advances on hydrogen production. I don't think this (sorry for the MSN link) is the one I heard of, but is an interesting example where cheaper catalysts are improving the efficiency of hydrogen production.
Now, I don't know if or when hydrogen will be more cost-effective than batteries, which are also experiencing massive advances. This is why I'm going to take the comment someone on Lemmy made about buying used EVs for the next little while - it's cheaper, they're lasting longer than predicted, and the advances lined up for the next few years are significant.