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aunty_helenyesterday at 9:27 PM9 repliesview on HN

Kinda glad this is the case. When people go out of their way to avoid common sense they should be punished.

Hydrogen is such a terrible idea it was never getting off the ground. There seems to be some kind of psychosis around it being the next oil and therefore greedy people want to get in early on. But this blinds them to the basic chemistry and physics.


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belorntoday at 12:25 AM

People looked at how the cost of wind and solar went down and made a assumption that green hydrogen would follow. The reasoning was that the cost of green hydrogen was energy, and thus at some point green hydrogen would be too cheap to meter.

The whole energy plan of central/northen Europe, especially Germany, was built for the last several decades on the idea that they would combine wind, solar and cheap natural gas and then replace the natural gas part with green hydrogen. In Sweden there were even several municipalities that spear headed this by switching mass transportation and heating towards hydrogen, initially with hydrogen produced through natural gas, as a way to get ahead on this plan.

The more sensible project were the green steel project. As experts in green hydrogen said consistently said through those decades, is that green steel would be the real test to make green hydrogen economical. The economics of burning it for energy or transportation would come several decades later, if ever. The green steel project however has not ended up as planned and gotten severely delayed and has seen a cost increase by an estimated 10x. municipalities are now giving up the hydrogen infrastructure and giving it an early retirement, as maintenance costs was significantly underestimated. There is very little talk now about replacing natural gas with green hydrogen, and the new plan is instead to replace the natural gas with bio fuels, hinted at carbon capture, at some unspecified time.

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marcosdumayyesterday at 9:45 PM

> There seems to be some kind of psychosis around it being the next oil

There's a very well financed propaganda campaign.

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nandomrumberyesterday at 10:41 PM

There is a great way to store, transport, and use hydrogen:

Bind it to various length carbon chains.

When burned as an energy source the two main byproducts are carbon dioxide which is an essential plant growth nutrient, and water which is also essential to plant growth.

Environmentalists will love it!

And they can prise my turbo diesel engines from my cold dead hands.

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HPsquaredtoday at 2:48 AM

Synthetic fuels (including hydrogen) do still make a lot of sense for heavy stuff like trucks, buses or trains, and aircraft where the energy density is a big plus. Those are where you'd expect to see hydrogen take off first, not passenger cars. Same as how diesel started in trucks - expensive engines but economical when amortized and worth it for heavy usage applications.

If they couldn't crack those areas, no chance in the highly competitive passenger car space.

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dehrmannyesterday at 10:36 PM

> Hydrogen is such a terrible idea it was never getting off the ground.

It's coming from Toyota because Toyota can't wrap its head around not making engines. Ironically, the place hydrogen might work is airplanes where the energy density of batteries doesn't work.

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dmixtoday at 1:17 AM

> When people go out of their way to avoid common sense they should be punished.

Sounds like it was mostly just people reacting to government incentives. Subsidized markets acting irrational.

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footayesterday at 11:06 PM

> Hydrogen is such a terrible idea it was never getting off the ground.

See: the Hindenburg disaster

afternote: There's the potential for an amazing pun in here, but I don't think I quite did the opportunity justice.

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ForHackernewsyesterday at 9:56 PM

Why is it such a terrible idea? In theory you can generate it via electrolysis in places with plentiful renewable energy, and then you've got a very high-density, lightweight fuel. On the surface, it seems ideal for things like cars or planes where vehicle weight matters. Batteries are huge and heavy and nowhere near as energy dense as gasoline.

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