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eat_more_ovaltine t1_j1dvbpt wrote

Reply to comment by JayGeeCanuck22 in Exxon’s bad reputation got in the way of its industry-wide carbon capture proposal by Sorin61

Forgive my ignorance. Why is hydrogen sourced from renewable energy a scam?

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PleasantAdvertising t1_j1dwuws wrote

Because we can use those renewable directly. Hydrogen only makes sense if there's energy abundance. We're in an energy crisis with no end if you haven't noticed.

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onegumas t1_j1es15k wrote

What crysis? We have da and but not crysis. Hydrogen is energy carrier or you can say energy storage. We need it for making renewable energy always on demand. Hydrogen is one of the ways, not only solution.

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fgdfghdhj5yeh t1_j1ervz4 wrote

yea, once we have energy abundance running directly off hydrogen or cups of water lmao. if we get actual fusion lots of stuff will change. Power efficiency won't be a care anymore for most electronics and many other things. Would be very interesting to see

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PleasantAdvertising t1_j1esi2r wrote

Hydrogen should be looked at for high power applications like airplanes/rockets/cargo ships. If we have fusion I can definitely see a future in that.

That said it's wholly unrealistic to think about today. It's just not efficient or viable.

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fgdfghdhj5yeh t1_j1etzh3 wrote

Yea there's better stuff to look at, like desalting ocean water with the abundance of extra solar energy during the day... but... it'll be a while until they give a shit about that. Can't wait for the ridiculous pipe from the mississippi to the west before they realize there's an ocean next to cali LOL. You know they're gonna do it

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eat_more_ovaltine t1_j1e3bpy wrote

What about using the hydrogen for non energy reasons that electricity can’t replace?

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Lurk3rAtTheThreshold t1_j1fgkfc wrote

Because hydrogen made through electrolysis takes a huge amount more energy than you get out of the resulting hydrogen. This makes it quite expensive.

Also the fact that they always say hydrogen can be green (which is true), but 95% of the hydrogen we have is made from natural gas which releases all the carbon.

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Mr-Logic101 t1_j1hogxa wrote

If you have abundant electrical energy, say via a nuclear reactor which can’t be cycled down during low demand like night or some thing like nuclear fusion, it is perfectly valid route

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JayGeeCanuck22 t1_j1e2mrf wrote

The oil and gas industry is sourcing it from natural gas. I suppose you could produce it using emissions free energy, but you're probably better off just using that renewable energy directly .

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MyPacman t1_j1fm0fs wrote

Except sometimes the timing for the renewable energy isn't ideal. Being able to siphon that energy into storage would be one solution.
Another is pumping the water back up into the reservoir. But that only works if it isn't already full.

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Layer_4_Solutions t1_j1ge7ev wrote

Because it isn't actually sourced from renewables. People keep selling that, while actually sourcing the hydrogen from natural gas.

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Cooletompie t1_j1ekvr9 wrote

Because that Redditor rather sees South America destroyed for lithium than accepting an efficiency loss with hydrogen.

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