@vinyl to Microblog MemesEnglish • 2 days agooh no! think of the stock market!imagemessage-square382arrow-up11.7Karrow-down181
arrow-up11.61Karrow-down1imageoh no! think of the stock market!@vinyl to Microblog MemesEnglish • 2 days agomessage-square382
minus-square@[email protected]linkfedilinkEnglish2•6 hours ago2 giant lakes. 1 uphill from the other, or one underground. When there’s excess energy you pump water uphill. When you need more you let it back down
minus-square@[email protected]linkfedilinkEnglish1•6 hours agoHow efficient is making hydrogen? If you don’t need a huge facility, it might be easier to just store it that way, so you don’t need giant lakes everywhere.
minus-square@TayblinkEnglish2•3 hours agoLess efficient than pumped hydro. Appears to be about 40% for green hydrogen in the round trip vs 80% for pumped hydro with a quick google search.
minus-square@[email protected]linkfedilinkEnglish1•2 hours agoI am curious what’s involved in the “round trip”? Do you mean to fuel other machines directly with hydrogen?
minus-square@TayblinkEnglish1•13 minutes agoEnergy to hydrogen back to energy, so electrolysis to a hydrogen fuel cell. I think burning hydrogen directly is even less efficient.
2 giant lakes. 1 uphill from the other, or one underground. When there’s excess energy you pump water uphill. When you need more you let it back down
There’s a lake in the UK that does this
We can use Niagara Falls for that!
How efficient is making hydrogen? If you don’t need a huge facility, it might be easier to just store it that way, so you don’t need giant lakes everywhere.
Less efficient than pumped hydro. Appears to be about 40% for green hydrogen in the round trip vs 80% for pumped hydro with a quick google search.
I am curious what’s involved in the “round trip”? Do you mean to fuel other machines directly with hydrogen?
Energy to hydrogen back to energy, so electrolysis to a hydrogen fuel cell. I think burning hydrogen directly is even less efficient.