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So the idea is to use excess power to make and store hydrogen? How efficient is making hydrogen?
by binarymax 3y ago
So the idea is to use excess power to make and store hydrogen? How efficient is making hydrogen?
- toomuchtodo 3y ago> How efficient is making hydrogen? https://www.iea.org/reports/electrolysers https://www.iea.org/reports/electrolysers https://www.sciencedirect.com/science/article/pii/S2542435121003068 https://www.sciencedirect.com/science/article/pii/S254243512...
- generic92034 3y agoIsn't it infinitely more efficient than just letting the potential power be wasted? If supply surpasses demand eventually wind farms are shut down. That has to change, IMHO.
- ZeroGravitas 3y agoYeah, we need to generate a lot of green hydrogen anyway, to decarbonise fertilizer, steel production, aviation fuel and a bunch of other stuff (Ideally we'd force fossil fuel producers, the number one users of hydrogen today, to replace their hydrogen with green hydrogen as part of the process of kick starting this). And in that world, using some of your stored hydrogen or ammonia as emergy reserve makes sense, though you'd want to avoid actually using it too much as if you do then you'd probably have been better spending the money on more generation and/or batteries.
- ch_sm 3y agoIndustrial electrolysis is roughly 70% efficient. Generating electricity from it with a fuel cell is about 40%-60% efficient. There are (realistic) newer approaches to improve on this (up to 85% for fuel cells). And yes, it’s infinitely better than nothing. [0] https://en.wikipedia.org/wiki/Electrolysis_of_water https://en.wikipedia.org/wiki/Electrolysis_of_water [1] https://en.wikipedia.org/wiki/Fuel_cell https://en.wikipedia.org/wiki/Fuel_cell