The world’s largest demonstration plant for a new kind of renewable energy storage is up and running in the west of the China. Called liquid-air energy storage (LAES) the plant uses renewable electricity to compress air to extreme densities until it turns to liquid. It can then be rapidly released to power a turbine and discharge that green energy back into the grid.
I wouldn’t produce 1g silver when I produce 1g gold in the process, I make more money with the gold,. Thats why it isn’t competitive.
efficiency of green hydrogen is low and storage of it is hard, fuel cell efficiency is also low I think it ends up with about a 20% efficiency but don’t quote me on that. Also you’d like to sell it to the industry anyways. But they take it from cheap gray sources right now so whatever.
The scales of electrolysis aren’t as big yet (maybe now idk, but 2-3 years ago they weren’t), compared to methane processes. They also don’t produce their own energy, they take energy instead! (Get 2 H2 from CH4 and burn the C to CO2, compared to electrolysis which takes energy)
If it were competitive to run that process for storage, H2 prices would take a dive. H2 prices are just a symptom, not the cause for H2 being not competitive for storage.
Fuel cell efficiency is certainly not commonly as low as 20%. As far as I understand it is commonly 40-60%.
Electrolysis requiring energy is the whole point of a storage technology.
Here your source. Well you were talking about H2 being the efficient option. There is energy efficiency, volumetric efficiency, life cycle (in the sense of how long does the plant last, wind turbines last for 20-25 years, how sustainable are the resources and are they recyclable), even plant space needed.
As it stands now H2 prices need to go up for it to make green H2 competitive. Idk what you are on about, milk prices are a symptom of farmers wanting enough compensation for their work, that’s why you find milk for different prices depending on the form of agriculture. More land for the cow and organic will mean its more expensive, you can’t make this any more competitive because it isn’t. Grey H2 also produces energy in production and you can’t compete with that, hence the price of H2 needs to go up e.g. via CO2 tax.
Storage storing energy is indeed the point of it, but the question is also how much money do you want to pay for the energy? Did you buy any oil recently?
Appears as if I was not off that much. 60% fuel cell efficiency, 38% cycle efficiency.
I think you got it a bit backwards. The point of storage is just that: storage. Using something that does not store energy but release energy from carbon sources is not storage. That is energy “production”. Energy storage is a highly researched subject because there is an upcoming large demand for it, both in a scale of 24h, mid-term and also seasonal. This arises from wind and solar power delivering power in a fluctuating extend.
Renewable energies (which energy storage is a part of) is way more isolated from far off sourced oil and gas. There is a reason why Europe is massively investing in renewables, it is a strategic imperative to do so. Storage technologies are a key technological component to got from 50% to close to 100% renewable energy and insulating the energy base from exactly that world market on old dirty energy. That renewable energy is leading to an explosion in energy prices is not really supported by reality, is it? After all, gas is pushing electricity prices up right now, not wind or solar power.