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DukeLukeivi t1_iwl3olb wrote

Reply to comment by Dischordance in Italian startup Energy Dome claims its CO2 grid storage batteries are cheaper than lithium-ion, and need no rare minerals, being made from just off-the-shelf steel components, water & CO2. It's opening its first 200 MWh facility in Sardinia in 2023 by lughnasadh

You don't have any numbers showing a lower start up cost, but blindly assert it must be better, while "waiting for numbers", wherein numbers projected are worse for your case - yep.

"Using it with carbon capture" is less efficient than the system which does both since much of the power your saving is then earmarked for capture, not going back to the grid.

Try another analogy: peaker planets are incandescent bulbs, your compact florescence are better to be sure but led have no mercury and last longer and use less power still.

Why are you so defensive about finding out there are even better options available?

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Dischordance t1_iwltoze wrote

Because I doubt that a more complex system that requires extreme cold, and excess thermal energy and the storage of both will have both efficiency and cost advantages over a similar, less complex system that can function at ambient temperatures.

As this is a battery, it would be a one time carbon capture energy price, and then would be a form of sequestering it. It wouldn't be a constant input.

And until both are proven in the real world, where both are currently in the process of doing so. I don't think claiming one is so much better that the other has no use is warranted.

That is a better analogy than hybrids. Still don't think it's very applicable based on what I've seen.

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