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compounding t1_iwiuwdc wrote

Reply to comment by Thatingles 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

At this scale, they are claiming/aiming for a levelized (all in 30y lifetime) cost of ~$50\MWh, which would be substantially better than the best existing options.

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