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MashimaroG4 t1_iwik9pj wrote

Reply to comment by palmej2 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

True, they make a "megapack" or something that is being installed grid scale. I own two powerwalls and Solar (bought before Elon went off the deepend, but I think the economics are still about the best for Tesla Solar). So my generation is on the roof (I never charge from the grid, except for an impending storm). My current reading match up about with the spec sheet (for Month to date in Nov : 287kWhr in and 250kWhr out (and battery 87% charged as of noon, it normally charges to 100% by about 1pm if I'm not doing a lot of high energy items at home)

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