It is stupid to use lithium like tesla when weight is not a factor. Use of flow battery with non-toxic salt water is cheaper logical solution.
I think people should buy flow battery along with solar so even if they don’t sell to utility, they get to use most of solar energy. They should still connect to utility since solar is not 100% reliable or during long period of cloudy days.
Harvard came up with non-toxic one with like 19watt/kg which is about washer size for 10kwh. It can be placed in garage, basement, outside, or underground.
Non-toxic Aquion Energy’s Aqueous Hybrid Ion from Whitacre at Carnegie Mellon have about same capacity per weight as lead acid. At $1100 per 2.6kwh module around 300lbs, it is still kind of expensive though. Not sure it is internally flow or not though.
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