I think they are a great 'start' (even though its been around for a while already - this should drive prices down though). I never really considered batteries that enviro friendly but I tell you I really hate paying crazy utilities and if I was building a new house i'd love to put cash into the build at the time go off grid with everything that was feasible. yes there is a lot of ongoing maintenance and I know a lot of people don't realise its large sacrifice going full gridless.
those enzyme batteries sound pretty cool, would have been even better if Elon got onto something like that before building his massive battery plant.
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