Those batteries dont add up to the answer for all people as yet. They may work for the rich who can afford a few and get off the whole grid . When you look at them for real you can buy kilowatts a lot cheaper than their total output, initial cost and considering night time and winter etc. They have mentioned $3000 for one unit and its got the market excited and people want in,but there are hidden costs including installation,then maintenance and eventual replacement.That battery will not quiet run the whole house of appliances either.I think maybe in reality unless you are a desert dweller in full sun, you'd need a few of them and maybe a back up wind generator and a conventional generator too.
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