Elon Musk probably didn’t make a lot of friends in the energy industry when he recently unveiled his company’s new line of residential and commercial batteries.
The Tesla Motors and SpaceX CEO’s Powerwall batteries solve a critical problem for people wanting to remove themselves from the power grid using residential solar and wind generators; the problem of what to do when the wind stops and when the sun goes down.
So far, preorders of the Powerwall batteries have outperformed their projections, selling out through the middle of next year. In preparation for increased demand, Tesla Mo...
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