Tesla is an American company who specialise in electric cars and so called "power train" production. Last Thursday they announced a special battery that will harness and store the gains made from solar energy panels. It is designed to be used within domestic households as well as on a more indutrial scale. It is very likely based on lithium-ion (Li-Ion) technology and therefore might not really merit the fanfare it was given on 30Apr2015. Nevertheless it does focus our minds on the problems of storing electricity in huge quantities needed for a car or undeed , a household. That these batteries can be dangerous should not alarm us too much - as nearly everything we do with regard to electricity carries some danger.
Yet here we be, in the year 2015, and still a long way from clean energy. These batteries have to be manufatured of course. The's still much to be said for pumping water uphill thus to reclaim the energy spent in a gravity hydro-power system! More as and when it comes to (wait for it) light!
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