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Q: “Are we doomed?” A: “We would be, if not for the amazing developments in renewable energy.”
(powering-the-planet.ghost.io)
This is a most excellent place for technology news and articles.
Well if there's not enough sun, wind could be a better option. I don't know much about the climate in slovenia, so either could make more sense.
As for these new kinds of batteries, I don't have the hard numbers on hand, but I know the current installed capacity is really small. So as a product, they're still really new.