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‘If 1.5m Germans have them there must be something in it’: how balcony solar is taking off
(www.theguardian.com)
This is a most excellent place for technology news and articles.
uh, you clean the panels for one. Outside of that, you import external energy, or use other generation sources.
And at that point you need a power grid and at that point you may as well centralize the generation to utilize economies of scale.