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Wind and solar power are disrupting electricity systems (150 years ago： …

- - - - over the next few decades:
        requires huge amounts of investment
        
        A carbon-free future：an era of clean, unlimited and cheap power
        
        $20trn hitch
        
        Normally investors like putting their money into electricity because it offers reliable returns
        
        green energy has a dirty secret
        
        The more it is deployed, the more it lowers the price of power from any source.
        
        inconvenient truth: remain profitable--subsidies
        
        2 more items...
      - generate only 7% of the world’s electricity
      - growing faster than any other energy source and their falling costs