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A report by Bloomberg ##tech Energy Finance has shown that businesses and governments put $ 330bn into clean energy last year . The bulk of that funding ( about $ 200bn ) went to industrial - sized projects that provide clean power to utilities . About a third of the funding came in 2008 amid increasingly aggressive support for solar and wind projects by the Chinese government . Investors in the US and European countries spent about half of China ’s clean energy funding . Another $ 67bn went to install solar panels on rooftops and to smaller solar projects on the ground . The public markets added another $ 14bn in funding to clean energy companies . In comparison to the growing number of financing options , venture capitalists and private equity investors were still unwilling to invest much into energy tech projects .