Renewables Investment Seen Tripling Amid Supply Glut

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The plunge in the cost of wind and solar power that bankrupted more than two dozen manufacturers is forecast to spur a tripling of investment in renewables by 2030 and to reduce the grip fossil fuels have on world energy supply.

Annual spending on clean-energy projects that don’t add to greenhouse-gas pollution may rise to $630 billion at the end of the next decade from $190 billion last year, Bloomberg New Energy Finance said in a report today. That’s 37 percent more than estimated in November 2011 and means renewables would account for half of all generation capacity by 2030.