Think tank warns of turbulent outlook for US renewable energy industry

The recent rapid expansion of the US renewable energy sector could be thrown into reverse unless policy makers take urgent steps to reform subsidy regimes which have delivered a cycle of "boom and bust" that could yet result in a "clean tech crash".

The real problem for nascent markets: being crushed by the incumbent market. In this case, the fossil fuel industry, and all the subsidies, direct and indirect, that the incumbents receive from the government.