Multiple clean-tech firms deemed unsustainable

Josh Peterson Contributor
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High profile bankruptcies, plunging sales, and canceled acquisitions are raising questions of whether alternative energy can fulfill its promise as the next great growth industry for Massachusetts and the nation.

Struggling with dwindling subsidies, a weak economy, and fierce competition from China, the US alternative energy industry appears to be entering a period of consolidation that is challenging the survival of some firms and claiming others.

Full Story: Clean-tech firms lose luster