Clean-tech investments have underperformed, but that doesn't mean they're underwater.
FORTUNE -- Conventional wisdom is that venture capitalists have taken a bath on clean-tech, thanks to high-profile flops like Solyndra and Fisker Automotive. But new data suggests that such examples are exceptions rather than the rule.
Cambridge Associates today published its first-ever set of performance statistics statistics on investment into private cleantech companies, based on a data set of over 1,200 deals MORE
