Clean-tech IPOs have yet to prove themselves.
Sure, investor excitement is on the rise with Tesla Motors, Solyndra, Amyris and Ameresco preparing to sell shares to the public. Another potential blockbuster, Silver Spring Networks, is said to have chosen its investment bankers...
...What the Roadster did is show there is a high-end market for high-end electric cars, says Straser, who has invested in green-tech firms such as ZeaChem, Nanosolar and OPX Biotechnologies.
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