At Technology Review's 2008 Emerging Technologies Conference, EmTech08, experts debated the idea of a clean-tech bubble. Here is CNET News' Senior Writer Martin LaMonica and author of the blog "Green Tech" analysis of their opinions and the related issues:

Clean-tech bubble talk is a red herring
It's fashionable these days to ponder whether there's an investment bubble in clean tech. But I believe this discussion obscures a bigger problem for the clean-tech crowd: not enough money.

A panel of venture capitalists at the Technology Review EmTech 2008 conference on Thursday took the bubble question head on. The response from investors tends to be nuanced: No, there isn't a bubble, but there are some silly company ideas getting funded...read more

GS Early of KCI Investing gives his insight on the panel in his blog "At These Levels":

Is There a Clean-Tech Bubble?
This was the last breakout session of the EmTech 08 Conference and I stuck around for this panel of venture capital guys to see what they were seeing in emerging energy technology companies.

On the panel was David Berry, Principal at Flagship Ventures, Robert Day, Principal at @Ventures, and James Kim, Senior Partner at CMEA Ventures...read more