I agree with you but I think your odds are way too generous :). Vinod Khosla is another high profile VC that has taken some heavy positions in clean tech as wel

I agree with you but I think your odds are way too generous :). Vinod Khosla is another high profile VC that has taken some heavy positions in clean tech as well but he has kept his ear to the ground and has invested in quite a few of internet/tech startups as well. Problem with clean tech is that most of it is capital intensive and many times you have no idea if something will work until you spend $10M on it. You just can't fail fast. After you do your R&D, few years will pass. Then, if you have something, you will have to raise another huge round so you can build it out. That's very cap intensive and again, takes long time. Most funds operate on a 7yr timeline. With cleantech, you'll be lucky if you make an exit after 10 years. And still, the biggest issue, as I pointed initially, is the lack of exit points. IPOs are very hard these days and who knows what the future will look like.