Making good investment decisions when it comes to green is HARD, as evidenced by the failures of KCPB (Fisker), the government (Solyndra), and the hesitance of YC (why does YC have a history of not accepting green ventures? Why don't they get a partner who's learned in this area? Danielle Fong is obviously brilliant (dropped out from Princeton at age 17... where she was doing her PhD), yet she was rejected by YC -- and went on to get funding from Khosla Ventures and Peter Thiel). The science of investment strategies when it comes to web companies is considerably easier - it is mostly solved to a great number of people, it isn't that easy when it comes to green companies. I think it is logical then, considering that unlike the webspace, this is VC's market, that the terms would be more favorable for them.
Anyway though, I wonder if you've got a bad impression of Khosla because of his sometimes brash mannerisms? His aggressive incisiveness?