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Posts tagged “Envergent”

By Robert Rapier on Oct 17, 2011 with 18 responses

Why I Didn’t Short KiOR

In a recent column on the metric of “success” in Cleantech, I wrote that the measure of success that will matter to most people is whether the company sells energy at an affordable price: I simply don’t think that the fact that one can talk up a company and then IPO it at a profit is the proper metric for success. Some of those companies that have been IPO’d are grossly overvalued. Many of them won’t be around for long. (In fact, I wrestled hard this week with a decision to short one of them; I ultimately decided not to — but not because I don’t think the company is grossly overvalued). So is a company that is IPO’d, makes… Continue»

By Robert Rapier on Sep 5, 2010 with 56 responses

Crude Oil From Biomass: Evaluating KiOR

Cracking Biomass Back when I worked in a refinery, I used to spend a lot of time thinking about how biomass would behave in certain refining processes. A fluidized catalytic cracker (FCC), for instance, takes oil and subjects it to heat and a catalyst to fracture larger hydrocarbons into smaller ones that can serve as gasoline blending feedstock (among other things). Another refining unit is a delayed coker. Very heavy oil is subjected to even higher temperatures than in the cracker, and once again the hydrocarbon chains are cracked into smaller molecules useful for further processing into gasoline and diesel. Petroleum coke, similar in appearance to coal, is also produced. Given the extreme conditions of these units, either of them… Continue»