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I wasn't very clear, I think. Yes, you can make higher density biodiesels and there are even denser biofuels on the horizon. What I mean to say was that you can

by markbnj 11y ago

I wasn't very clear, I think. Yes, you can make higher density biodiesels and there are even denser biofuels on the horizon. What I mean to say was that you can't compare the accumulated energy of a few millions of years of biomass with what you can extract from what is growing on the planet right now, even if you could turn it all into fuel. The world is currently consuming around 100 million barrels of petroleum per day. http://www.eia.gov/cfapps/ipdbproject/IEDIndex3.cfm?tid=5&pid=5&aid=2 http://www.eia.gov/cfapps/ipdbproject/IEDIndex3.cfm?tid=5&pi...

marcosdumay 11y ago
That's not really a valid concern in a thread about niche applications. Yes, we have a scale problem, and it must be fixed with renewables that scale, not with bio-fuels. The fact that the ones that scale are not fitted for niches is not reason to claim that we can't fulfill niches, and the fact that some niche fuels do not scale is not reason to claim that we can't get renewables at scale.