2009/9/28 Horace Heffner <hheff...@mtaonline.net>: > > On Sep 27, 2009, at 5:49 PM, mix...@bigpond.com wrote: >> One thing that could be done now, and probably wouldn't be a waste would >> be >> algoil. This could make a significant dent in fossil fuel consumption, and >> because it targets cars and trucks, isn't likely to be quickly replaced by >> CF, >> even if that does pan out. > > Yes, it is another viable form of solar energy that is plodding along in > development.
Not nearly as viable as PV though, at least not on land, if you consider land productivity. According to the attached "How far a car can drive" graph, PV is 50 times more productive than the most productive biofuel: one hectare (= 100m x 100m = 2.5 acres) of land allows a car to drive 20-70 thousand km on biofuel, versus 3 million km with PV. Source: http://www.nanosolar.com/company/blog/going-all-electric. Michel
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