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View Diary: Solar Energy Cheaper than Coal? (351 comments)

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  •  No, but it is critically important (1+ / 0-)
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    wondering if

    Efficiency (in the sense of power per unit volume) is why electrics and other such technologies aren't near supplanting petroleum for vehicle fuel: gas has such a high energy density that at the moment it easily outcompetes other portable fuel sources.

    Efficiency in terms of of power generated per area is a similar issue.  Not everyone lives in sunny southern California.

    Of course I'm all for people using as much solar as possible, but there are trade offs and limits on what's possible with it.

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