Activist and author blogs about politics, energy and Earth's resources.
Green sailing: You're doing it wrong
Sun, Dec 21, 2008 at 9:20 PM
Here's some math for you.
Those solar panels will provide 40 kilowatts of energy to the ships crew, .2 per cent of the total ships energy consumption.
$2,400,000 for .2%.
Assuming you had the space, it would only cost $12 billion dollars to build a fully solar powered freighter.
Or you could spend $700k or so on a Sky Sail
and save 20%
of your fuel costs, a couple of thousand dollars per day of operation.
Green for the sake of green can be really dumb sometimes.
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