How much energy do the planets each get from the Sun compared to the Earth?

If we use '1 Unit' as the norm for the Earth, then the insolation for the other planets follows the inverse-square law: 

Mercury        .38        7.1 times Earth
Venus          .72        1.9
Earth         1.00       1.00
Mars          1.5        0.44
Jupiter       5.2        0.037
Saturn        9.5        0.011
Uranus        19.1       0.0027
Neptune       30.0       0.0011
Pluto         39.4       0.00064
So on Pluto you would receive 0.00064 times what we get here on Earth as the solar heat delivered to you to keep you warm!
Copyright 1997 Dr. Sten Odenwald
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