Solar energy on Earth

The power emission from the sun is 1.37 kW/m 2 on the surface of the sphere, which has the sun as its centre and the average radius of the earth trajectory. The power hits a circular disc with an area of of 1.27 x 10 14 m 2 . The power emitted to the earth is thus 1.74 x 10 17 W.
source: Wind See also XlnkS6B4

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