The correct answer is 42,700 km2.
Use the formula (area) = (power)/(flux): the answer is 3.29x106 MW divided by 77 MW/km2.
This is about the area of the states of Massachusetts, Connecticut, and Rhode Island combined.
Now find the collecting area needed to supply total world power consumption. In 2002 this was 1.38x107 MW.
Use an almanac and determine what U.S. state or states would have to be covered with solar collectors.
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© 2001-2002, 2005 by Wm. Robert Johnston.
Last modified 11 January 2005.
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