Insolation Global and the United States

Insolation (the solar energy received by an area of 1 m2) varies with the geographic location, weather, orientation of the collectors, and with diurnal and seasonal weather variations. Solar power plants have been built on all five continents, mostly in the high-insolation areas near the equator. There are also plans to collect solar energy on artificial islands in the oceans and in other locations including space stations and solar satellites. 

Landolt-Bornstein—Group VIII, Volume 3C, Renewable Energy, published by Springer, Berlin, 2006. 

For example, if the yearly average insolation in the New York area is 3.5 kWh/m2/d (1,277 kWh/m2/yr), and if the efficiency of the collector is 15%, then each square meter of collector area will produce yearly power of 192 kWh of electricity. 

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