solar power generator


 

  

  

  

  

solar power generator

The Sun provides 1,366 watts/meterē at the distance of the Earth's orbit, but less at ground level. US annual average solar energy received by a latitude tilt photovoltaic cell.

The term solar power is used to describe a number of methods of harnessing energy from the light of the Sun. It has been used in many traditional technologies for centuries and has come into widespread use where other power supplies are absent, such as in remote locations and in space. Its use is spreading as the environmental costs and limited supply of other power sources such as fossil fuels are realized.

Energy from the Sun

Theoretical annual mean insolation, at the top of Earth's atmosphere (top) and at the surface on a horizontal square meter. Global solar energy resources. reviews of solar power panels. The colors in the map show the actual local solar energy, averaged through the years of 1991-1993. The scale is in watts per square meter. The land area required to supply the current global primary energy demand by solar energy using available technology is represented by the dark disks.

The rate at which solar radiation reaches a unit of area in space in the region of the Earth's orbit is 1,366 W/mē, as measured upon a surface normal (at a right angle) to the Sun. This number is referred to as the solar constant. [1] The atmosphere reflects 6% and absorbs 16% of incoming radiation resulting in a peak power at sea level of 1,020 W/mē.

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