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Solar Panels

Solar panels collect energy from the sun and actively convert it into electricity. They are comprised of several individual solar cells which do the collecting. Solar cells are arranged in a grid like pattern on the surface of the solar panel. These solar voltaic cells collect the sunlight during the daylight hours and convert into electricity.

Typically solar panels are made with crystalline silicon (which is used in other production industries) and gallium arsenide (which is made exclusively for solar cells). More effective solar panels are made of amorphous silicon alloy and the most efficient panels (also the most expensive) are made of gallium arsenide. 

When comparing solar panels keep in mind the more expensive panels generally do a better job collecting the sunlight. Although they may look identical, quality, age and technology all play a role in the cost of the cell. The best way to compare the value of two solar cells is to measure the dollars per watt ratio. Currently the best deal is about $4.30 per watt.

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