Photovoltaic Solar Panels – How Do Solar Panels Work?

The basic answer is specific materials placed in direct sunlight will convert the light to electricity which can be used to power electronic devices. But it’s a little more complicated.

Today’s production of solar panels consists of using supremely pure silicone semi-conductor materials. Electrons are discharged from silicon semi-conductors when placed in sun light. This creates a potential as well as flow of electricity. A solar panel is also called a ‘direct energy conversion device’ since all of these effects are taking place on an atomic level minus any moving parts.

PV panels used to be only available in space race technology. Satellites and space stations used them for their reliable and continuous conversion of solar power. The sun’s radiation is 50% stronger in outer space giving solar energy an advantage in that environment. Solar energy devices have been used extensively in the space program.

People looking to live a good distance from the power grid, more than a mile, are more likely to use solar energy. Power transmission cables cost way more than installing a photovoltaic power array. If you are a significant distance from an electrical grid then it’s a good idea to consider solar energy for your power source.

To generate cost effective solar power, a sunny location is neccessary. Beam radiation is the most effective since it’s the strongest. Most of Western America qualifies…those states are good candidates for the use of solar energy, but northern climates and coastal states are usually quite cloud-laden and sadly, not worthy of 100% solar-reliance. You can search online for “solar insolation rates” to determine if your area is suitable for a solar energy system.

Solar panels can be set-up to meet your specific needs. The most common DC systems are rated 12 volt, 24 volt, and 48 volt. Solar panels have efficiencies in the range of 12-14% and can have a life expectancy of over 20 years.

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