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Solar Hybrid Systems

1/19/2011

The three main renewable energy sources are sun, wind and water. Typically, each source is used as a single system. Government energy experts now believe that using system combinations or "hybrids" offers a more effective solution. Various solar hybrids are currently in use.
      Solar and Wind Hybrid
According to the U.S. Department of Energy, combining wind with solar photovoltaic (PV) technology has the advantage of using seasonal wind speeds and hours of sunshine in the United States to produce the maximum amount of electricity. Also, when there is insufficient wind or sun, the hybrid systems provide energy by connecting to batteries and generators powered by a conventional fuel, such as diesel.
      Solar Hybrids in Rural Africa
The developing world is severely affected by climate change and rising fossil fuel prices. The latter, particularly, obstructs agricultural development. Using renewable energy in rural areas is an important method of overcoming this problem. A solar hybrid system combining solar PVs and vegetable oil generators proved a successful solution in providing electricity to a number of rural areas in Africa, according to the SolarSaver website. The key advantage of solar hybrid systems is that they remove the need to lay expensive electric cables in remote areas, as they operate independently of an electricity grid.
      Photoelectric and Thermoelectric Generators
Another form of solar hybrid uses photo and thermoelectric generators. These use both the visible and infrared solar rays. A Fresnel lens separates the two types of rays, sending the visible rays to PV cells and the infrared rays to thermoelectric modules, according to the ENergy Focus website. This hybrid system combines solar light and heat to produce energy.
 

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