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Solar Power Systems

Solar power systems are divided into 3 main groups.

  • Pure solar
  • Stand alone
  • Grid interactive

Pure solar systems are used when the power demand is only required during daylight hours and it is not critical that they under perform during times of poor weather conditions. Normally a system would comprise of a solar array (1 or more modules), a controller and the device required to operate. A good example of this would be a solar pumping system where water is pumped daily. A solar pumping system could also be operated as a stand alone system.

Stand alone solar systems are for when power may be needed at anytime of the day or 24 hours a day. Energy is stored in batteries while available during daylight hours. The stored energy can then be used as required either directly from the batteries or through a power inverter which converts the DC battery energy into AC 240 volt power. A typical system would comprise of a solar array, charge controller, battery bank and inverter. A good example of a this would be a home without any electricity grid connection.

Grid interactive solar systems are a specific type of system with the sole purpose of harnessing the suns energy and feeding that back into the electricity grid. In order to do this connection to the electricity grid is required. The solar array produces energy which is converted from DC to AC by a grid interactive inverter. A typical system would comprise of a solar array and grid interactive inverter.

Alternate sources for supplementary power can also be connected in to increase performance on most systems. Energy from Generators, Wind and Hydro plants are some examples

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