How Photovoltaics works

Photovoltaics involves converting sunlight into electrical energy using solar cells. This is an innovation that literally outshines other energy technologies. Instead of obtaining your electricity from a source several kilometres away, you can produce the energy at your premises.

The Photovoltaic effect

Photovoltaic modules lie at the heart of any photovoltaic system. They consist of a variety of solar cells, which convert the sun's energy into electrical energy (photovoltaic effect). The main component of a solar cell is silicon, which is fused from sand and becomes a conductor when exposed to solar irradiation. The top surface of a solar cell is sprayed with phosphorus, the bottom is boron. The top has five electrons and the bottom has three electrons. To achieve a balance (4 electrons on either side), silicon (which has 4 electrons) is used as a semiconductor transport medium. This means that when the sun shines, the direct current flows into the connected device.

Components of a photovoltaic system:

Before sunlight can be converted to electricity, it has to be directed through the solar module.

  • The solar module, the electricity generator, is the blue element on a solar installation, which is mounted securely using a mounting system. Each photovoltaic module consists of several interconnected solar cells. Solar cells function by converting sunlight into direct current. However, this electricity cannot be used directly and is therefore routed to the inverter.
  • The inverter is used to convert the direct current from the solar modules into useable electricity (alternating current) with the minimum possible loss.
    Meters similar to normal electricity meters are used to accurately record the system yield and the electricity fed into the grid. The feed in tariff mechanism which is already in place in a number of Asian markets guarantees your remuneration for each kWh fed into the grid.
  • Monitoring systems check that the system is operating correctly, immediately report any faults and thereby ensure the best possible yields.


Conergy´s benefits: Conergy produces all the components of a solar energy system in-house and ensures that these are perfectly matched during development. Why not find out for yourself!

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