Grid Coupling

Photovoltaic systems connected directly to the grid. Electricity not used domestically is fed into the grid (also called feeding the grid), but if electricity needs are not met by the photovoltaic system then current is provided by the grid. In order to feed the direct current (DC) of photovoltaic systems into the grid, it must first be transformed into alternating current (AC) by an Inverter and then the voltage must be increased to that of the grid. In accordance with the Renewable Energy Sources Act (Erneuerbare-Energien-Gesetz - EEG), which became law on April 1, 2000 in the German Parliament, power suppliers must pay $ 0.49 / kWh of Solar Current fed into the grid.

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