A grid connected system is connected to a large independent grid (typically the public electricity grid) and feeds power into the grid. Grid connected systems vary in size from residential to solar power stations. This is a form of decentralized electricity generation. In the case of residential or building mounted grid connected PV systems, the electricity demand of the building is met by the PV system. Only the excess is fed into the grid when there is an excess. The feeding of electricity into the grid requires the transformation of DC into AC by a special, grid-controlled inverter.
This illustration shows a grid connected solar system during peak sunlight hours. Producing enough electricity for the household, and feeding any surplus power back onto the main grid
- Solar PV Array
- Solar Grid Connect Inverter
- Electricity Meter
- The Main Grid