Increased self-consumption and substitute power supply in case of grid failure
The benefit of the system is firstly an increase in self-consumption of PV electric current, which increases independence from the electric utility company.
The Renewable Energy Sources Act (EEG) has helped to ensure that the costs for self-consumed electric current are fixed for the next 20 years. For this current, there will be no price increases during this period.
An additional advantage is the possibility of using the system in the event of a power outage. The Sunny Backup generates a stand-alone grid and thus continues to supply the connected loads with electric current.