Power cuts or failures happen every now and then, wherever you live. Obviously, the last thing you want is your power supply to be intermittent or shut off. Especially during winter, as the possibility of having to do without light and heating has the potential to cause serious problems. For owners of a photovoltaic system there is an additional problem. When there is no power in the daytime during sunny weather, the system will produce nothing. After all, the solar inverter needs power to function.
SMA has a solution for this, the Sunny Island backup system, which has the ability to supply temporary backup power.