System overview

In the case of systems where grid feed-in is not possible or desired, but you want to increase the proportion of self-generated energy in the consumed power, we advise installing a storage system in addition to the smart PV inverter. This reduces grid purchase costs to a minimum. To ensure that the system does not feed into the utility grid, an SMA Home Manager 2.0 or Energy Meter can be installed. It measures the power at the point of interconnection, limits the PV inverter as soon as the battery-storage system is fully charged, and prevents the electric current from flowing into the utility grid.

Here, it is important that the PV inverter can regulate the generated power so that only so much energy is generated as is currently consumed and stored. The storage system, consisting of a battery inverter and battery, supplements the power generators. Alternatively, the system can be designed with a hybrid inverter to which further PV inverters may be added. The storage system lets you shift the time of consumption so that your own solar power can be used at night, for example. For instance, the generated energy can be used to charge an electric vehicle. In addition, installing a battery-backup system can provide security if the utility power grid fails.

Design of the PV system: solution 2 with PV and battery inverters.

Information: The SMA eCharger can currently only be controlled by the Sunny Home Manager 2.0.

Design of the PV system: solution 2 with hybrid inverter and optional PV inverters

Information: In PV systems equipped with the Sunny Home Manager 2.0, the use of two battery or hybrid inverters is not supported.

The SMA inverters listed below meet the requirements of Solution 2 and do not need to be replaced: