Energy management

The energy management system controls the distribution of energy between the DC side (PV generator) and the AC side (house grid and public grid). For this purpose, the energy management system checks for consumption in the local house grid. The logic of the energy management system then calculates and controls the optimal usage of PV energy. The generated PV energy is used for self-consumption as a priority. The remaining generated PV energy is fed into the public grid and remunerated.

The energy from PV generators is used for the following:

• Local consumers
• Charging the battery
• Feeding surplus energy into the public grid

Energy from a connected battery is used for the following:

• Local consumers
• Feeding into the public grid (only possible using external battery control system/battery manager)

Energy from the public grid is used for the following:

• Local consumers
• Charging the battery, e.g. to protect the battery in the winter or via the external battery control system/battery manager.

Energy from additional AC power sources is used for the following:

• Local consumers
• Charging the battery
• Feeding surplus energy into the public grid

INFO

AC power sources can be, for example, KOSTAL inverters, other inverters, combined heat and power (CHP) units, small wind turbines or other energy sources in the house grid.

To store this energy in a connected battery, the Storage of surplus AC energy from local generation function must be activated in the Webserver in Service menu > Battery settings.