The client came to us because he needed a solution that would help him aggregate 3 separate photovoltaic installations. One based on the Godwee inverter and two on the SofarSolar inverter. In addition, it needed an emergency power supply due to frequent power grid shutdowns. After installing the storage, all production, consumption and energy is sent to the grid in one application. The Victron energy storage balances energy in an optimal way so as to send as little as possible to the grid. In addition, the customer receives a guaranteed power supply with switching below 20ms - devices in the house will not turn off in the absence of a power grid.