Directly after the transformer station – on the low-voltage side, behind the energy meter and before the main low-voltage distribution (NSHV). It must be ensured that the Renecost system is installed downstream of the main protective device. The upstream protective device must be rated according to the nominal current of the system. The rated short-circuit withstand capability of the network at the installation point must not exceed 17 kA; otherwise, the let-through current at the circuit breaker must be limited to 17 kA. This ensures that the permissible short-circuit withstand capability of the system is not exceeded.