Method for feeding electrical power, which is supplied by a photovoltaic generator, into an electrical power supply network, wherein an arrangement for supplying electrical power in the form of DC voltage is connected to an electrical supply network through an inverter, and wherein an MPP tracker, an intermediate circuit voltage regulator, a modulation regulator, an idle current pre-control device and a current regulator for influencing the inverter are provided, wherein the method is implemented using the following steps when an active power (P ac) fed into the power supply network is larger than a given value: the active power (P ac) fed into the alternating current network is delivered to the MPP tracker, and an intermediate circuit desired voltage (U dc,ref) is determined from the MPP tracker, wherein an idle power adjustment value (ΔQ) is determined from the modulation regulator and is changed additively, with a given idle power desired value (Q ref), to an idle power value (Q*), wherein the idle power adjustment value (ΔQ) is determined from the modulation regulator depending on an active and reactive inverter desired voltage (U d,ref, U q,ref) and from a measured intermediate circuit actual voltage (U dc); wherein the active inverter desired voltage (U d, ref) is determined from the intermediate circuit desired voltage (U dc, ref) and the reactive inverter desired voltage (U q, ref) is determined from the idle power value (Q*), and the inverter is influenced by the active and reactive inverter desired voltages (U d,ref, U q,ref); wherein an active inverter desired current (i d, ref) is determined from the intermediate circuit voltage regulator depending on the measured intermediate circuit actual voltage (u dc) and the intermediate circuit desired voltage (U dc, ref) determined from the MPP tracker, wherein a reactive inverter desired current (i q, ref) is determined from the idle current pre-control device depending on the idle power value (Q*) and a mains voltage amplitude (U netz); and wherein the active and reactive inverter desired voltage (U d,ref, U q,ref) is determined from the current regulator depending on the active inverter desired current (i d, ref), the reactive inverter desired current (i q,ref), an active inverter actual current (I d), a reactive inverter actual current (i q) and the mains voltage amplitude (U netz). the active power (P ac) fed into the alternating current network is delivered to the MPP tracker, and an intermediate circuit desired voltage (U dc,ref) is determined from the MPP tracker, wherein an idle power adjustment value (ΔQ) is determined from the modulation regulator and is changed additively, with a given idle power desired value (Q ref), to an idle power value (Q*), wherein the idle power adjustment value (ΔQ) is determined from the modulation regulator depending on an active and reactive inverter desired voltage (U d,ref, U q,ref) and from a measured intermediate circuit actual voltage (U dc); wherein the active inverter desired voltage (U d, ref) is determined from the intermediate circuit desired voltage (U dc, ref) and the reactive inverter desired voltage (U q, ref) is determined from the idle power value (Q*), and the inverter is influenced by the active and reactive inverter desired voltages (U d,ref, U q,ref); wherein an active inverter desired current (i d, ref) is determined from the intermediate circuit voltage regulator depending on the measured intermediate circuit actual voltage (u dc) and the intermediate circuit desired voltage (U dc, ref) determined from the MPP tracker, wherein a reactive inverter desired current (i q, ref) is determined from the idle current pre-control device depending on the idle power value (Q*) and a mains voltage amplitude (U netz); and wherein the active and reactive inverter desired voltage (U d,ref, U q,ref) is determined from the current regulator depending on the active inverter desired current (i d, ref), the reactive inverter desired current (i q,ref), an active inverter actual current (I d), a reactive inverter actual current (i q) and the mains voltage amplitude (U netz).