Method for feeding electrical power from a wind energy installation (2, 3) by means of an energy transmission path (8, 9) to an AC voltage supply system at a point of common coupling of the energy transmission path (8, 9) and the AC voltage supply system, in which method · the voltage (Uk) is detected at the point of coupling and supplied to a tapping selection controller (16, 17), · the voltage (Us) is detected at the output of the wind energy installation (2, 3) and supplied to the tapping selection controller (16, 17), and · depending on the level of the detected voltages (Uk, Us), taps are occupied by the tapping selection controller (16, 17), in the case of a feed transformer (14, 15) which is arranged in the energy transmission path (8, 9) and is provided with taps, in such a way that a voltage (Us) which leads to a prespecified voltage (Uk) at the point of common coupling occurs at the output of the wind energy installation (2, 3), wherein · the voltage (Uk) which is detected at the point of coupling is checked in respect of which of a plurality of prespecified voltage ranges (Ukmin1 - Ukmax1, Ukmin2 - Ukmax2, Ukmin3 - Ukmax3) it lies in, and · in accordance with the result of this check, the tapping selection controller (14, 15) is acted on by means of one range selector (34, 38, 41) from amongst a plurality of range selectors (34, 38, 41), which are associated with each voltage range (Ukmin1 - Ukmax1, Ukmin2 - Ukmax2, Ukmin3 - Ukmax3) of the voltage at the point of coupling, for the output voltage (Us) at the wind energy installation (2, 3) such that the voltage (Uk) at the output of the wind energy installation (2, 3) lies in the voltage range (Ukmin1 - Ukmax1, Ukmin2 - Ukmax2, Ukmin3 - Ukmax3) of the respective range selector (34, 38, 41). · the voltage (Uk) is detected at the point of coupling and supplied to a tapping selection controller (16, 17), · the voltage (Us) is detected at the output of the wind energy installation (2, 3) and supplied to the tapping selection controller (16, 17), and · depending on the level of the detected voltages (Uk, Us), taps are occupied by the tapping selection controller (16, 17), in the case of a feed transformer (14, 15) which is arranged in the energy transmission path (8, 9) and is provided with taps, in such a way that a voltage (Us) which leads to a prespecified voltage (Uk) at the point of common coupling occurs at the output of the wind energy installation (2, 3), · the voltage (Uk) which is detected at the point of coupling is checked in respect of which of a plurality of prespecified voltage ranges (Ukmin1 - Ukmax1, Ukmin2 - Ukmax2, Ukmin3 - Ukmax3) it lies in, and · in accordance with the result of this check, the tapping selection controller (14, 15) is acted on by means of one range selector (34, 38, 41) from amongst a plurality of range selectors (34, 38, 41), which are associated with each voltage range (Ukmin1 - Ukmax1, Ukmin2 - Ukmax2, Ukmin3 - Ukmax3) of the voltage at the point of coupling, for the output voltage (Us) at the wind energy installation (2, 3) such that the voltage (Uk) at the output of the wind energy installation (2, 3) lies in the voltage range (Ukmin1 - Ukmax1, Ukmin2 - Ukmax2, Ukmin3 - Ukmax3) of the respective range selector (34, 38, 41).