Disclosed is an energy generating installation, especially a wind power station, including a drive shaft, a generator (8) and a differential transmission (11 to 13) provided with three drives or outputs. A first drive is connected to the drive shaft, one output is connected to a generator (8), and a second drive is connected (23) to a differential drive (6). A ring gear carrier (18) is connected to a generator shaft (24). The generator shaft (24) is mounted (25) via the ring gear carrier (18) on a housing (26) of the generator (8).