An electric generator for a wind turbine is provided, including a stator and a rotor having two axial ends opposed to each other, wherein a liquid cooling arrangement for cooling the stator by guiding a cooling liquid through the stator is provided, wherein at least two side ports which are arranged at the two opposite axial ends of the stator and at least one central port which is arranged at an axial center of the stator are provided, wherein the liquid cooling arrangement includes at least one fluid channel for leading the cooling liquid bidirectionally through the stator such that the cooling liquid either enters the stator through the side ports and leaves the stator through the central port or enters the stator through the central port and leaves the stator through the side ports.