Wind power plant having a sliding bearing, wherein - the sliding bearing is a radial bearing, - the wind power plant has a rotor and a gondola, and the sliding bearing is a main bearing for rotatably bearing the rotor relative to the gondola, - the sliding bearing comprises a first bearing component and a second bearing component, - the first bearing component and the second bearing component are arranged such that they can rotate relative to one another about a common rotational axis, - the sliding bearing has a rotational direction which is defined by the first bearing component and the second bearing component which can rotate relative to one another, - the sliding bearing has at least one sliding lining which is arranged between the first bearing component and the second bearing component, - the sliding lining has a contact face which is provided for contact with a lubricant, - the contact face has a sliding lining duct opening to a sliding lining duct, wherein the sliding lining duct crosses the sliding lining and is provided for feeding lubricant into a region between the first bearing component and the second bearing component, - the contact face has a contact face region at the front in the rotational direction and a contact face region at the rear in the rotational direction, - the sliding lining has a groove on the contact face, and the groove surrounds the sliding lining duct opening, and - the groove is located in the front contact face region, - the groove has a groove wall at the front in the rotational direction and a groove wall at the rear in the rotational direction, - the front groove wall has a front groove wall inclination angle between the front groove wall and the contact face, - the rear groove wall has a rear groove wall inclination angle between the rear groove wall and the contact face, and - the front groove wall inclination angle is smaller than the rear groove wall inclination angle. - the sliding bearing is a radial bearing, - the wind power plant has a rotor and a gondola, and the sliding bearing is a main bearing for rotatably bearing the rotor relative to the gondola, - the sliding bearing comprises a first bearing component and a second bearing component, - the first bearing component and the second bearing component are arranged such that they can rotate relative to one another about a common rotational axis, - the sliding bearing has a rotational direction which is defined by the first bearing component and the second bearing component which can rotate relative to one another, - the sliding bearing has at least one sliding lining which is arranged between the first bearing component and the second bearing component, - the sliding lining has a contact face which is provided for contact with a lubricant, - the contact face has a sliding lining duct opening to a sliding lining duct, wherein the sliding lining duct crosses the sliding lining and is provided for feeding lubricant into a region between the first bearing component and the second bearing component, - the contact face has a contact face region at the front in the rotational direction and a contact face region at the rear in the rotational direction, - the sliding lining has a groove on the contact face, and the groove surrounds the sliding lining duct opening, and - the groove is located in the front contact face region, - the groove has a groove wall at the front in the rotational direction and a groove wall at the rear in the rotational direction, - the front groove wall has a front groove wall inclination angle between the front groove wall and the contact face, - the rear groove wall has a rear groove wall inclination angle between the rear groove wall and the contact face, and - the front groove wall inclination angle is smaller than the rear groove wall inclination angle.