NOVELTY - The method for disposing glass-fiber-reinforced components such as rotor blades of wind turbines with a main body made of fiber-reinforced plastics, comprises supplying the rotor blades to a clinker production process as an alternative fuel. The rotor blade is chopped on a fraction size of less than 50 mm and is mixed and homogenized after partial separation of iron and non-ferrous metals with an alternative fuel with a water content of greater than 20 wt.%. A clinker production process is abandoned as alternative fuel. The weight ratio of used rotor blade to alternative fuel is 1:2.    USE - Method useful for disposing glass-fiber-reinforced components such as rotor blades of wind turbines.    ADVANTAGE - The method ensures simple disposing of glass-fiber-reinforced components in environmentally friendly manner.    DETAILED DESCRIPTION - The method for disposing glass-fiber-reinforced components such as rotor blades of wind turbines with a main body made of fiber-reinforced plastics, comprises supplying the rotor blades to a clinker production process as an alternative fuel. The rotor blade is chopped on a fraction size of less than 50 mm and is mixed and homogenized after partial separation of iron and non-ferrous metals with an alternative fuel with a water content of greater than 20 wt.%. A clinker production process is abandoned as alternative fuel. The weight ratio of used rotor blade to alternative fuel is 1:2. The glass-fiber-reinforced component and/or the rotor blade is used as calcinator of cement process. The quantity of the used glass-fiber-reinforced component and/or the rotor blade fractions is determined and the utilization of inorganic correction materials such as sand and chalk is reduced in raw flour corresponding to the utilized quantity of the glass fiber reinforced component. The separation of iron and non-ferrous metals is carried out with eddy current magnet, where the metal is separated from lightning protection system and the hub of the rotor blade. The alternative fuel is derivated fuels and/or paper sludge from the paper industry and/or other production waste.