A method of controlling the renewable energy absorbed by a hybrid power train for driving a load, wherein the hybrid power train comprises one or more equipment (21, 22, 23), comprising a gas turbine and an electric motor/generator, wherein the electric motor/generator is connected to a power generation plant and to a renewable energy source, wherein the method comprises the steps of: detecting the one or more input parameters ( P ij) of each equipment (21, 22, 23) to determine the initial condition of at least one of the equipment; applying a first conditional statement, wherein the first conditional statement determines a combined membership function ( M em + vfd), of at least one or more equipment (21, 22, 23), having two or more qualification states as output, so that if the combined membership functions ( M em+vfd) of the equipment has qualification state such that the checked equipment (21, 22) operate correctly, then the step of applying a second conditional statement is carried out to the renewable energy source, so as to determine the membership functions ( M pv) of the renewable energy source having two or more qualification states as output, so that if the membership functions ( M pv) of the renewable energy source has a qualification state such that the renewable energy source does not operate correctly, then the step of applying a third conditional statement to the power generation plant is carried out, so as to determine the membership functions ( M pg) of the power generation plant having in two or more qualification states as output, so that if the membership functions ( M pg) of the power generation plant has a qualification state such that power generation plant does not operate correctly, then change of load split between the gas turbine and the electric motor/generator; if the membership functions ( M pv) of the renewable energy source has a qualification state such that the renewable energy source operates in a correct way, then the power generated by the gas turbine and the energy absorbed by the renewable energy source is determined according to an objective function; else, if the combined membership functions ( M em+vfd) has qualification state such that the equipment (21, 22) checked does not operate correctly, then carrying out (53, 54) the load split between the gas turbine and the electric motor/generator. detecting the one or more input parameters ( P ij) of each equipment (21, 22, 23) to determine the initial condition of at least one of the equipment; applying a first conditional statement, wherein the first conditional statement determines a combined membership function ( M em + vfd), of at least one or more equipment (21, 22, 23), having two or more qualification states as output, so that if the combined membership functions ( M em+vfd) of the equipment has qualification state such that the checked equipment (21, 22) operate correctly, then the step of applying a second conditional statement is carried out to the renewable energy source, so as to determine the membership functions ( M pv) of the renewable energy source having two or more qualification states as output, so that if the membership functions ( M pv) of the renewable energy source has a qualification state such that the renewable energy source does not operate correctly, then the step of applying a third conditional statement to the power generation plant is carried out, so as to determine the membership functions ( M pg) of the power generation plant having in two or more qualification states as output, so that if the membership functions ( M pg) of the power generation plant has a qualification state such that power generation plant does not operate correctly, then change of load split between the gas turbine and the electric motor/generator; if the membership functions ( M pv) of the renewable energy source has a qualification state such that the renewable energy source operates in a correct way, then the power generated by the gas turbine and the energy absorbed by the renewable energy source is determined according to an objective function; else, if the combined membership functions ( M em+vfd) has qualification state such that the equipment (21, 22) checked does not operate correctly, then carrying out (53, 54) the load split between the gas turbine and the electric motor/generator. if the membership functions ( M pv) of the renewable energy source has a qualification state such that the renewable energy source does not operate correctly, then the step of applying a third conditional statement to the power generation plant is carried out, so as to determine the membership functions ( M pg) of the power generation plant having in two or more qualification states as output, so that if the membership functions ( M pg) of the power generation plant has a qualification state such that power generation plant does not operate correctly, then change of load split between the gas turbine and the electric motor/generator; if the membership functions ( M pv) of the renewable energy source has a qualification state such that the renewable energy source operates in a correct way, then the power generated by the gas turbine and the energy absorbed by the renewable energy source is determined according to an objective function; else, if the combined membership functions ( M em+vfd) has qualification state such that the equipment (21, 22) checked does not operate correctly, then carrying out (53, 54) the load split between the gas turbine and the electric motor/generator.