A method to operate a thermodynamic cycle involving a working gas/fluid whereby said working gas/fluid passes from a hot to a cold side of the cycle through a system comprising an expansion machine and an electricity generator so as to generate electricity, and wherein said working gas/fluid composition is selected from anyone of CO 2 , solvent, amine, water and wherein said method comprises the steps: a) using heat selected from a heat source from the group consisting of geothermal heat, solar heat, industrial waste heat and heat from combustion processes, to raise the temperature on the hot side of the cycle, wherein the heat source used has a temperature within the range of 60-120 °C and wherein the temperature on the hot side is in the range of 60-120 °C, b) passing said working gas/fluid from the hot to the cold side of the cycle through an expansion machine operating the expansion machine at pressures below 10 bar maximum pressure, wherein a single stage radial turbine is employed as expansion machine and wherein said turbine comprises stationary working gas/fluid inlet channels, an upstream high-pressure side, a downstream low-pressure side and rotating turbine blades arranged on an axle defining a Z direction and wherein said turbine is operated at a dimensionless speed in the range of 0.55-0.85, and an optimum loading factor of 0.7, c) adapting the ratio of pressures on the hot side and the cold side of the cycle, i.e. upstream and downstream of said expansion machine, to be in the range of 6-9, and d) maintaining a pressure on the cold side of the process to be a maximum pressure below 0,8 bar, characterised in that the method further comprises: e) partly or wholly removing condensing liquid in the single stage radial turbine away from the turbine through slits or openings positioned in the system downstream of the inlet channels, but upstream of the rotating turbine blades , and/or slits or openings positioned upstream of the inlet channels of the turbine. a) using heat selected from a heat source from the group consisting of geothermal heat, solar heat, industrial waste heat and heat from combustion processes, to raise the temperature on the hot side of the cycle, wherein the heat source used has a temperature within the range of 60-120 °C and wherein the temperature on the hot side is in the range of 60-120 °C, b) passing said working gas/fluid from the hot to the cold side of the cycle through an expansion machine operating the expansion machine at pressures below 10 bar maximum pressure, wherein a single stage radial turbine is employed as expansion machine and wherein said turbine comprises stationary working gas/fluid inlet channels, an upstream high-pressure side, a downstream low-pressure side and rotating turbine blades arranged on an axle defining a Z direction and wherein said turbine is operated at a dimensionless speed in the range of 0.55-0.85, and an optimum loading factor of 0.7, c) adapting the ratio of pressures on the hot side and the cold side of the cycle, i.e. upstream and downstream of said expansion machine, to be in the range of 6-9, and d) maintaining a pressure on the cold side of the process to be a maximum pressure below 0,8 bar, <EOS>