Rankine cycle plant for the regasification of liquefied gas, comprising: a Rankine closed loop system comprising at least: one evaporator ; an expansion turbine (6; 6', 6") provided with an inflow opening (10; 10', 10"), an outflow opening (11; 11', 11") and at least one auxiliary outlet (12, 13, 14; 12', 13', 14"); a generator operatively connected to the expansion turbine (6; 6', 6"); a condenser ; a pump ; conduits configured to connect the evaporator , the expansion turbine (6; 6', 6"), the condenser and the pump according to a closed cycle in which a working fluid (WF) circulates; a source of liquefied gas (LG) at a cryogenic temperature, wherein the source of liquefied gas (LG) is operatively coupled to the condenser to receive heat from the working fluid (WF) flowing out from the expansion turbine (6; 6', 6") so as to take the liquefied gas (LG) to the gaseous state; a source of a heating fluid (HF) at a higher temperature than the cryogenic temperature, wherein the source of heating fluid (HF) is operatively coupled to the evaporator to transfer heat to the working fluid (WF) coming from the condenser ; characterised in that the expansion turbine (6; 6', 6") is a radial centrifugal, wherein said at least one auxiliary outlet (12, 13, 14; 12', 13', 14") is interposed between successive stages of said expansion turbine (6; 6', 6"); and in that the condenser is multilevel and comprises at least two condensing chambers , wherein a lower chamber of said at least two condensing chambers is connected to the outflow opening (11; 11") and an upper chamber of said at least two condensing chambers is connected to said at least one auxiliary outlet (12, 13, 14; 12', 13', 14"). a Rankine closed loop system comprising at least: one evaporator ; an expansion turbine (6; 6', 6") provided with an inflow opening (10; 10', 10"), an outflow opening (11; 11', 11") and at least one auxiliary outlet (12, 13, 14; 12', 13', 14"); a generator operatively connected to the expansion turbine (6; 6', 6"); a condenser ; a pump ; conduits configured to connect the evaporator , the expansion turbine (6; 6', 6"), the condenser and the pump according to a closed cycle in which a working fluid (WF) circulates; one evaporator ; an expansion turbine (6; 6', 6") provided with an inflow opening (10; 10', 10"), an outflow opening (11; 11', 11") and at least one auxiliary outlet (12, 13, 14; 12', 13', 14"); a generator operatively connected to the expansion turbine (6; 6', 6"); a condenser ; a pump ; conduits configured to connect the evaporator , the expansion turbine (6; 6', 6"), the condenser and the pump according to a closed cycle in which a working fluid (WF) circulates; a source of liquefied gas (LG) at a cryogenic temperature, wherein the source of liquefied gas (LG) is operatively coupled to the condenser to receive heat from the working fluid (WF) flowing out from the expansion turbine (6; 6', 6") so as to take the liquefied gas (LG) to the gaseous state; a source of a heating fluid (HF) at a higher temperature than the cryogenic temperature, wherein the source of heating fluid (HF) is operatively coupled to the evaporator to transfer heat to the working fluid (WF) coming from the condenser ; <EOS>