The device for generating electricity (1) comprises: a first heat pump (3) provided with a first closed circuit (15) in which a first heat-transfer fluid circulates, and with a first heat exchanger (17) between the first heat-transfer fluid and a flow of atmospheric air in which the flow of atmospheric air transfers a quantity of heat to the first heat-transfer fluid, at least a second heat pump (5), provided with a second closed circuit (23) in which a second heat-transfer fluid circulates, and with a second heat exchanger (25) between the second heat-transfer fluid and a third heat-transfer fluid in which the second heat-transfer fluid transfers a quantity of heat to the third heat-transfer fluid; means for transferring a quantity of heat from the first heat-transfer fluid to the second heat-transfer fluid; a third closed circuit (9), in which the third heat-transfer fluid circulates; a turbine (11) inserted on the third closed circuit (9) and driven by the third heat-transfer fluid; an electric generator (13), mechanically driven by the turbine (11).