Hydro Stirling engine comprising: at least two hydro Stirling units (10, 20), which in each case comprise a container (11, 21) configured as a standing cylinder, wherein for each container (11, 21) a heating device for heating an upper region or an upper end region is provided, and wherein an axially movable and controllable displacement piston unit with a displacement piston (13, 23) comprising a regenerator (13b, 23b) is arranged in the interior of each container (11, 21), an energy converter unit, and a common working fluid circuit, which has, for each hydro Stirling unit, at least one working fluid line (50, 60), which connects the hydro Stirling unit to the energy converter unit, characterised in that the energy converter unit is a turbine unit, which has a turbine vessel and a turbine wheel arranged in this turbine vessel, that the working fluid lines (50, 60) extend between the hydro Stirling units (10, 20) and the turbine unit in such a way that working fluid, which flows from a hydro Stirling unit (10, 20) to the turbine unit, firstly impinges on the turbine wheel and then falls into a region of the turbine vessel below the turbine wheel, that the working fluid circuit comprises for each hydro Stirling unit (10, 20) at least one working fluid return line (70, 74), which connects the turbine unit to the hydro Stirling unit (10, 20), and that each displacement piston unit comprises a cylinder shell (14, 24) extending downwardly from the displacement piston (13, 23), wherein the outer surface of the cylinder shell is substantially aligned with the outer surface of the displacement piston (13, 23). at least two hydro Stirling units (10, 20), which in each case comprise a container (11, 21) configured as a standing cylinder, wherein for each container (11, 21) a heating device for heating an upper region or an upper end region is provided, and wherein an axially movable and controllable displacement piston unit with a displacement piston (13, 23) comprising a regenerator (13b, 23b) is arranged in the interior of each container (11, 21), an energy converter unit, and a common working fluid circuit, which has, for each hydro Stirling unit, at least one working fluid line (50, 60), which connects the hydro Stirling unit to the energy converter unit, characterised in that the energy converter unit is a turbine unit, which has a turbine vessel and a turbine wheel arranged in this turbine vessel, that the working fluid lines (50, 60) extend between the hydro Stirling units (10, 20) and the turbine unit in such a way that working fluid, which flows from a hydro Stirling unit (10, 20) to the turbine unit, firstly impinges on the turbine wheel and then falls into a region of the turbine vessel below the turbine wheel, that the working fluid circuit comprises for each hydro Stirling unit (10, 20) at least one working fluid return line (70, 74), which connects the turbine unit to the hydro Stirling unit (10, 20), and that each displacement piston unit comprises a cylinder shell (14, 24) extending downwardly from the displacement piston (13, 23), wherein the outer surface of the cylinder shell is substantially aligned with the outer surface of the displacement piston (13, 23).