A modular prosthesis cooling system may comprise a port disposed in the wall of a prosthesis socket, and a plug module removable disposed in the port. The plug module may comprise cooling element, such as a TEC, and a heat-dissipation element, such as a heat sink or fan. A protective heat-dissipating shroud may be disposed about plug module. The prosthesis socket wall may comprise a heat-conductive layer in a heat-exchange relationship with the cooling element.