an electrical conductor extending longitudinally, the electrical conductor comprising an electrically conductive core surrounded by an insulating material,

a plurality of longitudinally extending cooling pipes, each cooling pipe comprising a thermally conductive wall defining an interior channel for circulating, between a coolant inlet and a coolant outlet of the cooling pipes, a coolant medium, and

a thermal interface material (TIM) surrounding the cooling pipes and the electrical conductor, wherein the TIM is configured to thermally couple an external surface of the thermally conductive wall of each cooling pipe with an external surface of the insulating material of the electrical conductor such that heat generated at the electrical conductor is transferred, via the external surface of the cooling pipes over a heat transfer region, to the coolant medium circulating in the interior channel, wherein the plurality of cooling pipes is arranged about the electrical conductor such that a portion of an external surface of the thermally conductive wall of each cooling pipe is in direct contact with a corresponding portion of the insulating material of the electrical conductor and wherein the insulating layer is arranged to apply a compressive force on the power cable core, thereby causing the thermally conductive wall of each cooling pipe to elastically deform.