A direct current power cable, comprising a conductor which is surrounded at least by an inner semiconductive layer which comprises a first semiconductive composition, an insulation layer and an outer semiconductive layer which comprises a second semiconductive composition, in that order, wherein at least the insulation layer consists of a non-crosslinked polymer composition comprising: either (a) a polyolefin selected from the group consisting of a low pressure polyethylene or a heterophasic copolymer of propylene with one or more comonomer(s) wherein said heterophasic copolymer of propylene comprises a matrix phase of propylene homo or copolymer and 10 to 40 wt% elastomeric propylene copolymer phase based on the amount of heterophasic copolymer of propylene; and (b) a second polyolefin selected from the group consisting of a low density polyethylene (LDPE), low pressure polyethylene or low pressure polypropylene, which is different from the polyolefin (a) wherein the amount of the polyolefin (a) in the polymer composition is at least 90 wt% based on the combined weight of the polyolefin (a) and the second polyolefin (b); as the only polymer components; or (a) a polyolefin selected from the group consisting of a low pressure polyethylene or a heterophasic copolymer of propylene with one or more comonomer(s) wherein said heterophasic copolymer of propylene comprises a matrix phase of propylene homo or copolymer and 10 to 40 wt% elastomeric propylene copolymer phase based on the amount of heterophasic copolymer of propylene as the only polymer component; wherein the low pressure polyethylene is independently selected from very low density polyethylene (VLDPE) copolymers, linear low density polyethylene (LLDPE) copolymers, medium density polyethylene (MDPE) copolymers or high density polyethylene (HDPE) homopolymers or copolymers. (a) a polyolefin selected from the group consisting of a low pressure polyethylene or a heterophasic copolymer of propylene with one or more comonomer(s) wherein said heterophasic copolymer of propylene comprises a matrix phase of propylene homo or copolymer and 10 to 40 wt% elastomeric propylene copolymer phase based on the amount of heterophasic copolymer of propylene; and (b) a second polyolefin selected from the group consisting of a low density polyethylene (LDPE), low pressure polyethylene or low pressure polypropylene, which is different from the polyolefin (a) wherein the amount of the polyolefin (a) in the polymer composition is at least 90 wt% based on the combined weight of the polyolefin (a) and the second polyolefin (b); as the only polymer components; or (a) a polyolefin selected from the group consisting of a low pressure polyethylene or a heterophasic copolymer of propylene with one or more comonomer(s) wherein said heterophasic copolymer of propylene comprises a matrix phase of propylene homo or copolymer and 10 to 40 wt% elastomeric propylene copolymer phase based on the amount of heterophasic copolymer of propylene (a) a polyolefin selected from the group consisting of a low pressure polyethylene or a heterophasic copolymer of propylene with one or more comonomer(s) wherein said heterophasic copolymer of propylene comprises a matrix phase of propylene homo or copolymer and 10 to 40 wt% elastomeric propylene copolymer phase based on the amount of heterophasic copolymer of propylene as the only polymer component; wherein the low pressure polyethylene is independently selected from very low density polyethylene (VLDPE) copolymers, linear low density polyethylene (LLDPE) copolymers, medium density polyethylene (MDPE) copolymers or high density polyethylene (HDPE) homopolymers or copolymers.