Increased renewable energy integration and international power trades have led to the construction and development of new HVDC transmission systems. HVDC cables

in particular

play an important role in undersea power transmission and offshore renewable energy integration having lower losses and higher reliability. In this paper

the current commercial feasibility of HVDC cables and the development of different types of HVDC cables and accessories are reviewed. The non-uniform electric field distribution caused by the applied voltage

temperature dependent conductivity

and space charge accumulation is briefly discussed. Current research in HVDC cable for higher operation voltage level and larger power capacity is also reviewed with specific focus on the methodologies of space charge suppression for XLPE extruded cables.