HVDC transmission is a transformative technology that provides efficient long-distance power transmission, reduces grid instability, and integrates renewable energy sources more effectively than traditional AC systems. While HVDC has significant advantages, such as lower power losses and better grid control, it also has high infrastructure costs and complex maintenance requirements. The idea of transmitting electricity across oceans, such as from the U.S. to Europe, is theoretically possible but presents enormous technical, economic, and logistical challenges. As energy demands grow and intercontinental energy cooperation increases, HVDC could play a pivotal role in shaping the future of global electricity transmission. However, for now, large-scale oceanic HVDC transmission remains an ambitious but distant possibility.