High-Voltage Direct Current (HVDC)

High-Voltage Direct Current (HVDC) is a technology used to transmit electricity over long distances using direct current (DC) rather than the alternating current (AC) used in most power grids. HVDC systems convert AC electricity generated by power plants into DC for transmission and then convert it back to AC near the point of consumption.

HVDC offers lower transmission losses than conventional AC lines over long distances, making it particularly suitable for connecting remote renewable energy projects, offshore wind farms, and regional power grids. It also allows greater control of electricity flows and can connect grids operating at different frequencies.

HVDC infrastructure typically includes converter stations at each end of the transmission line and can be deployed through overhead lines, underground cables, or subsea cables. As countries expand renewable energy capacity and modernize their power systems, HVDC is increasingly viewed as a critical technology for enabling large-scale clean energy integration and strengthening grid reliability.