Back in the early days of electricity supply, AC (alternating current) was adopted for power transmission because it could be stepped up or down as needed by transformers and because it could be interrupted more easily than DC (direct current). High-voltage AC grids evolved as an efficient way to connect existing islands of distribution grids and large generation units with industrial and residential loads. It was not until some decades later that the technology for high voltage DC (HVDC) power advanced sufficiently for the first commercial HVDC link to be established. This paper reviews current & future of HVDC transmission systems in India. The article discusses the recent developments in HVDC Transmission & other technologies in India & World also. This paper compares the HVDC transmissions design, operation, construction and maintenance over HVAC. The article additionally shows an economic analysis of HVDC transmission innovation over an AC framework in India. This paper gives a review of references formations of HVDC transmission frameworks in India. The paper conclusions why picking HVDC frameworks in the present power framework development.