Implementation of ± 500 kV bipolar HVDC VSC interconnection in Italy July 29, 2022 | Europe Tenders Competitive bids are invited for implementation of the ± 500 kV bipolar high voltage direct current (HVDC) voltage source convertor (VSC) interconnection with 2 x 500 MW marine electrodes. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password