Transpower awards contract for HVDC inter-island link to Siemens October 30, 2009 | Asia-Pacific News Meanwhile, Transpower has awarded the NZD672 million principal contract for construction of Pole 3 of the high-voltage, direct-current (HVDC) inter-island link to Siemens. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password