Transpower is to spend $5.5 million upgrading its Redclyffe, Whirinaki and Wairakei substations from September.
Together, the substations supply power to Hawke’s Bay and Gisborne but the transmission lines into both of those regions are vulnerable to extreme weather events. Four events have cut supply to both regions between 2012 and 2016.
The transmission line work will involve installing interphase spacers on one of the two circuits. The spacers are connected between the top, middle and lower conductors in locations identified as being at risk from line clash during high winds or snow.
Source: Energy News/transpower.co.nz