On 11 February 2013 we approved Transpower's proposal to upgrade the Upper South Island grid to increase the transmission capacity of the 220 kV circuits connected to Islington Substation.
In August 2014 Transpower applied for an amendment to the project outputs and major capex allowance for stage 1 of the Upper South Island grid reliability upgrade. We approved Transpower’s application for an amendment in February 2015.
