Construction will commence immediately and is scheduled for completion in early 2026.
Recent severe weather across Aotearoa has left multiple regions without power.
It took four days to confirm the truth.
Transpower had been re-routing power through its 110 kV network, but demand ramping back up on Monday was expected to put pressure on this supply.
They had been unable to complete the transfer of all the conductor wire to the tower before dark.
Transpower said it aimed to have the temporary pylon running by Saturday afternoon, but the process was "complex and challenging".
The new contract will also prop up the national power supply when the hydro lakes run low.
A new report says farmers could save on energy costs and keep power prices down for Kiwis.
The solar storm activity could interfere with New Zealand's electricity supply.