The Electricity Authority's report in to a toppled pylon has found the collapse was entirely avoidable.
The Transpower pylon north of Helensville fell - cutting power to 88,000 people in Northland - after unsupervised, inexperienced maintenance crews undid three legs at once.
The report found there was evidence removing all the nuts wasn't a one-off event.
ZB senior political correspondent Barry Soper says this incident came with significant economic impacts to Northland.
LISTEN ABOVE

Erica Stanford: Education Minister explains why Government not looking to ban VPNs
04:40

Barry Soper: Newstalk ZB senior political correspondent on the Government opening new diesel storage at Marsden Point
05:39

Murray Olds: Australian correspondent on Australia's reaction to China's ballistic missile test
04:52