The Energy Minister has been quick to criticise Transpower's conduct that led to the collapse of a Northland power pylon.

A new report by the Electricity Authority revealed one of the company's senior engineers had warned crews doing foundation work had knowledge gaps before the pylon toppled in June.

Minister Simeon Brown says this failure was 'unacceptable' and 'avoidable'.

"Ultimately, Transpower didn't do anything in relation to addressing those concerns in 2021 - and that has led to what happened in Northland in June this year."

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