The results will inform Top Energy’s full investigation and material provided to the Commerce Commission, he said.
“We understand these outages may have shaken the confidence of some in the community about the reliability of the electricity network, and we are very sorry about that.
“But I want to provide assurance that the network is reliable, and we have invested significantly in recent years.”
Four power outages from October 31 to November 8 cut power to thousands of households and businesses across a large chunk of the Far North, including Kaikohe, Kerikeri, Whangaroa, the Bay of Islands, and parts of southern Hokianga.
However, it was the scale of the November 6 outage that triggered a breach of the Commerce Commission’s reliability threshold.
The commission has confirmed an in-house engineer will investigate to provide information for the review.
When complete, “compliance action” will be determined, which could include anything from no action, to a warning letter, or court action with a fine of up to $5m.
Shaw said the company was also checking similar substations on the network.
“To add extra resilience, the intention is to put connection points for diesel generators at each of our zone substations over the next 12 to 18 months.
“If a similar major event occurred, these connections would allow us to deploy temporary diesel generation across the network in days, not weeks.”
Jenny Ling is a senior journalist at the Northern Advocate. She has a special interest in covering human interest stories, along with finance, roading, and social issues.