He expects there will be a rub-off effect on other energy companies like Trustpower or Contact Energy.
Mackenzie is also concerned at political uncertainty, questioning the impact if Labour indicates it will rescind the SOE sell-down at a future date in the same fashion it has said it will pull the plug on Telecom's ultra-fast broadband deal.
And he questions what slowing down the ETS means for a company like Vector which has to buy carbon credits. "This all creates uncertainty."
Add to this some fundamental rethinking of the impact of a series of recent natural disasters on the capacity of "lifeline" businesses to deliver energy, water and sewage to customers and it is clear the Vector boss has a challenging time ahead.
The major impact of the earthquakes is the way they have forced networks businesses to stand back and question how they can achieve resilient cost-efficient infrastructures that are able to respond to such events. It's not just the impact of earthquakes which have made it hard to access and repair underground networks but also the impact of hurricanes and tornadoes on overhead networks.
"The real issue is do we go overhead or do we go underground," says Mackenzie. "We've got a full review of that for us now."
"There's been a fundamental mental shift away from underground to overhead networks. From a cost perspective, overhead is about a quarter of the cost to fund. But some find overhead aesthetically challenging."
Another major issue in the energy space is where to locate critical data centres. He cites one organisation which did a lot of work on seismic strengthening its Christchurch data centre before the February 22 quake. "Had they not done that there would have been huge damage to multiple operations ... a centre of activity like a data centre can potentially take down a whole country."
Mackenzie was disappointed Vector did not get a slice of the Government's ultra-fast broadband rollout.
But analysts suggest the company has the ability to leverage the greater awareness among Auckland businesses, in particular of the benefits ultra-fast broadband can deliver them.
Mackenzie will not comment directly on Vector's own competitive response. But he says that before the initiative was floated his company had a fibre business competing against a vertically integrated monopoly. Customer demand was slow as there was not enough awareness around fibre and retailers were not pushing product to the market.
Now retailers will be able to compete against the structurally separated entity. "There is a lot of retail demand out there and a lot of retail solution providers. We look at 18 months of extensive research and detail built across Auckland. It might be attractive to a retailer that wants to access our networks and expand. It could be a pyrrhic victory for Vector."