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Home / New Zealand

Grant Bradley: Time to cut to core of power woes

Grant Bradley
By Grant Bradley
Deputy Editor - Business·NZ Herald·
5 Oct, 2014 06:50 PM2 mins to read

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Tens of thousands of Aucklanders could remain without power for up to two days after two fires damaged Transpower's Penrose substation early today.
Grant Bradley
Opinion by Grant Bradley
Grant Bradley is the Business Herald’s Deputy Editor, Aviation and Tourism Writer.
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Here we go again. Another power emergency in Auckland, a city that's building a reputation for them.

Sixteen years ago, the lights went out in the central city for up to five weeks because of overheating cables. Then in 2006 and 2009, nearly a million Aucklanders were without power when two corroded shackles worth a few dollars each failed and a forklift driver lifted a shipping container into high-voltage lines.

There have also been the regular, more-isolated cuts due to storms.

Power outage: Penrose substation blaze

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But the latest one, cause unknown and blame unattached at this stage, is troubling because the vulnerability of parts of the system is no secret. Back in 2011, the risk of fire at substations such as Penrose was identified as possibly leading to a "high-impact failure".

Part of that substation, where yesterday's fire broke out, is having $20 million spent on upgrading it. If that part of the system had been identified as a weak point, why has the work not been done sooner?

Taxpayer and consumers' money has funded the nearly $2 billion spent on fortifying national grid operator Transpower's network through Auckland over the past seven years, and lines company Vector spends hundreds of millions of dollars more on its system. Take a look at the fixed component - Transpower and Vector's share - of ever increasing power bills and you get the picture.

The highly paid heads of these monopoly businesses are making the right noises about the priority being to get power back on before starting any blame game.

But once the electricity's back on, the public need to know where responsibility lies.

Transpower and Vector say (appropriately) they can't guarantee the power will stay on all the time. They'd have to duplicate every asset to get close to that and there's no appetite for a such a multi-billion-dollar spend-up. They say it's getting power back on quickly after a big cut that really counts.

In Auckland, they're getting plenty of practice at that.

Discover more

New Zealand

Mobile phone customers affected by blackout

05 Oct 01:42 AM
New Zealand

Auckland power cut a 'freak' occurence - Key

05 Oct 03:50 AM
New Zealand

Power outage: Commuters warned of delays

05 Oct 03:37 AM
New Zealand

Power outage: Zero tolerance for looting - police

05 Oct 04:49 AM

Grant Bradley is Business Herald energy reporter.

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