Genesis Energy will apologise to customers after an embarrassing glitch saw thousands get a wild under-estimate of their power use.
The Price Plan Check was emailed on Tuesday, in an effort to ensure people were on the right electricity use programme.
However, a computer problem meant 13,800 customers were told their power use was 840 kilowatt hours of electricity over the past year – about a tenth of an average home's consumption.
Genesis Energy spokesman Richard Gordon said the computer-generated email had failed to pick up different power-use figures. "We're still trying to work out how it happened."
The figure of 840kWh was "completely wrong", he said.
An average home uses around 8400kWh a year.
The email was stopped as soon as the problem was spotted. However, it still went out to almost 14,000 of its 650,000 customers.
Genesis would send out a revised email as soon as the problem was resolved, Mr Gordon said.
There was no way the email would have been mistaken for a bill. However, the company would apologise for the error, and for any confusion caused.
- The Dominion Post
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