KEY POINTS:
The Powersavers campaign could be over in a week, says an electricity lobby group.
Major Electricity Users Group director Ralph Matthes said there was some more rain for the hydro lakes after the weekend's wet weather and the diesel-fired emergency plant at Whirinaki has hardly been used in the last week.
He said the cold snaps have acclimatised people to the winter weather which will hopefully minimise peaks for future cold snaps.
"I think we need to get on with the post-mortem as to what went right and what went wrong with this particular event," Mr Matthes said.
He said incentives to save power should have been offered to households.
But despite that, the five regions of New Zealand saved between 3.6 per cent and 5.1 per cent over seven days to July 10 midnight.
He said the campaign did work but some large users also had to turn down their use.
The Powersavers campaign is run by the five large electricity suppliers Contact, Genesis, Mercury Energy, Meridian, Trustpower and Transpower.
Transpower chief executive and Powersavers spokesman Patrick Strange said the saving initiative is planned to continue for another two weeks.
"We'll be looking at it over the next day or two. The South Island lake situation has improved but we're still below what is called the min-zone. We're still being cautious," Mr Strange said.
He said the response to power saving initiatives by households had been "excellent".
