Pulse Energy reported a net loss of $9.99 million, or 2.9 cents per share, in the six months ended September 30.

Geothermal has pipped gas generation for the first time as more plants come on stream.

Power companies' margins on retail electricity tariffs are unsustainably high, says a new report on listed NZ electricity stocks.

New Zealand Carbon Farming, the country's largest supplier of post-1989 bulk carbon credits, is suing Mighty River Power for $34.7 million.

New Zealand producer input prices fell in the third quarter as lower farmgate milk prices reduced input costs for dairy manufacturers.

The unusual maneuver requires a level of cash and savvy that few mega-dealmakers could ever offer.

Call me a Luddite, but I don't want a "smart" electricity meter installed at home, and certainly not without my knowledge or consent.

Google, Yahoo and Microsoft are part of a growing number of firms that are entering into power purchase agreements with wind farms.

A city-wide blackout left Dunedin streets in the dark for half an hour last night, as concerns are raised about the reliability of the city's street lighting.

I am the household manager - in part, because the other half isn't interested in assuming the role and in part because I like to know what's going on.

Power cuts are a part of life and Aucklanders should get used to it, says Vector chairman Michael Stiassny.

Vector says compensation from this month's power cuts - which affected 85,000 customers - won't be discussed until the cause of the fire that sparked them was known.

Power companies face a ban on so-called "save" calls, where they ring a customer departing for a rival and try to entice them back with a better offer.

Homeowners who install solar panels to cut their power bills are pushing up prices for everyone else, lines companies say.

An investigation into the substation fire which cut power to tens of thousands of Aucklanders will be jointly carried out by Transpower and Vector.

About 200 customers remain without power after extreme weather damaged power lines in the central and lower North Island yesterday.

When the lights go out over a large part of a city the size of Auckland, questions must be asked. How did this happen? Who allowed it to happen? Whose head must roll?

Vector and Transpower will audit vital equipment at power substations in a bid to identify other potentially vulnerable or problem areas within Auckland's beleaguered electricity network.

More than 1000 properties remain without power after fierce winds lashed the lower North Island and brought down electricity lines yesterday.

Energy Minister Simon Bridges says he is confident that lines company Vector acted appropriately in the wake of the power cuts in Auckland.

Vector has warned recently restored power users to expect to be 'dropped' from the system during peak times today, as a former chairman criticises the company.

Parnell hotels were full up with families and people suffering with health issues, said hotel staff in the area.

Auckland suburbs that have been without power for more than a day and a half face a further delay until the lights come back on.

Power should be restored to all Auckland suburbs by 5am tomorrow, lines company Vector said.

The NZ Transport Agency said was currently heavy on the Northern Motorway into the city, due to the flow on effects from yesterday's powercut.