Genesis Energy announced its last two coal-burning electricity generators at Huntly Power Station will be shut down.

Origin Energy will book a A$270m impairment from selling out of Contact Energy.

Contact Energy will have more New Zealand shareholders on its register after Australia's Origin Energy sold its controlling stake for $1.8 billion.

Australia's Origin Energy has sold is Contact Energy shares to underwriters Macquarie Capital for $1.8 billion, ending months of speculation.

Mr Key said Solid Energy had $300 million of outstanding debt and was in a "precarious position".

A revised contract between Meridian Energy and the owners of the Tiwai Pt aluminium smelter extends the smelter's operating life for at least another year from 2017.

More than 100 solar power and state of the art battery systems are being offered free by Vector to individuals, families, community groups and schools in the Auckland region.

Labour leader Andrew Little said it was "good news" for the 800 workers at the plant, and the Green Party described it as a "relief".

Meridian Energy has joined with charity KidsCan to raise awareness of child poverty in NZ and help to provide food, clothing and basic healthcare.

One in five Auckland households switched power companies last year, helping them save an average of $136 in the process.

Speculation is building that a block sale of ASX-listed Origin Energy's 53pc stake in New Zealand's Contact Energy may be imminent.

Australia's largest integrated off-the-grid solar power system will be up and running in 2016 at a copper mine in remote Western Australia.

The New Zealand Middle East Business Council says they are monitoring "the potential of opening up of trade with Iran".

While the world is distracted by the Greek saga and China something really important is going on: Iran and oil.

BP New Zealand generated its smallest earnings in more than a decade due to falling oil prices.

New Zealand shares fell over uncertainty surrounding the future of the Tiwai Point smelter.

For Tina Porou, leadership is a daily balancing act.

Rising power bills are driving down satisfaction with big energy retailers, a Consumer New Zealand survey has found.

Blenheim-based power company Marlborough Lines has bought an 80pc stake in Yealands Wine Group for $89 million.

A decision on the future of Tiwai Point's massive electricity contract, due today - has been delayed by a month.

Genesis Energy, the country's biggest energy retailer, will permanently retire a coal/gas-fired unit at the Huntly Power Station.

More than half a billion dollars has been wiped off the value of NZX-listed electricity firms today.

Next Wednesday all eyes will be on the owners of the Tiwai Pt aluminium smelter to see if they give Meridian Energy notice they wish to terminate their contract.

Contact Energy's 70,000 shareholders will get a 50c-a-share special dividend tomorrow as its majority owner examines options to quit its stake in the company.

Electricity retailer and generator Trustpower has lost the latest round of a $8.9m tax battle.

Auckland households could face an increase of 4.5 per cent in their power bills under changes the Electricity Authority is considering.

The Electricity Authority has published a series of proposals on more efficient ways to charge for the national grid.

New Zealand shares fell yesterday, as Contact Energy and Mighty River Power were sold by investors looking to crystallise recent gains.

Mining giant Rio Tinto has pulled its support for any expansion of Kakadu's Ranger uranium mine after its operator put the project on ice.