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.

Aucklanders are being warned they could face fines of up to $10,000 and daily penalties for not keeping their trees and other vegetation away from power lines.

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.

A decade-long project to save endangered giant snails from a West Coast coal mine will finish next year.

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.

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.

Despite speculation about its future in NZ, Origin Energy says it's committed to its investment in Contact Energy.

Vector says a potential buyer has expressed interest in its gas transmission business.

The sale of Caltex is another example of the exodus of multi-national oil companies from the New Zealand market.

Z Energy shares have soared 21 per cent on news it has bought the Caltex chain of gas stations.

Powerco, the energy lines company, reported a 20 per cent drop in annual profit as it paid more tax.

Contact Energy shares jumped more than 14 per cent after announcing it will increase returns to shareholders.

Is the Govt really getting double the amount of dividends from its sold down power companies?

Producer input and output prices fell in the first quarter, reflecting lower fuel costs and weakness in prices of meat and dairy products.

As video streaming services surge in popularity, Kiwis are consuming far more internet data than ever before.

Vector chief executive Simon Mackenzie believes Tesla's new batteries will help transform the energy sector.

Foreign Minister Murray McCully has taken Shane Jones, David Shearer and Winston Peters with him for his trip to the Cook Islands, where he is holding talks.

The ramifications of a further 113 job losses at Stockton will reverberate right down the West Coast and all the way to the Port of Lyttelton, MP Damien O'Connor says.

Solid Energy did all it could to avoid job cuts on the West Coast but the coal market made it too difficult, Bill English says.

Z Energy says work has slowed on its $20 million biodiesel plant but it will be finished in the next nine months.

The mood was grim as Solid Energy employees filed out of the NBS Theatre in Westport today, just minutes after finding out the company was cutting 151 jobs, plus up to 15 contracting jobs - from its Stockton mine. The company is cutting 151 jobs, but some of the losses will be made up of unfilled vacancies, meaning 113 current staff will lose their jobs. This cuts the number of staff at the mine from 397 to 246. It follows Solid's decision to cut 185 jobs a year ago.

The West Coast mining industry has been dealt a heavy blow today, with 113 jobs to go at Solid Energy's Stockton mine.

Z Energy posted a 10 per cent increase in full-year operating earnings, as fuel and refining margins improved and the service station chain sold more fuel.

Job losses on the West Coast have been foreshadowed ahead of meeting between Solid Energy managers and workers at the Stockton Mine tomorrow.

Vector has formed a partnership with Tesla to bring its revolutionary home and business batteries to New Zealand.