Prime Minister John Key says he has no problem with former Solid Energy boss Don Elder appearing before a select committee to answer questions.

Gas station chain Z Energy has confirmed this morning that it is being prepared for a sharemarket listing by its main shareholders, Infratil and the NZ Super Fund.

Geothermal is the ultimate renewable energy source - and one reason why Mighty River Power is kicking off the government's asset sales. Energy reporter Grant Bradley visits the company's brand-new plant

Former chief executive of Solid Energy Don Elder could be forced to appear before a government select committee.

Former PM Dame Jenny Shipley was quizzed about her reputation as a company director today when she appeared before the commerce select committee at Parliament.

The unresolved issue of Maori water rights may yet have an impact on Mighty River's future operating costs.

Dennis Tito is planning a private mission to Mars in 2018. Inspiration Mars Foundation aims to inspire and wants to take advantage of the way the planets line up in 2018.

Solid Energy wants to keep secret details of the final payment made to former chief executive Don Elder.

Officials are investigating a proposal which could lead to the Pike River mine being turned into an opencast coal pit stretching into a national park.

State Owned Enterprises Minister Tony Ryall has denied allegations from the Opposition that the former chairman of financially troubled Solid Energy approved a big pay rise for chief executive Don Elder as one of his last acts in the job.

The Supreme Court has dismissed the appeal by the New Zealand Maori Council to block the Mighty River Power partial privatisation.

Maybe you've done a backflip or two in your time, but were you ever driving a Mini Cooper at the time?

All manner of people, policies and practices are being blamed for the near-collapse of Solid Energy, the state-owned coal company that is burdened with $389 million in debt.

The Government was worried about Solid Energy's ambitious investment plans and rosy view of coal prices as far back as 2009.

Genesis Energy chair Jenny Shipley says the state owned enterprise is ready for partial sale but is coy on whether she will be leading the company on the sharemarket.

Genesis Energy has turned in a tidy-looking result for the six months to December 31, with net profit after tax up 85 per cent to $71 million.

The state-owned electricity generator and retailer yesterday reported an underlying net profit after tax of $88 million for the latest half-year after non-cash items

Meridian Energy says it's ready for partial privatisation and expects a significant uplift in operating earnings after transmission outages knocked its performance.

The Government and Treasury missed the chance to step in and force change at troubled state-owned coal company Solid Energy when problems became apparent to officials and ministers about 18 months ago, the Opposition says.

Prime Minister John Key has denied that the Solid Energy crisis and Telecom job cuts are a black mark against the Government's handling of the economy.

Huntly East miners are bracing themselves for more redundancies as the Government scrambles to fix Solid Energy.

Mighty River Power says the driest summer in at least five years will affect its full-year result as it cuts back on generating power from its Waikato River dams.