Land bought by Meridian for its controversial $2b wind farm is on the market spelling the final chapter of the failed project.

Mr and Mrs Popularity will meet again today in Auckland when German Chancellor Angela Merkel jets into town to meet Prime Minister John Key.

If I were running Mercury, I'd regard people like myself as perfect customers, writes Brian Rudman.

New Zealand-founded LanzaTech has been named the world’s hottest bioenergy company in a prestigious annual list.

Infratil will return $120m to shareholders as a special dividend after it sold its Australian energy assets for a net $670m.

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.

Mighty River Power has announced a possible $50 million share buy-back in the coming year.

Mighty River Power told shareholders its 2015 earnings will be at the lower end of guidance at the Auckland-based company's annual meeting today.

Made up your mind to get solar panels on your roof? Here's what you need to know.

For many, the moment of deepest despair comes as they turn their backs on the swanky seaside suburb of St Heliers.

A husband and wife team could help change the way products as common as car tyres are made by recycling chemicals from greenhouse gases.

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.

Up to 80 per cent of Auckland electricity customers have signed contracts that allow their hot water to be cut off - but many were unaware until the blackouts.

Some Auckland residents were without hot water until late this morning following yet another fault with Vector’s electricity network.

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.

The Herald looks at how the Auckland blackout affected each suburb and what residents and shop owners did to cope.

Heat pumps are not only energy-efficient ways to keep homes warm, but half the respondents in a survey also believe they have other health benefits.

Oil and gas explorers gathering in Auckland next week are breathing a sigh of relief at the election result but face the age-old challenge - making a major discovery.

Oil companies are forging ahead with a plan to import more fuels to minimise disruption from planned strike action at NZ's only oil refinery.

It's that happy time of year for hundreds of thousands of Auckland households - the annual dividend payout from the AECT is in the mail.

For nearly a year, it turns out, the Pike River mine could have been made safe to enter.

Kathmandu, which today posted a 4.5pc decline in annual profit, said Australasian earnings should rise in the coming year.

Investors in Genesis Energy, Mighty River Power and Meridian Energy were more than $600 million richer on paper at one point yesterday after their shares were boosted by National's decisive victory.

Shares in Mighty River Power have finally rallied over their issue price after trading substantially below it for most of the company’s life.

Since 2002 our electricity market has brought us price rises of 46 per cent above inflation. Why?

Saudi Arabia will need to keep cutting oil output to sustain prices above $100 a barrel as global oil demand weakens, analysts say.