Oil is headed for its biggest two-year loss on record as an expansion in U.S. crude stockpiles exacerbated a global glut.

For an industry that already was pushing its cost-cutting efforts to the limits, the new declines are a devastating blow.

The price of petrol is falling, aided and abetted by a regional price war, but has it declined far enough, given the slump in oil prices?

Wall Street moved lower with the price of oil amid concern about the global glut at a time of weakening worldwide economic growth.

The Court of Appeal has dismissed an appeal by New Zealand Carbon Farming against a decision in favour of Mighty River Power over a $34.7 million liability.

Fuel company Z says it has built New Zealand's first commercial-scale biodiesel plant, at Wiri, for $26 million.

Henri Eliot talks to professional directors Mark Verbiest, Tony Carter, Doug McKay and Rob Campbell about their focal points in 2016.

Genesis Energy named AGL Energy executive Marc England as chief executive, replacing Albert Brantley who leaves after seven years

Mike Bennetts has driven Z Energy since its inception and this year has been a particularly strong one for shareholders.

Contact Energy looked to be nailing health and safety.

A cartoon circulating on Twitter carries a warning for the oil industry.

Homeowners who suffered up to three days without power during a huge blackout will get just $50 each.

The world is running out of storage facilities supplies of oil and may soon exhaust tanker space, raising the chances of a plunge in crude prices.

One of the architects of the world's biggest sovereign wealth fund says pension plans face increasingly complex decisions over responsible investment, particularly in energy.

An employee who took customer details to start a competing gas supply business has been ordered to pay millions in damages.

Vector has launched the first rapid electric vehicle chargers in downtown Auckland.

Executive Mark Binns says a new wind farm is one of the options on the table if Meridian can't convince Genesis to keep open two electricity plants.

Infratil, the investment company managed by Wellington-based investment bank Morrison & Co, posted a 14 percent gain in first-half pretax earnings.

The way electricity lines companies charge for their services is all wrong and needs to change if we are to take advantage of emerging technologies, the Electricity Authority says.

Tauranga-based Trustpower will pay $5 a share in cash in a full takeover offer for King Country Energy, provided it gets at least 70.2 percent of the company.

NZOG declared today a 34.7 percent increase in "developed reserves" at the Kupe oil and gas field.

Electricity usage spiked during Sunday's Rugby World Cup semifinal.

Two years on, money ordered paid in 90 days is being drip-fed.

More than anything, I like the diversity and the challenge that Vector offers in business.

An international conglomerate owed $27.5 million by Solid Energy has issued a High Court challenge to the arrangement which the state-owned mining company's creditors voted through last....

New Zealand shares rose yesterday, led by A2 Milk Co, after it raised $40 million in an oversubscribed placement.

Sixty-five staff to axed as operator admits there is no chance whatsover of finding a buyer for Waikato mine that's cost about $500,000 a month to keep open.

New Zealand Steel's blue collar workforce has agreed to forego annual bonus payments during unprofitable years.

The recent rally in Z shares convinced Infratil and the Super Fund that it was time to sell.