The New Zealand dollar was little changed against the US dollar and reached its highest level this year against the yen.

The AA is advising motorists to shop around for petrol as more oil-producing nations slash production.

The New Zealand dollar gained along with other commodity-linked currencies.

Billing disputes are the main issue for utility customers but the number of those complaining about disconnections is growing.

OceanaGold Corp, owner of New Zealand's biggest gold mine at Macraes, is to delist from the NZX at the end of the year to reduce compliance costs.

Japanese lawmakers are revisiting a plan to build a $6.7 billion natural gas pipeline from Russia ahead of a visit by President Vladimir Putin.

BP decreased oil prices across New Zealand today with 3 cents per litre from both diesel and petrol.

COMMENT: Anyone with exposure to coal right now is enjoying a thrilling ride - though it's been a long time coming.

BP has spilled hundreds of barrels of oil in the North Sea, in a leak from its Clair platform.

A hikoi plans to deliver a 5000-signature petition to MPs calling for a moratorium on all seabed mining in New Zealand.

An oil glut is predicted into 2017 as supply outpaces demand with U.S. stocks slipping

The Government is defending its oil exploration programme against claims that it is dying.

Oil has been on a bull run after months in the doldrums, pushing up prices at the pump.

Motorists face higher costs as petrol edges up in response to higher global oil prices although prices could fall quickly due to weak demand.

Opus International Consultants sank into the red in the first half after writing down the value of its Australian and Canadian businesses.

Investors in New Zealand Oil & Gas are pressing the company to resume paying dividends now that it is profitable again.

The gain in first-half profit reflects a recovery in the price of gold.

Export log prices slip to a seven-month low amid a stronger Kiwi dollar and weaker markets.

Twenty-five years after the first diamonds were found in Canada's Northwest Territories, it's still a game of hurry-up-and-wait.

More competition is needed to cut petrol prices - and somebody should petition Gull to expand, Transport and Energy Minister Simon Bridges says.

A miner reveals the hidden pain of suffering a mental breakdown while living and working at a remote Australian site.

Solid Energy, which is being broken up and sold, has applied for consent to start a small mine near Reefton, allowing it to retain staff.

This Canadian diamond miner saw its share surge 30pc when it announced it had found the world's second biggest diamond.

Z Energy is allowed to buy Caltex and Challenge! petrol stations, but must sell 19 of its retail sites.

One solitary asteroid might be worth trillions of dollars in platinum and other metals. Exploiting these resources could lead to a global boom in wealth, which could raise living standards worldwide and potentially benefit all of humanity.

It's been boom and bust in the US oil game for a long time - but this bust is shaping up to be the biggest ever.

WATCH: Protesters disrupt big petroleum conference at Auckland's SkyCity.

A 6 cent increase in 91-octane petrol in the past week is likely the first of several increases to come, according to Automobile Association.