Mexico's government hedged oil exports for next year at an average $US42 a barrel.

Adani's Carmichael coal mine has cleared another legal hurdle after the Federal Court threw out a challenge against the project.

A call by EnergyAustralia to halt sales of energy contracts by door-to-door sales teams has been rejected by others in the industry such as the industry's lobby group and other retailers.

With the clock ticking down on the controversial Ranger mine, government oversight is being cut.

Oil prices were largely unchanged on Friday in a volatile session.

The world's top performing hedge fund is shorting companies that are juicing their valuations by promising investors big dividends.

Oil increased after a report that Iran will participate in an informal meeting of OPEC members.

Rising wind power and gas exports from Queensland will work to keep both electricity and gas prices high, Moody's Investors Service has warned, with the big energy utilities Origin Energy and AGL likely to benefit with power prices to remain volatile.

If the planet started warming earlier than we thought and we are closer to warning levels, scientists find.

As it holds its position in fuel sales, Caltex is looking to its convenience stores for growth ahead of any impact from electric vehicles, which it expects is more than a decade away.

So we're all going to be driving electric vehicles over the next few years, right?

Lower refining margins squeezed Caltex Australia's earnings in the June half, notwithstanding a boost to volumes of petrol sold.

Bluescope Steel has warned it needs to continue to squeeze costs to justify committing to necessary upgrades at its Port Kembla steelworks.

US-based AMCI has proposed a mine that would encroach within about 900 metres of Forbesdale and a couple of kilometres of Gloucester.

Oil capped its strongest weekly increase in five months after entering a bull market.

Santos has plunged to a net loss of $US1.1 billion for the first half, dragged down by a heavy write-down on its new liquefied natural gas project in Queensland that it flagged earlier this week.

Woodside has warned of rising volatility in global gas markets heading into 2017 as more volumes hit the market, prompting it to hunt for oil and not gas

But chief executive Peter Coleman said the oil and gas producer was in a "robust" position as oil price forecasts improve into 2017.

Oil extended the longest winning streak in more than a year, as US crude inventories declined.

Shifting to a low-carbon energy future while maintaining competition and reliability will be a challenge for the new minister.

Origin Energy has warned government not to interfere in energy markets following recent wobbles in South Australia and ahead of likely further rises in electricity prices.

Origin Energy has suffered a loss of $589m after big write-downs, and core profit for 2015-16 plunged 41 per cent to $354m.

AGL may have withheld power supplies, exacerbating the threat of electricity disruptions in South Australia, which forced the state government to intervene to avoid electricity shortages.

Oil climbed to the highest close in more than four weeks on optimism about

Santos has taken a $US1.5 billion hit on the value of its gas export project in Queensland, which has been undermined by the collapse in oil prices.

The big three electricity retailers are charging as much as triple the rate for power in deregulated markets compared with the ACT, a report finds

US oil producers added rigs for the seventh week in a row. Brent rose 2 per cent.

Big payout to BHP Billiton raises questions about viability of the other big coal mine in the region.

The future of the Portland aluminium smelter in Victoria - and the jobs of hundreds of workers -  is up in the air as the owners seek to renegotiate power supply contracts in a bid to keep the plant in operation.