Liquefied natural gas: Australia's quiet export giant

Natural gas is invisible, odourless, and travels through pipes for most of its life. But moving it across oceans requires a transformation. Cool the gas to around minus 162 degrees Celsius and it shrinks to roughly one six-hundredth of its original volume, becoming a clear liquid that can be loaded onto specialised ships. That liquid is liquefied natural gas, or LNG, and it is one of the most valuable commodities Australia produces.

The chain from wellhead to burner

LNG production begins at offshore or onshore gas fields, where natural gas is extracted and piped to a processing facility called a liquefaction terminal. There it is purified, chilled, and loaded into double-hulled cryogenic tankers. At the destination, usually a purpose-built import terminal in an energy-importing country, the liquid is warmed back into gas, fed into local pipelines, and ultimately burned in power stations, industrial furnaces, and household cooktops.

The infrastructure at every step is enormously capital intensive, which is why LNG projects are typically structured around long-term supply contracts, often spanning fifteen to twenty years, signed before construction even begins.

Who buys and who sells

The global LNG market is shaped by geography. Countries with large gas reserves but few neighbours to pipe it to, such as Qatar and Australia, became exporters. Countries with dense energy demand but limited domestic gas, particularly Japan, South Korea, and China, became buyers. In recent years, demand has also risen in South and Southeast Asia as those economies industrialise.

Australia operates several major LNG export projects, concentrated in Western Australia and Queensland. These projects represent decades of investment and generate substantial export revenue each year, making LNG one of the country's top export earners alongside iron ore and coal.

Price and geopolitics

LNG prices are set in a patchwork of ways. Some contracts tie the price to oil benchmarks. Others reference spot markets, which can be volatile. When global events disrupt supply from one region, prices can spike sharply, as buyers scramble for available cargoes. This market sensitivity means Australian LNG revenues can swing dramatically from year to year.

The fuel's role in global energy security has grown. Countries seeking to reduce dependence on pipeline gas from politically sensitive suppliers have increasingly turned to LNG as a more diversifiable source. This has widened the pool of potential buyers for Australian exports.

What it means for Australia

LNG export revenue directly funds public services through royalties and company taxes. The sector supports tens of thousands of jobs in construction, operations, and supply chains, concentrated in Western Australia and Queensland but with flow-on effects nationally. At the same time, the domestic gas market is intertwined with export dynamics, and gas prices for Australian households and manufacturers can be affected by global demand pulling supply toward export terminals. The long-term future of LNG exports depends on how quickly major customer economies transition their energy systems, making it one of the more closely watched strategic questions in Australian trade policy.

The bottom line

LNG is a cornerstone of the Australian export economy and a critical piece of Asian energy security. Understanding it means understanding a significant share of where Australia's national income comes from.

This article was compiled by AI and screened before publishing. See our editorial standards.