Liquefied Natural Gas (LNG) is simply natural gas in its liquid form, and continues to be the most economical way to move natural gas from key production areas to importing countries. It is the same natural gas millions of homeowners use every day. Natural gas and LNG are composed primarily of methane (80% – 99%) and also contain small quantities of ethane, propane and heavier hydrocarbons, as well as other minor substances.

When the temperature of natural gas is reduced to -161 degrees Celsius, at atmospheric pressure, the gas changes from a vapour to a liquid. This process reduces the volume of the gas by a factor of more than 600 - similar to reducing the volume of a beach ball to the volume of a ping-pong ball. Once the gas has been shrunk to a fraction of its original volume, it can be loaded onto tankers for transport to various destinations.

Once it reaches its destination, LNG is unloaded where it is stored as a liquid until it is warmed back to natural gas. The natural gas is then sent through pipelines for distribution to businesses and homeowners or used as a fuel for heavy-duty vehicles.

Of all the fossil fuels, natural gas has the lowest level of carbon dioxide emission per unit of energy. It is being used as an alternative automobile fuel, particularly in urban areas where local air quality is an issue. It is also an important fuel for electricity generation, as feedstock for ammonia in fertilisers and the primary source for hydrogen that is being used in fuel cell vehicle technologies.

The ability to convert natural gas to LNG provides consumers with access to vast natural gas resources worldwide.

LNG is odourless, non-toxic and non-corrosive, and if spilled, LNG would not result in a slick. With the absence of a source of ignition, LNG evaporates quickly and disperses, leaving no residue. There is no environmental cleanup needed for LNG spills on water or land.

Learn more about LNG

The LNG Process