Liquefied Petroleum Gas (LPG) is a natural hydrocarbon fuel made up of propane and butane. It has the special property of becoming liquid when under pressure, and reverting to gases at atmospheric pressure. This means it can be easily and conveniently stored as a liquid.

 About 60% of the world supply of LPG comes from the separation of natural gas products, and 40% is a by-product from the refining of crude oil. In the past, LPG has been considered as waste and flared off; now it is recognised as a major energy source. Environmental issues are now a part of everyday life.

Two topics high on the agenda are poor air quality, particularly in urban areas, and global warming. Vehicle emissions, ie particulates, nitrogen oxides (NOx) and carbon dioxide (CO2), are recognised as one of the main contributors to these problems.

LPG emits similar CO2 to diesel and considerably less than petrol. It is also much cleaner than diesel in terms of NOx and particulates which impact on our local air quality.