Liquefied Petroleum Gas (LPG) is obtained by extraction from natural gas or from refinery processes.
It is stored under pressure, but because this causes it to liquefy it needs less storage space and can be handled more easily than it could be as a gas.
Most LPG is used for fuel, but it is also used as a refrigerant and an aerosol propellant. As a fuel it is used for domestic gas supplies, as an automotive fuel and, to a limited extent, for electricity generation.
Like other oil and gas products, demand for LPG is cyclical.