Osaka Gas imports LNG, that is natural gas liquefied in producing countries. This LNG is a liquid with a temperature of minus 160 degrees Celsius, and when it vaporizes back into natural gas it absorbs heat from the surroundings giving it cooling properties (cryogenic energy). This energy is equivalent to about 240 kWh of electricity per ton of LNG. Recovering this as kinetic energy and using it for power generation is referred to as cryogenic power generation.