Gas that has been cooled until it becomes a liquid (at approximately 161 degrees Celsius). LNG occupies 600 times less space than natural gas in its gaseous form. It is transported in purpose-built ships. It requires a liquefaction plant (land based or as part of a vessel) to convert the natural gas from its gaseous form to LNG, and a regasification plant to reconvert it before injection into a gas transmission network (such as the national transmission system (NTS)) or other pipeline. For more information on LNG, see Practice note, Financing liquefied natural gas projects: What is LNG? and Legal update, CEER report on the role of LNG to improve security of supply.