For more than 40 years since it first introduced LNG to Japan in 1969, the Tokyo Gas Group has worked to establish and advance its LNG value chain in an effort to spread and expand the use of natural gas, which excels in environmental soundness and supply security. The benefits of using LNG as a feedstock for city gas are as follows.
Low PollutionLNG is a clean source of energy without any hazardous substances such as SOx. When burned, it produces 20% to 40% less CO2 compared to oil, coal and other fossil fuels.
The abundance of natural gas reserves around the world ensures a stable supply of raw material, which is fundamental to providing a long-term supply of city gas to customers. Also, the calorific value of city gas produced from LNG today is 2.15 times* higher than that of the gas initially produced and supplied by Tokyo Gas. This has increased our transport and storage capacity, enabling us to respond efficiently to any rise in demand.
*Calorific value of gas produced by Tokyo Gas
Calorific value of current city gas based on LNG: 45 MJ/m3 (10,750 kcal/m3)
Calorific value of gas initially produced by Tokyo Gas: approx. 21 MJ/m2 (5,000 kcal/m2)
Economic Advantages of ProductionCity gas using LNG as feedstock is produced by pouring seawater to vaporize LNG stored in a tank at minus 162°C and adjusting the calorific value. The process does not require large-scale manufacturing facilities, thereby keeping production costs down.
High Efficiency of TransportAfter natural gas is vaporized to produce city gas at the LNG terminal, it is directly delivered to the point of consumption through pipelines, thus causing no loss due to energy conversion or transportation.