Tokyogasgroup csr report

Decarbonization through Energy Supply

Measures at the City Gas Production and Supply Stages

Actions at the City Gas Production and Supply Stages

Natural gas extracted abroad is liquefied at -162°C and transported by tanker as LNG. Tokyo Gas produces city gas at the Negishi, Sodegauwa, Ohgishima, and Hitachi LNG terminals and delivers it to customers via its extensive pipeline networks.
The energy efficiency in producing city gas from LNG stands at 99% or more. Energy loss is also extremely slight in city gas supply because it is transmitted directly through pipelines to consumption areas. In addition, we are making further efforts to save energy, such as by using LNG cold energy.
 
Ohgishima LNG Terminal Ohgishima LNG Terminal
Sustainability Dept., General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.

Using LNG Cold Energy

Third-party Assured
Using cold energy of -162°C LNG at various temperatures, we engage in cryogenic power generation, operate cold storage warehouses and produce dry ice. The Negishi LNG Terminal depends on cryogenic power generation for about 38% of its power consumption. In fiscal 2018, it generated 24,751 MWh of electricity, using cold energy of LNG, and reined in CO2 emissions by about 17,000 tons.

Cold Energy Use (FY2018)

Purpose LNG Used for Cold Energy (1,000 tons)
Supplied to subsidiaries 821
Electricity generated using cold energy 616
BOG*1, other 1,424
Total 2,862
*1 Boil-off gas is generated by evaporation of LNG due to heat entering tanks.
Sustainability Dept., General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.

Measures to Reduce Methane Emissions

Methane accounts for less than 1% of the Tokyo Gas Group’s greenhouse gas emissions. It is released mainly during city gas production and gas pipeline construction work. The Group strives to further reduce methane emissions by, for example, cutting the amount of sampling gas used in analyzing produced gas, preventing venting during the shutdown of a calorific value adjustment system, planning pressure reductions to curb methane emissions into the atmosphere during pipeline construction work, and developing gas adsorption and recovery systems.
Sustainability Dept., General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.