Tokyogasgroup csr report

Contribution to the Environment

Effective Use of Energy by Gas Cogeneration Systems


Effective Use of Energy by Gas Cogeneration Systems

Tokyo Gas has long been interested in saving energy at our offices. We equipped our Hamamatsucho Head Office Building with its first gas cogeneration system as far back as 1984, and upgraded it in fiscal 2008 to take advantage of the latest cogeneration technology,* with the new system entering operation in April 2009. As a result, our head office building CO2 emissions have been cut by some 1,400 tons annually.

When all-out efforts were needed to save power during the summer of 2011 following the Great East Japan Earthquake, all the Group's gas CGSs were put to work and achieved significant power savings.

* Upgraded gas CGS: 930 kW-class gas engines x 2, total efficiency of 72% (38% power generation, 32% waste heat capture)
DFF Inc., Corporate Social Responsibility Sect, 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.