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)