Mr. Tachibana served as R&D manager for a long time within TEPCO. In 2006, he was appointed as Fellow, Sustainability Advisor to the Board of TEPCO, who reports to Chair and President on various aspects of sustainability issues, including climate change with special emphasis. He has attended UNFCCC COP/CMP, SBs, and AWGs as an observer since Bali COP13/CMP3 and been instrumental in formulating thoughts and positions on climate negotiations not only for TEPCO but also for Keidanren. He has been an active member of Energy and Climate Focus Area Core Team of WBCSD, and has been instrumental in bringing Japanese business viewpoints to international energy and climate debates. In 2008 he was elected as Chair of WBCSD Task Force of Keidanren.