Before joining JREF in August 2013, he served as the Director General of the Bureau of Environment, Tokyo Metropolitan Government, for three years, covering a broad range of environmental issues including energy, climate change, waste management, pollution control, natural environment, and sustainable development. His notable achievements include reducing air pollution and PM emissions through “No Dirty Diesel Vehicle Strategy in Tokyo”, and implementing Japan’s first Cap-and-Trade Program in Tokyo in 2008, involving the industries and building a grand consensus. His active leadership in promoting renewable energy and energy efficiency has formed the foundation of Tokyo’s energy policy. He was awarded Haagen-Smit Clean Air Awards by California Air Resources Board in 2014. His latest publication is “Energy Strategies of Municipality Governments” (Iwanami, 2013, Japanese). He also serves as part-time lecturer at the University of Tokyo.