Kenji Tanaka is a project associate professor of Internet of Energy Lab. in the University of Tokyo. He also belongs to the Department of Technology Management for Innovation at Graduate School of Engineering. He studies on "Bolckchain-based Energy network in Japan". His research interest also includes Blockchain based service design, Digitalgrid, Internet of Energy, Electric Vehicles, Demand Forecasting, Logistics, etc.. Kenji Tanaka received the M.E. degree in Information Engineering in 2000, the Ph.D. degree in Systems Innovation in 2009 from the University of Tokyo, Japan. He started his career at Mckinsey & Co. as a management consultant, and joined Japan Industrial Partners, a private equity investment firm, as an investment officer. He became an assistant professor at the School of Engineering at the University of Tokyo in 2006. He became a project associate professor in 2013. In the first half of 2012 he became a member of national policy advisory for Ministry of Land, Transportation, and Tourism, and was engaged in planning the policy strategy for the future energy-efficient city with the Minister.