As the Executive Director Emeritus of the International Energy Agency (IEA), Nobuo Tanaka is Chairman of the steering committee of the Innovation for Cool Earth Forum (ICEF), which was established by former Prime Minister Shinzo Abe in 2014. As Executive Director of the International Energy Agency (IEA) from 2007 to 2011, he initiated a collective release of oil stocks in June 2011.

Nobuo Tanaka began his career in 1973 in the Ministry of Economy, Trade and Industry (METI), and has served in a number of high-ranking positions, including Director-General of the Multilateral Trade System Department. He was deeply engaged in bilateral trade issues with the US as Minister for Industry, Trade and Energy at the Embassy of Japan, Washington DC. He has also served twice as Director for Science, Technology and Industry (DSTI) of the Paris based international organization, OECD. As CEO of Tanaka Global Inc., he advises several Japanese and international companies.