Josué Tanaka is responsible for the European Bank for Reconstruction and Development (EBRD) operational strategy and planning function and, since 2006, for leading its Energy Efficiency and Climate Change activities including the formulation and implementation of the Sustainable Energy Initiative. This initiative aims to scale up energy efficiency and renewable energy financing in central and eastern Europe and in southern and eastern Mediterranean countries. Energy efficiency financing areas include large energy intensive industries, SMEs, buildings, transport systems and municipal infrastructure. The EBRD operates both with direct financing to companies and by supporting the development of energy efficiency financing by local banks.

Josué Tanaka graduated from Princeton University with a Bachelor of Science in Engineering degree and holds a Master of Science and Ph.D. from the Massachusetts Institute of Technology.