Technology Diffusion and Development

This chapter discusses the technology diffusion and development that play a key role in climate change mitigation. Most of the authors are engineers with long business experience in this field. In Sect. 9.1, the authors discuss the experience of the Japanese iron and steel industry, mainly focusing on technology diffusion. Firstly, the sector’s efforts toward mitigation and current mitigation technologies are explained. Then, the importance of technology diffusion is examined by a multilateral sectoral approach. The authors argue that establishing solid public–private partnerships is crucial in this respect. In Sect. 9.2, the authors discuss how a balanced approach to technical innovation brings unimaginable success. Firstly, the development of the Prius is introduced based on the integrated engineering that harmoniously combines technologies and maximizes values for each customer and society. It is followed by discussions of future conventional powertrains, electrification, and field tests associated with advanced ITS in a model city to popularize new technologies to further reduce CO2 emissions and also resolve other issues such as accidents, congestions, and mobility divides.