Overview

Energy costs in the economy amount to only a few percent of gross domestic product, but their importance to economic growth is much greater than their apparent number. Energy is used in almost all production and consumption activities, and energy price changes induce significant spillover effects throughout the economic system. More importantly, stable and affordable access to energy is a critical factor in determining the rate of capital accumulation in a domestic economy and, hence, labor productivity growth. The expansion of production per hour worked is achieved by using more and higher quality capital, which requires more energy to operate. This book aims to provide robust observational facts on energy productivity improvement (EPI) and to analyze the mechanisms of EPI achieved in Japan’s economic growth from 1955 to 2019. Linking the productivity account with energy statistics enables us to attempt not only to develop a better indicator of energy productivity but also to evaluate the EPI with other significant changes in the production process, such as capital productivity, labor productivity, and even the overall efficiency measured in terms of total factor productivity. This book is a valuable resource for researchers and policymakers seeking to understand the role of energy throughout the economy and for economic planners seeking to ensure the efficient use of energy now and into the future.

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Koji Nomura is Professor at Keio Economic Observatory, Keio University, Tokyo. Nomura received a BA in 1993, an MA in 1995, and a Ph.D. in 2005 from Keio University. He has previously served as an assistant professor (1996–2003) and associate professor (2003–2017) at Keio University; a CBG fellow at JFK School of Government, Harvard University (2003–2005); and an economist at the OECD (2006–2007); a faculty fellow at the Research Institute of Economy, Trade, and Industry (2013–2019); a consultant for the United Nations Department of Economic and Social Affairs (2015–2016); and chief research officer at The 21st Century Public Policy Institute, Keidanren (2019–2020). He currently works as a project manager for the APO Productivity Database at the Asian Productivity Organization (2007–present); a visiting senior fellow at the Research Institute of Capital Formation, Development Bank of Japan (2009–present); and a visiting fellow at the Economic Social Research Institute, Cabinet Office, Government of Japan (2005–2008 and 2012–present). His research focuses on economic measurement, productivity analysis, and energy economics. His book, Measurement of Capital and Productivity in Japan (in Japanese), published by Keio University Press in 2004, was awarded the 48th Nikkei Prize for Excellent Books in Economic Science. He received the Keio Award in 2005.

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