Energy Transitions and Technology Change: \Leapfrogging" Reconsidered T. Robert Fetter∗ January 2018 Preliminary Draft Please do not cite or circulate without permission Abstract Innovations in energy production, conversion and efficient use create oppor- tunities for low-income nations to skip or \leapfrog" over older technologies that dominated the development paths of today's industrialized countries. Nonethe- less, countervailing trends, policy choices, or institutional features may hinder the ability of low-income countries to take advantage of these opportunities. Understanding the relationship between economic growth, energy consump- tion, and pollution provides an important guide for forecasting energy use and environmental impacts. Some prior research suggests that the energy intensity of economic growth is higher for today's developing countries than developing countries of the past. I assemble an unbalanced panel of energy consumption for 124 countries, extending as far back as 1861 for some countries; this long time series allows me to analyze changing relationships between energy use and economic growth at a timescale more appropriate for the long-term nature of energy investment. Using methods consistent with prior research, but a longer time series, I find evidence that the energy intensity of economic growth is in fact lower for today's developing countries. In ongoing research, I analyze how the relationship among economic output, energy use, and pollution has changed over time, as well as heterogeneous institutional, financial and environmental factors that predict greater or lesser energy intensity with respect to economic growth. ∗Nicholas Institute for Environmental Policy Solutions, Duke University: Gross Hall, 140 Science Drive, Suite 101, Durham NC 27708;
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