PT - JOURNAL ARTICLE AU - Lazkano, Itziar AU - Pham, Linh TI - Can Capital-Energy Substitution Foster Economic Growth? AID - 10.3368/le.92.3.491 DP - 2016 Aug 01 TA - Land Economics PG - 491--514 VI - 92 IP - 3 4099 - http://le.uwpress.org/content/92/3/491.short 4100 - http://le.uwpress.org/content/92/3/491.full SO - Land Econ2016 Aug 01; 92 AB - We study the ease of substitution between energy and other production inputs over time. We first develop a growth model with energy where our general production function allows for a nonconstant elasticity of substitution. Theoretical results show that the ease of substitution between capital and energy increases over time with the energy-capital ratio. Next, using country-level data from 108 countries between 1971 and 2011, we provide empirical evidence for a nonconstant elasticity of substitution between capital and energy. Our results imply that policies that increase the speed of the capital-energy substitution can foster long-run economic growth. (JEL O11, Q43)