John Moroney, in his article “Energy, Capital and Technological Change in the United States” (1991), specifies and estimates aggregated production functions designed to identify the roles of capitallabor substitution, energylabor substitution and technological change as sources of labor productivity growth. My work is based on the paper of John Moroney mentioned above, and has the objective of making an analysis similar to that made by Moroney but in the Colombian context. The goal of this work is to identify the impact on labor productivity of energy, capital and technological change, using appropriated CobbDouglas models. The paper also presents a comparative analysis of two cases.