I use U.S. patent data from 1970 to 1994 to estimate the effect of energy prices on energy-efficient innovations. Using patent citations to construct a measure of the usefulness of the existing base of scientific knowledge, I consider the effect of both demand-side factors, which spur innovative activity by increasing the value of new innovations, and supply-side factors, such as scientific advancements that make new innovations possible. I find that both energy prices and the quality of existing knowledge have strongly significant positive effects on innovation. Furthermore, I show that omitting the quality of knowledge adversely affects the estimation results.
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
8284.
Length: Date of creation: May 2001 Date of revision: Handle: RePEc:nbr:nberwo:8284
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Find related papers by JEL classification: O31 - Economic Development, Technological Change, and Growth - - Technological Change - - - Innovation and Invention: Processes and Incentives Q40 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - General
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