Separating the Changing Composition of U.S. Manufacturing Production from Energy Efficiency Improvements: A Divisia Index Approach

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Abstract
The demand for energy is normally broken down into five sectors: industry, utilities, the residential sector, the commercial sector, and transportation. Industry is the most heterogeneous of these with manufacturing accounting for about 80 percent of total industrial energy demand. Manufacturing is itself a very heterogeneous collection of production activities. As defined by the Standard Industrial Classification (SIC) method of the U.S. Department of Commerce, there were 448 manufacturing sectors in 1972.