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Z Less than 0.005 quadrillion Btu. X Not applicable.
2 Geothermal heat pump and direct use energy.
3 The solar thermal component of 0.06 quadrillion Btu for residential and commercial use is calculated by presuming an overall efficiency of 50 percent for all three categories of solar thermal collectors, a 1,500-Btu per square foot average daily insolation, and the potential thermal energy production from the 219 million square feet of thermal collectors produced between 1980 and 1999.
4 Generation of electricity by nonutility power producers is included in the industrial sector, not the electric utility sector. Covers facilities of 1 megawatt or greater capacity.
5 Wood, wood waste, wood liquors, peat, railroad ties, wood sludge, spent sulfite liquors, agricultural waste, straw, tires, fish oils, tall oil, sludge waste, waste alcohol, municipal solid waste, landfill gases, and other waste.
6 Geothermal electricity generation, heat pump, and direct use energy.
7 Hydroelectricity generated bypumped storage is not included in renewable energy.
8 Ethanol blended into motor gasoline.
9 For Btu conversion rates, see source Appendix Table 6.
10 Includes electricity from Mexico that are derived from geothermal energy.
11 Includes electricity net imports from Canada that are derived from hydroelectric power.
Source: U.S. Energy Information Administration, Renewable Energy Annual. http://www.eia.doe.gov/bookshelf/renew.html
These tables are based on figures supplied by the United States Census Bureau, U.S. Department of Commerce and are subject to revision by the Census Bureau.
Copyright © 2006 Photius Coutsoukis and Information Technology Associates, all rights reserved.