. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. 1970 1980 YEAR Figure 18. Energy-related carbon dioxide releases, 1960-1990. Carbon dioxide weighs times as much as carbon. Source: Department of Energy 1992. 1. Population. We assume a very low growth rate, as given in the 1993 Information Please Environmen- tal Almanac ( per year). 2. Per capita gross state product (GSP). Growth rate is obtained from extrapolating the GSP from 198
. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. 1970 1980 YEAR Figure 18. Energy-related carbon dioxide releases, 1960-1990. Carbon dioxide weighs times as much as carbon. Source: Department of Energy 1992. 1. Population. We assume a very low growth rate, as given in the 1993 Information Please Environmen- tal Almanac ( per year). 2. Per capita gross state product (GSP). Growth rate is obtained from extrapolating the GSP from 1980 to 1990; growth rate is per year. 3. Energy/GSP. This is the energy intensity of the Illinois economy, which has been decreasing. We use three scenarios for continued decreasing energy intensity: -1% per year, -2% per year, and -3% per year. The first figure is relatively conservative, while -3% is at the outer edge of energy efficiency enthusiasts' projections (Bureau of Economic and Business Research 1992, Department of Energy, 1992). As Figure 20 shows, the projections range from growth to a decrease in Illinois energy consumption. A Table 5. Carbon content of fossil fuels. Carbon content in Carbon content in Fuel (unit) tons per unit tons per million BTU Coal (ton) Oil (barrel) Natural gas (thousand cu ft) RATIO OF TOTAL CARBON DIOXIDE TO TOTAL ENERGY PROJECTED ILLINOIS ENERGY USE. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Dept. of Energy and Natural Resources; Critical Trends Assessment Project. Springfield, Ill. : Ill. Dept. of Energy and Natural Resources
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