. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. RESOURCE ANAL YSIS NATURAL GAS. Figure 15. Consumption and production of natural gas in Illinois. Reserves are negligible. Note that produc- tion is in million cubic feet per year and consumption is in billion cubic feet per year. Sources: Heister and Neely 1987, Samson 1992, Department of Energy 1992. million cubic feet in 1973. Production fell in the early 1980s due to the falling production
. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. RESOURCE ANAL YSIS NATURAL GAS. Figure 15. Consumption and production of natural gas in Illinois. Reserves are negligible. Note that produc- tion is in million cubic feet per year and consumption is in billion cubic feet per year. Sources: Heister and Neely 1987, Samson 1992, Department of Energy 1992. million cubic feet in 1973. Production fell in the early 1980s due to the falling production of some of Illinois' major oil fields. The variation in the late 1980s is accounted for by the number of oil wells that were in operation. Consumption of natural gas in Illinois surged during the late 1960s and early 1970s with a peak of 1229 billion cubic feet in 1972 (Figure 15). At the beginning of the 1980s the consumption of natural gas began to fall, and it reached a low in 1987 of 873 billion cubic feet. The decline of natural gas consumption during the 1980s is partially explained by warm winters. Illinois' natural gas production is about % of its consumption, and reserves are negligible (Heister and Neely 1987). Therefore, Illinois' static lifetime for natural gas reserves is less than one month. (It is possible that there is deep gas as yet undiscovered, but that would likely be much more expensive to produce than today, and it is not included.) Table 4 shows that, compared with Illinois' value of less than one month, the industrialized world and the whole world have gas static lifetimes of 15 and 60 years, respectively. ENERGY/ENERGY-RELATED C02 RELEASES Illinois' energy consumption peaked in the late 1970s, just before the second round of world oil price shocks (Figure 16). The reduction from that peak is almost all from reduced oil consumption (Figure 17). Illinois' energy consumption today is approximately 80% from fossil fuels, which produce CO, (Figure 16).
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