Energy, fuels, and chemicals 



3153 



I960 



1965 



1970 



1975 



1980 



1985 



1990 



Figure 26-1. — U.S. energy supply projected to 1990. Top line represents 100 percent of 

 the energy supply which is broken down into contributing percentages from oil, gas, 

 coal, and nuclear energy, and hydro, geothermal and solar energy. (Drawing after 

 Exxon Company 1978.) 



mal energy have small growth potentials due to the limited number of sites where 

 such energy is available. 



The Department of Energy estimates the proven domestic reserve of coal in 

 the United States at about 4,000 quads (fig. 26-2). However, logistical and 



4000 



300 



PROVEN 



DOMESTIC 200 H 

 RESERVES 



(QUADS) 



100- 



OIL 



GAS 



COAL 



RENEWABLE 



NON -RENEWABLE 



Figure 26-2. — Proven reserves of energy in the U.S. Renewable reserves are considered 

 to be 730 million acres of standing forests with an annual production of 7 to 8 quads. 

 Oil, gas, and coal are the non-renewable resources. Coal is the largest reserve with 

 about 4,000 quads, about 8 times the oil plus gas total. (Drawing from Department of 

 Energy.) 



