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The AAPG/Datapages Combined Publications Database
AAPG Special Volumes
Abstract
DOI:10.1306/1032709SP226
2005 by The American Association of Petroleum Geologists.
Sources of Energy
ABSTRACT
During the second half of the 20th century, fossil fuels (oil, natural gas, and coal) provided 85–95% of the total energy consumed in the world. The other 5–15% was supplied mainly by hydroelectric and nuclear power. The fossil fuels can be 
used
to power land vehicles, ships, and aircraft and to generate electricity. Hydroelectric and nuclear power can be used only to generate electricity. To predict what sources will supply the demand for energy during the 21st century, this chapter reviews the essential information about past production and consumption, estimated reserves and resources, ultimate recovery, and potential
future availability of all presently known sources of energy. This review indicates that fossil fuels will remain as the principal source of the energy consumed in the world during the 21st century and certainly during its first half.
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