- The U.S. currently holds 750 billion barrels of oil shale.
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That is enough oil shale to supply the U.S. for 100 years.
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It is estimated that the U.S. has 32 billion barrels of tar sands.
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That is enough tar sands to supply the U.S. for 4.5 years.
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The U.S. holds an estimated 231 trillion cubic feet of natural gas reserves onshore.
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The U.S. has an estimated 31 billion barrels of oil onshore.
Sources: U.S. Energy Information Administration, U.S. Bureau of Land Management