Oil is relatively inexpensive today. Will it
remain inexpensive enough to use as a fuel in our cars for the
next twenty years? How about fifty years from now?
Determining how long the world's supply of oil will last is difficult
because it depends on a lot of factors. However, if we make certain
assumptions--such as those to the right--we can make a rough estimate.
On the next page you will explore how long the
inexpensive oil in the world will last. We say inexpensive because
there will always be some expensive oil available. As prices rise,
companies can afford to extract oil from new places--but it
also becomes less practical to use that oil in the quantities we
Click on each region to
find out how long the oil supply in that region could meet the
world's increasing demand for this important fuel. The numbers
correspond to the number of years that the supply would last if
it were the only oil in the world. In each case, there are two
numbers, a high estimate and a low estimate.
World population will plateau at 10 billion people in 2100.
By 2100, the average person in the world will be consuming
as much oil as the average American does today.
All increases in population, production, and consumption will
be linear and proportional.
Supply includes all known reserves and projected reserve