The economy of Iran
is a mixed and transition economy with a large public sector. Some 60% of the economy is centrally planned. It is dominated by oil and gas production, although over 40 industries are directly involved in the Tehran Stock Exchange, one of the best performing exchanges in the world over the past decade. With 10% of the world's proven oil reserves and 15% of its gas reserves, Iran is considered an "energy superpower"
a complex volatile mixture of hydrocarbons with some sulfur, nitrogen, oxygen, and trace metals, is the largest single source of energy in the world, accounting for approximately 35-40% (in oil equivalents) of the energy consumed in the world