1st OPEC Conference, Baghdad, September 10–14, 1960

OPEC Board of Governors, Geneva, September 3, 1962

7th OPEC Conference, Jakarta, November 23–28, 1964

32nd (Extraordinary) OPEC Conference, Vienna, March 16–17, 1973

Venezuelan President Luis Herrera Campins visits OPEC Headquarters, February 14, 1980

73rd (Extraordinary) OPEC Conference, Geneva, January 28–30, 1985

OPEC Press Conference, Vienna, December 14, 1987

107th OPEC Conference, Vienna, March 23, 1999

The Organization of the Petroleum Exporting Countries (OPEC) is a permanent, intergovernmental Organization, created at the Baghdad Conference on September 10–14, 1960, by Iran, Iraq, Kuwait, Saudi Arabia and Venezuela. The five Founding Members were later joined by nine other Members: Qatar (1961); Indonesia (1962) – suspended its membership from January 2009; Socialist Peoples Libyan Arab Jamahiriya (1962); United Arab Emirates (1967); Algeria (1969); Nigeria (1971); Ecuador (1973) – suspended its membership from December 1992-October 2007; Angola (2007) and Gabon (1975–1994). OPEC had its headquarters in Geneva, Switzerland, in the first five years of its existence. This was moved to Vienna, Austria, on September 1, 1965.

OPEC's objective is to co-ordinate and unify petroleum policies among Member Countries, in order to secure fair and stable prices for petroleum producers; an efficient, economic and regular supply of petroleum to consuming nations; and a fair return on capital to those investing in the industry.

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These were OPEC’s formative years, with the Organization, which had started life as a group of five oil-producing, developing countries, seeking to assert its Member Countries’ legitimate rights in an international oil market dominated by the ‘Seven Sisters’ multinational companies. Activities were generally of a low-profile nature, as OPEC set out its objectives, established its Secretariat, which moved from Geneva to Vienna in 1965, adopted resolutions and engaged in negotiations with the companies. Membership grew to ten during the decade.

OPEC rose to international prominence during this decade, as its Member Countries took control of their domestic petroleum industries and acquired a major say in the pricing of crude oil on world markets. There were two oil pricing crises, triggered by the Arab oil embargo in 1973 and the outbreak of the Iranian Revolution in 1979, but fed by fundamental imbalances in the market; both resulted in oil prices rising steeply. The first Summit of OPEC Sovereigns and Heads of State was held in Algiers in March 1975. OPEC acquired its 11th Member, Nigeria, in 1971.

Prices peaked at the beginning of the decade, before beginning a dramatic decline, which culminated in a collapse in 1986 — the third oil pricing crisis. Prices rallied in the final years of the decade, without approaching the high levels of the early-1980s, as awareness grew of the need for joint action among oil producers if market stability with reasonable prices was to be achieved in the future. Environmental issues began to appear on the international agenda.

A fourth pricing crisis was averted at the beginning of the decade, on the outbreak of hostilities in the Middle East, when a sudden steep rise in prices on panic-stricken markets was moderated by output increases from OPEC Members. Prices then remained relatively stable until 1998, when there was a collapse, in the wake of the economic downturn in South-East Asia. Collective action by OPEC and some leading non-OPEC producers brought about a recovery. As the decade ended, there was a spate of mega-mergers among the major international oil companies in an industry that was experiencing major technological advances. For most of the 1990s, the ongoing international climate change negotiations threatened heavy decreases in future oil demand.