A monopoly is evident where a firm is the sole seller of its product and if its product does not have close substitutes, as discussed in (Gans J., King S. Mankiw A. 2003). This essay will discuss the monopoly of petroleum by The Organization Of Petroleum Exporting Countries (OPEC), particularly how it controls the price of petrol, threats to its monopoly and the social costs involved.

OPEC was established in the 1960's and ever since, Saudi Arabia gained a reputation of being the major power of the organization. Saudi Arabia has the biggest oil reserves in the world and production costs lower than any country. (economist.com 2003)This means that it is a natural monopoly and economies of scale arises; when the long run average total cost falls as the quantity of output increases as illustrated in figure 1. (Gans, J. King, S., Mankiw, N., 2003) Saudi Arabia is the undisputed...