In recent decades the electric power industry has been through many changes such as privatization and the electricity market establishment. The electricity market of Iran has started in 2003.
The main targets of restructuring and privatization of the electric power industry is:

• Creating competitive market in electric power generation and transmission.
• Facilitation of investment for private sector in the power industry.
• Increase in economic efficiency.

The electricity market of Iran is expanded to various items such as electricity supply and demand, available capacity, energy transmission services, frequency control, reactive power and so on.
The Electricity Market Information System (EMIS) contains the information processes of this market such as bidding, unit commitment, buyers demand, bills of sellers, buyers and transmission service providers.
Governmental organizations, power plants, regional electric companies, electricity distribution companies and private companies use this system in a daily manner.