The participating countries include Germany, China, Turkey, Italy, Spain, Finland, Poland, Britain, Sweden, UAE and Russia.
Energy Minister Reza Ardekanian is to inaugurate the four-day exhibition in Tehran International Permanent Fairground on Saturday.
Companies engaged in various fields of power industry such wire, cable, electricity equipment and automation are attending the event.
Experts will discuss economy of electricity as well as challenges of the industry in the field of export within two specialized meetings on the sidelines.
Some 54 power plants have been operational since the 11th government came to power in 2013 and the capacities of the power plants across the country has increased by eight megawatts to 77,000 megawatts during the period.
Energy Ministry has taken into account 'transforming Iran into a strategic regional power center' as its prospects and is currently mulling to promote extraterritorial swaps with Russia, Tajikistan and countries in southern Persian Gulf.
Iran is currently engaged in electricity swaps with Armenia, Azerbaijan Republic, Turkey, Pakistan, Afghanistan, Turkmenistan, Iraq and Nakhichevan, from among which it only exports energy to Iraq, Pakistan and Afghanistan.
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