The number of electricity meters nationwide has reached 35.5 million with 3.5 million new consumers having joined the national grid since 2015.
According to ISNA, household, agriculture, and industrial sectors account for 28.5 million, 436,000 and 242,000 consumers respectively. The rest are public and commercial companies.
Close to 650,000 new subscribers have been added to the number of users since March, indicating a 3.1% rise compared to the same period last year.
The news agency put electricity supply at 137 billion kilowatt-hours in the past eight months, of which 34.4% went to households.
Industries, agriculture and commercial sectors used 42 billion kWh, 22 billion kWh and 12 billion kWh respectively in the same period. The rest was consumed by state and public organizations.
Tehranis use 10% of the total power -- 21 billion kilowatt-hours.
Households consume the lion's share of power at 34.4%. Iran's installed electricity production capacity is 80 gigawatts.
Noting that the highest consumption in the last fiscal year was about 4,700 megawatts in Tehran, Hossein Sabouri, the chief executive officer of Tehran Province Electricity Distribution Company, said due to the 120,000 new consumers in the capital peak power load is forecast to exceed 5,500 MW next year.
National electricity demand is expected to cross 58,000 MW next summer. Iran's power demand hit a historic high of 55,400 MW in July, up from about 53,000 MW in fiscal March 2016-17.
According to Sabouri, there are 4.5 million power consumers in the rapidly expanding capital, which is 15% of the total electricity consumers.
Tehranis use 10% of the total power -- 21 billion kWh, he said.
The capital’s power network has a length of 32,000 kilometers and 20% of the infrastructure is dilapidated, he said.