Iran is dealing with widespread power outages because three things hit at the same time: a brutal heatwave, US military strikes that damaged power facilities, and technical failures in the electrical grid. This is according to reporting from Al Jazeera, published from Tehran on July 19, 2026. The head of Iran's national electricity company, Mohammad Allahdad, said the grid lost 4,200 megawatts of power capacity. That is a huge amount — enough to power millions of homes. He also said more than 2,000 spots across the network were damaged. In the capital and other cities, the outages have turned off digital billboards, stopped traffic lights, and forced police to direct cars by hand at busy intersections.

US strikes have directly damaged Iran's power systems. Local media cited by Al Jazeera report that a power plant on Kish Island was hit, and power networks in the southern coastal cities of Bandar Abbas, Jask, and Chabahar were badly damaged. When a journalist asked Tehran City Council Chairman Mehdi Chamran about the unannounced blackouts, he said reporters would not be asking such questions if they knew how many electrical facilities had been bombed two days earlier. His comments point to ongoing damage from the US-Israel war on Iran, which started in February 2026.

The timing could not be worse. President Masoud Pezeshkian and Energy Minister Abbas Aliabadi had promised the public a summer without power cuts, just before the war began. That promise has fallen apart under the pressure of war damage and extreme summer heat. Iran's power grid has struggled during summer for years. Reuters reported in July 2021 that Iran's president at the time apologized for blackouts during a heatwave that even led to street protests. Iran International reported on July 10, 2026, that power and water cuts had returned to several parts of the country.

The effects are visible across Tehran. Small business owners are using portable generators on sidewalks to keep food from spoiling during outages. A video that spread widely on Iranian social media showed an ice cream seller who lost 180 kilograms (400 pounds) of product because it melted when the power went out. At Sharif University of Technology, the outages knocked exam servers offline, forcing the school to postpone 38 final exams. Two students there, Kamran, 22, and Moein, 24, told Al Jazeera the disruptions had turned their daily lives upside down.

Hospitals in Tehran have been spared the worst so far by using backup generators to keep intensive care units running. But those generators run on diesel or fuel oil, and no health official has publicly said how long those fuel reserves will last or whether the generators are being maintained.

Bahman Arman, an economics professor at Tehran University and former adviser to the Ministry of Industry, Mine, and Trade, was quoted in Al Jazeera's report talking about the energy shortfall. His involvement suggests the problem is being treated not just as a wartime issue but as a deeper economic pressure that could hurt industry and trade down the line.

The broader context here is that Iran's power crisis now has three overlapping causes that have never hit at the same time before. The 2021 blackouts were caused by a heatwave. The July 10 Iran International report showed outages returning across multiple regions. The July 19 Al Jazeera report shows those outages have gotten much worse, with the war adding damage that no amount of careful power management can fix. When a grid loses 4,200 megawatts and gets damaged at more than 2,000 points, the real question is not about temporary, rotating power cuts. The question is whether the whole system can stay running at all.

Chamran's choice to blame the bombing rather than the heatwave or technical faults tells us something about how Iranian officials want the public to see this crisis. Pointing to enemy attacks serves a political purpose. But Allahdad's specific numbers about grid damage give that claim real weight. How officials balance political messaging with the actual reality on the ground will matter as the war goes on and the summer heat continues.