Power outages ensued in various districts on Sunday evening local time, with emergency teams dispatched to the affected areas to restore supply as quickly as possible, state broadcaster IRIB reported, citing the ministry.
Israel's military reported it had carried out fresh attacks on targets linked to Iran's leadership in Tehran. However, the military initially gave no details on the exact targets of the latest wave of strikes.
Iran says it is ready to respond to any US ground attack, accusing Washington of preparing a land assault while seeking talks, as regional powers met in Pakistan to try to bring the two sides together.
The initial discussions in Islamabad with Saudi Arabia, Turkey and Egypt focused on proposals to reopen the Strait of Hormuz to shipping, sources familiar with the matter said. More talks will be held on Monday.
Iran's effective blockade of oil and gas shipments through the strait since the US and Israel began attacking the country on February 28 is spreading economic pain around the world.
As the conflict entered its second month, Israel's military said it had launched over 140 air strikes on central and western Iran, including Tehran, over the 24 hours to Sunday evening, hitting ballistic missile launch sites and storage facilities, among other targets.
A chemical plant in southern Israel near the city of Beer Sheva was hit by a missile or missile debris as Israel fended off multiple salvos from Iran, prompting official warnings to the public to stay away due to "hazardous materials".
Another missile hit open ground near homes in Beer Sheva, located near several military bases, injuring 11 people.
The war has killed thousands of people and affected countries across the Middle East, with major aluminium plants in Bahrain and the United Arab Emirates damaged by air strikes over the weekend.
The Iranian Red Crescent Society said US and Israeli attacks on Iran had damaged or destroyed more than 100,000 civilian buildings.
In Iran alone, nearly 40,000 residential buildings and business units were hit, the humanitarian organisation said in a post on X.
The Red Crescent said around 600 schools and nearly 300 health centres had been attacked in the past four weeks.
The UAE, which has faced more Iranian missile and drone attacks than any other country, is seeking reparations from Iran for attacks on civilians and vital facilities and clear guarantees to prevent any repetition, an adviser to the president said.
Pakistan has offered to host peace talks, but the United States, Israel and Iran have set out maximalist positions to end the warfare, complicating the path to a solution.
Iran's parliament speaker Mohammad Baqer Qalibaf accused the US of sending messages about possible negotiations while at the same time planning to send in troops, adding that Tehran was ready to respond if US soldiers were deployed.
"As long as the Americans seek Iran's surrender, our response is that we will never accept humiliation," he said in a message to the nation.
Yemen's Iran-aligned Houthis joined the conflict on Saturday launching their first attacks on Israel and raising the prospect they could target and thus block a second key shipping route, the Bab el-Mandeb Strait.
Washington has dispatched thousands of Marines to the Middle East, with the first of two contingents arriving on Friday aboard an amphibious assault ship.
The Washington Post quoted US officials as saying the Pentagon was preparing for weeks of ground operations in Iran, adding that it was not yet clear if President Donald Trump would approve such plans.
Trump faces a stark choice between seeking a negotiated exit or escalating militarily that risks a protracted crisis, and would likely weigh further on his already low approval ratings.
Washington said last week it had offered a 15-point ceasefire plan, with a proposal to reopen the Strait of Hormuz and restrict Iran's nuclear program, but Tehran has rejected the list and put forward proposals of its own.
With US midterm elections due in November, the increasingly unpopular war has weighed on Trump's Republican Party.
Demonstrators took to city streets across the US on Saturday in protests against the conflict.
Trump has threatened to hit power stations and other energy infrastructure if Iran does not open the Strait of Hormuz, though he has extended a deadline by 10 days to April 6.
Meanwhile, Prime Minister Benjamin Netanyahu flagged Israel will widen its invasion of southern Lebanon as it targets the Iranian-backed Hezbollah militant group.
with dpa and AP
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