WASHINGTON — President Trump on Monday affirmed his Tuesday deadline for negotiations with Iran before bombing their electricity grid and other infrastructure still stands — noting he’d received a “significant” Iranian proposal to end its war that doesn’t go far enough to meet US demands.

“They have a proposal, and it’s a significant proposal,” he told reporters at the annual White House Easter Egg Roll. “[But] it’s not enough.”

Hours later, Trump said at a White House press briefing that he couldn’t “talk about a cease-fire, but I can tell you that we have an active, willing participant on the other side,” referring to the remaining leadership in Tehran.

“They would like to be able to make a deal,” he added, noting that the US also has “to have a deal that’s acceptable to me, and part of that deal is going to be we want free traffic of oil and everything else.”

The US talks with Iran — which are primarily being mediated by Pakistan — have centered on ways to reopen the Strait of Hormuz, through which roughly one-quarter of the world’s oil passes.

But just a day remains before Trump’s negotiation deadline expires — and the US could begin bombing the nation’s electricity grid and other infrastructure. 

“The entire country can be taken out in one night, and that night might be tomorrow night,” Trump told reporters at the White House.

Still, the president remained hopeful, noting that a third group of Iranian leaders with which the US is now speaking are “not as radical.”

He is also considering a proposal for a 45-day cease-fire with Iran, with the precise terms of the plan offered by mediator Pakistan still under discussion.

“This is one of many ideas, and [Trump] has not signed off on it,” a White House official told The Post. “Operation Epic Fury continues.”

Meanwhile, Tehran has rejected “various proposals” for a cease-fire with US and Israeli forces — with Iranian Foreign Ministry spokesman Esmaeil Baghaei on Monday claiming a pause in fighting would merely allow the US a chance to prepare for more attacks.

“The reason for the cease-fire is not experience, a cease-fire means creating a pause to strengthen forces for a new crime. No sane person would do this,” he said in translated remarks. “Our demands, in addition to the absence of a cease-fire and war cycle, must be met.”

There has been no evidence that US forces need a pause in fighting to “strengthen” for more strikes. Supreme Leader Ayatollah Ali Khamenei and dozens of senior Iranian military leaders and officials were killed by airstrikes earlier in the conflict.

Instead, Tehran on Monday issued a 10-point response to an American 15-point plan to end the war that Washington sent through intermediaries two weeks ago, according to Iran’s state-run IRNA news agency.

The document rejected any talk of a cease-fire, instead opting for “a permanent end to the war that respects its own considerations,” which would include lifting US sanctions on Iran, funds for reconstruction efforts, as well as developing “safe passage protocol through the Strait of Hormuz,” according to IRNA.

Baghaei said the original US plan — which reportedly called for the end of its nuclear program, limits on its ballistic missile capabilities and reopening the Strait of Hormuz was “completely unacceptable to us,” according to Iran’s state run Press TV.

He further called the proposal “highly excessive and unusual, as well as illogical,” while a regional official called it “maximalist.”

The Strait of Hormuz has been closed to most commercial vessels since US-Israeli attacks began on Feb. 28, causing oil prices to skyrocket — with the price per barrel rising from roughly $67 before the war to $112 as of Monday.

Asked what he could do about the prices at the pump, Trump gave a blunt response: “Win the war.”

“It will snap back quickly,” the president said.

Trump also said he wished he could seize Iran’s oil, but noted the American people would prefer a quick end to the war.

“Unfortunately the American people would like to see us come home,” Trump said. “If it were up to me, I’d take the oil, I’d keep the oil — it would bring plenty of money. I’d also take care of the people of Iran much better than they’ve been taken care of.”

On Sunday morning, the president posted on his Truth Social that “Tuesday will be Power Plant Day, and Bridge Day, all wrapped up in one, in Iran.”

The Islamic Revolutionary Guard Corp Navy late Sunday posted to X that “the Strait of Hormuz will never return to its former state, especially for America and Israel.”

“The Navy of the IRGC is in the process of completing the operational preparations for the #Announced_Plan of Iran’s officials for the new order in the Persian Gulf,” the IRGC-N wrote.

Iran has previously floated installing a toll to use the international waterway, which Tehran views as its sovereign territory — but Trump rejected that suggestion on Monday.

“What about us charging tolls? I’d rather do that — then let them have them,” Trump told a reporter during a White House briefing. “Why shouldn’t we? We’re the winner. We won. OK? They are militarily defeated.”

The president has repeatedly declared that he feels he’s accomplished most of his original war aims, including crippling Iran’s military and nuclear power, and last week expressed a willingness to walk away in “two to three weeks” regardless of whether a deal is reached.

Trump has also offered a concession, saying he’s also willing to leave behind deeply buried nuclear material, saying US satellites will monitor any Iranian attempt to retrieve it.