President Trump mocked Democrats’ Green New Deal in a campaign-style speech Saturday — and let out a bit of profanity as he raged against their plans to investigate his finances.

“The new green deal or whatever the hell they call it … I encourage it, I think it’s really something they should promote,” he told the annual Conservative Political Action Conference, known as CPAC, in National Harbor, Md.

“I’ll take the other side of that argument. No planes, no energy; when the wind stops blowing, that’s the end of your electricity,” the president said to laughs. “Darling, is the wind blowing today? I’d like to watch television.”

Last month, Rep. Alexandria Ocasio-Cortez (D-NY) and Sen. Ed Markey (D-Mass.) released an outline for the Green New Deal, a sweeping plan to reduce carbon emissions and remake the economy.

Trump opened to applause, striding up to the American flag and giving it a big embrace.

“You know I’m totally off script right now, and this is how I got elected, by being off script,” he regaled the crowd at one point.

The Green New Deal suffered his hardest broadsides.

“This is the new Democrat platform, and I don’t want to talk them out of it,” Trump said, claiming that the plan would force New York to “rip down buildings and build them again” and make Hawaiians forgo planes for boats.

He also lashed out at the two-year Russia probe by FBI special counsel Robert Mueller, and what he derided as, “the collusion delusion.”

“Unfortunately you put the wrong people in a couple of positions and they leave people for a long time that shouldn’t be there and all of a sudden they’re trying to take you out with bulls–t,” Trump said. “Now they go into, ‘Let’s go into every deal he’s ever done,’ ” he added. “These people are sick.”

Earlier in the roughly two-hour speech, he promised supporters a reelection victory.

“We’re going to do it again in 2020, and the numbers, I think, are going to be even bigger,” Trump told the whooping crowd.

The freewheeling performance featured numerous off-script riffs — including an impersonation of former Attorney General Jeff Sessions.

“I’m gonna recuse myself,” Trump drawled, dissing Sessions’ move to remove himself from the federal probe into Russian meddling in the 2016 election.

At other points in the speech, Trump directed his scorn against Democrats.

He accused them of “embracing open borders, socialism and extreme late-term abortions.” Trump also taunted the party’s presidential candidates — including Sen. Elizabeth Warren (D-Mass.), whose claims to Native American heritage he has derided by calling her “Pocahontas.”

“I should have saved the Pocahontas thing for another year,” he said. “I’ve destroyed her political career, and I won’t get a chance to run against her and I would have loved that.”

“I don’t want to knock out all of the good stuff and end up with somebody that’s actually got talent,” Trump said. “That would be bad.”

In recent years, Trump has taken CPAC’s stage to rally his base and tout his accomplishments.

Trump on Thursday returned from Vietnam, where he walked away from his second summit with North Korea’s dictator Kim Jong-un without a denuclearization deal. Trump didn’t bring up North Korea until the speech neared its end, when he addressed the fallout from his comments on the Otto Warmbier case.

“In one way, I have to negotiate,” Trump said. “In another way, I love Mr. and Mrs. Warmbier and I love Otto. And it’s a very delicate balance.”

The Warmbiers, whose son died after being imprisoned in North Korea, lashed out at Kim and at Trump’s praise of the dictator on Friday.

Trump insisted, “We made a lot of progress, and I think we will continue to make progress,” saying that North Korea “has an incredible, brilliant economic future. But they have no economic future if they have nuclear weapons.”