A growing group of Republicans and business leaders is rallying behind an unlikely cause. They want to protect Biden-era tax credits for wind, solar and other clean energy.

President Trump has made dismantling federal efforts to address climate change a signature part of his agenda, eliminating environmental regulations, withholding congressionally approved funding, firing workers, halting permitting for wind energy developments and fast-tracking fossil fuel projects.

But the clean energy tax credits, which were signed into law by President Joseph R. Biden Jr. in 2022 as part of the Inflation Reduction Act, have helped spur a boom in manufacturing investment in the United States, especially in Republican districts.

Now, as Mr. Trump pushes Congress to slash federal spending to pay for broad tax cuts, some House Republicans from districts that got billions of dollars in investment from the tax credits have begun a campaign to keep them.

The Republicans are making the case that supporting renewable energy is squarely in line with Mr. Trump’s “energy dominance” agenda, despite the president’s rallying against what he calls the “green new scam.”

Last week, a group of 21 House Republicans wrote a letter to Representative Jason Smith of Missouri, the chairman of the Ways and Means Committee, asking him to preserve the credits. And in recent weeks, several groups of conservative environmentalists and business leaders have traveled to Capitol Hill to lobby members of Congress on the issue.