Prime Minister Rishi Sunak has said he expects to discuss Joe Biden’s flagship package of investment in green industries when he meets the president during his trip to the United States.
On the plane to Washington DC, Mr Sunak said “subsidy races” were not a solution to hitting climate goals.
Some British ministers have criticised Mr Biden’s Inflation Reduction Act (IRA) as harmful to world trade.
The law includes $370bn (£297bn) to boost green technology in the US.
In a drive to cut carbon emissions, billions in tax credits and subsidies has been allocated to speed up the production of solar panels and wind turbines, and encourage the up-take of electric cars.
The European Union has described the law as anti-competitive, while earlier this year, Energy Secretary Grant Shapps said the package was “dangerous because it could slip into protectionism”.
It is expected to be one subject of discussion when Mr Sunak meets Mr Biden for the fourth time this year, for talks at the White House on Thursday, following meetings with business leaders and senior politicians.
The prime minister’s spokesman suggested Mr Sunak would also talk about boosting green tech, the war in Ukraine, and the regulation of artificial intelligence.
Downing Street said the prime minister would seek to boost economic security, bringing it into line with the level of UK-US co-operation on defence.