Biden signs international climate deal on refrigerants

WASHINGTON (AP) — President Joe Biden on Thursday signed an international agreement that compels the United States and other countries to limit use of hydrofluorocarbons, highly potent greenhouse gases commonly used in refrigeration and air conditioning that are far more powerful than carbon dioxide.

The Senate ratified the so-called Kigali Amendment to the 1987 Montreal Protocol on ozone pollution last month in a rare bipartisan vote. The measure requires participating nations to phase down production and use of hydrofluorocarbons, also known as HFCs, by 85% over the next 14 years, as part of a global phaseout intended to slow climate change.

HFCs are considered a major driver of global warming. Nearly 200 nations reached a deal in 2016 in Kigali, Rwanda, to limit HFCs and find substitutes more friendly to the atmosphere. More than 130 nations, including China, India and Russia, have formally ratified the agreement, which scientists say could help the world avoid a half-degree Celsius of global warming.

Biden pledged to embrace the Kigali deal during the 2020 presidential campaign and submitted the agreement to the Senate last year. In a related action, the Environmental Protection Agency has issued a rule limiting U.S. production and use of HFCs in line with the Kigali agreement. The EPA rule followed a 2020 law passed by Congress authorizing a 15-year phaseout of HFCs in the U.S.

White House climate adviser Ali Zaidi said formal ratification of the Kigali agreement — with Biden's signature — “means the U.S. is all-in on reducing HFCs” and advancing global efforts to combat climate change.

The agreement should lead to tens of thousands of new jobs and billions of dollars in exports as clean technologies are developed to replace HFCs around the world, Zaidi said.

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