D.C. Circuit Upholds U.S. EPA’s HFC Cap-and-Trade Program Under AIM Act
On August 1, 2025, the U.S. Court of Appeals for the D.C. Circuit upheld the U.S. Environmental Protection Agency’s (EPA) authority under the American Innovation and Manufacturing (AIM) Act to phase down hydrofluorocarbons (HFCs) through a cap-and-trade program. In IGas Holdings, Inc. v. EPA, No. 23-1261, a unanimous panel rejected constitutional and administrative law challenges from refrigerant industry members, finding that the AIM Act provides a clear “intelligible principle” to guide EPA’s allowance allocation. The Court also held that EPA’s decision to exclude 2020 market data from its allocation methodology was not arbitrary and capricious.
Recent Developments in U.S. EPA’s Hydrofluorocarbon Phasedown
There have been several recent developments in enforcement, litigation, and regulatory implementation of the U.S. Environmental Protection Agency (EPA) phasedown of hydrofluorocarbons (HFCs).
