
New York Proposes Mandatory Greenhouse Gas Reporting Rule
Last month, the New York State Department of Environmental Conservation (DEC) announced that it is considering a rule that would subject certain greenhouse gas (GHG) emissions sources to a mandatory reporting rule. This proposed rule aims to collect comprehensive emissions data from large GHG emitters across the state. Although the rule only proposes to impose reporting requirements, DEC has announced plans to use the information obtained to develop further strategies to reduce GHG emissions and direct investments to renewable energy alternatives.
SEC Ends Defense of Climate-Related Disclosure Rules
On March 27, 2025, the U.S. Securities and Exchange Commission (SEC) announced that it had voted to end its defense of the final rules on the enhancement and standardization of climate-related disclosures for investors (the climate rules). This decision follows significant opposition to the climate rules from congressional leaders, trade associations, state attorneys general, and other business entities. (more…)

President Trump’s Executive Order Seeks to Reduce Federal Regulation
President Trump’s January 31, 2025, Executive Order (EO) titled “Unleashing Prosperity Through Deregulation,” is a part of the new Administration’s broader policy to reduce federal regulation. The EO finds that federal regulations impose significant costs and complexities on American citizens and businesses that hinder economic growth, innovation, and global competitiveness – and it is the Administration’s policy to alleviate these burdens. This marks a policy change from the approach of the prior administration and is a broader effort than the regulatory reforms of the first Trump Administration.
States, Advanced Reactor Developer Challenge NRC’s Authority to License Advanced Reactors
The outcome of a lawsuit filed at the end of 2024 challenging the U.S. Nuclear Regulatory Commission’s (“NRC’s or the Agency’s”) authority under a 1956 rule to license certain nuclear facilities could have important implications for advanced reactor licensing processes and the supply of electricity in the U.S. in the years ahead.

U.S. EPA Removes Regulatory Affirmative Defense Provision Against Alleged Violations of Oil and Gas Facility NESHAPs
On October 22, 2024, the U.S. Environmental Protection Agency (EPA) published a final rule removing an affirmative defense from Clean Air Act (CAA) National Emission Standards for Hazardous Air Pollutants (NESHAP) regulations for the Oil and Natural Gas Production Facility and Natural Gas Transmission and Storage Facility Source Categories (Final Rule).[1] Prior to the Final Rule, owners or operators could assert an affirmative defense that alleged NESHAP standard violations were caused by an equipment malfunction.[2] A “malfunction” is defined as any sudden, infrequent, and not reasonably preventable failure of air pollution control and monitoring equipment, process equipment, or a process to operate in a normal or usual manner.[3]

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).

U.S. Fish and Wildlife Service Finalizes Changes to Voluntary Endangered Species Act Programs and Related Permitting Process
On Friday, April 12, 2024, the U.S. Fish and Wildlife Service (the Service) issued a Final Rule making changes to 50 CFR part 13 to clarify and expedite the process for issuing enhancement of survival permits and incidental take permits pursuant to Section 10(a)(1)(A) and (B), respectively, of the Endangered Species Act. The regulatory changes are intended to provide the Service greater flexibility in implementing the permitting process and generate greater conservation results by encouraging additional engagement in voluntary programs associated with these permits, including safe harbor agreements (SHAs), candidate conservation agreements with assurances (CCAAs), and habitat conservation plans (HCPs).
SEC Finalizes Climate-Related Disclosure Rules Ushering in a New Era of Public Company Climate Reporting
On March 6, 2024, the U.S. Securities and Exchange Commission (SEC) adopted final rules that will require domestic and foreign registrants to include extensive climate-related information in their registration statements and periodic reports.
U.S. Army Corps of Engineers Proposes Broader Historic Preservation Review
On February 9, 2024, the U.S. Army Corps of Engineers (Corps) published a proposed rule that would amend the Corps permitting regulations to follow the National Historic Preservation Act (NHPA) implementing regulations as developed interpreted by the Advisory Council on Historic Preservation (ACHP). Specifically, the Corps proposes removing its own NHPA regulations, Appendix C from 33 CFR part 325, and replacing them with those promulgated by the ACHP at 36 CFR part 800. This change may lengthen the regulatory review process and expand the scope of the Corps’ NHPA review.
U.S. EPA Bans Hydrofluorocarbons in Refrigeration, Air Conditioning, and Heating Products
On October 5, 2023, the U.S. Environmental Protection Agency (EPA) issued a final rule restricting the use of hydrofluorocarbons (HFCs) in new aerosol, foam, and refrigeration, air conditioning, and heat pump (RACHP) products and equipment. The rulemaking is part of the phasedown of HFCs under the American Innovation and Manufacturing Act of 2020. The final rule also establishes a process to submit technology transition petitions to restrict the use of HFCs in industry sectors in which they are used.