On December 1, 2025, the Department of Environmental Conservation (DEC) announced that it finalized regulations establishing a Mandatory Greenhouse Gas Reporting Program.
DEC Finalizes Mandatory Greenhouse Gas Reporting Program Regulations
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Ninth Circuit Pauses Looming California SB 261 Compliance Deadline; CARB Clarifies Related Guidance
On Nov. 18, 2026, the United States Court of Appeals for the Ninth Circuit issued a preliminary injunction enjoining the enforcement of California’s SB 261, which had an initial compliance deadline of Jan. 1, 2026. The same day, the California Air Resource Board (CARB) issued updated guidance concerning its rule-making efforts for both SB
Wildlife Agencies Issue Four Proposed Rules to Revert Endangered Species Act Practices to 2019 Interpretations
On Nov. 21, 2025, the U.S. Fish and Wildlife Service (FWS) released four proposed rules to revise its Endangered Species Act (ESA) implementing regulations, all of which would apply only prospectively. 90 Fed. Reg. 52587, 52592, 52600, 52607. FWS crafted two of the proposed rules jointly with the National Marine Fisheries Service (NMFS), the agency
Decree Establishes Administrative Facilities for the Regularization of Concession and Assignment Titles of National Waters in Mexico
On Oct. 28, 2025, Mexico’s Head of the Executive Power, Claudia Sheinbaum, published in the Official Gazette of the Federation (DOF) the Decree establishing administrative facilities for the regularization of concession and assignment titles granted to users of national waters. In line with the National Water Plan 2024-2030, the Decree aims to establish a procedure
NYISO Reliability Plan: New York May Require Thousands of Megawatts of Dispatchable Generation by 2034
On Nov. 21, 2025, the Board of Directors of the New York Independent System Operator, Inc. (NYISO), as anticipated, approved the 2025-2034 Comprehensive Reliability Plan (CRP). This blog post highlights two aspects of the CRP that may have significant repercussions related to future electric generation and transmission planning and development. The first relates to
The Never-Ending Rule: EPA and Army Corps of Engineers Propose Narrowing the Post-Sackett Definition of ‘Waters of the United States’
On November 17, 2025, the U.S. Environmental Protection Agency (EPA) and the Army Corps of Engineers (the Corps) announced a proposed rule (PR) to revise the definition of “waters of the United States” (WOTUS) by excluding several types of waters from the definition of WOTUS in their respective regulations (40 C.F.R. § 120.2 and 33
Agency Deference and Natural Resources Damages
In a rare occurrence, two appellate courts have recently weighed in on natural resources damages (NRD) claims, providing fresh insights into this evolving area of law. The U.S. Court of Appeals for the First Circuit’s October decision in United States v. Ernst Jacob GmbH & Co. under the Oil Pollution Act, alongside a September Ninth
New California Climate Disclosure Law Deadlines Are Rapidly Approaching: Compliance Considerations for Companies
Some companies that do business in California are facing rapidly approaching compliance deadlines under California’s climate disclosure laws, SB 253 and SB 261, the first of which will occur on Jan. 1, 2026. On Nov. 10, a number of plaintiffs, led by the U.S. Chamber of Commerce, filed an Emergency Application for Injunction Pending Appeal
NYS Executive and Attorney General Come Together to Expedite and Streamline Land Acquisition
On Nov. 10, 2025, the New York State Department of Environmental Conservation (DEC) and the New York State Office of the Attorney General (OAG) entered into a memorandum of agreement (MOA) to streamline the land acquisition process in New York. This blog post provides background information regarding the existing land acquisition process and discusses the
Greenberg Traurig’s Environmental Practice Receives 97 Rankings Nationally and in 20 U.S. Markets
Global law firm Greenberg Traurig, LLP received the most Tier 1 national rankings, with 43 national rankings, and second-most metropolitan Tier 1 rankings, with 294 metro rankings, in the 2026 Best Lawyers® “Best Law Firms.”