Earlier this month, the U.S. District Court for the Northern District of New York denied a motion by several environmental organizations seeking to intervene in a multistate constitutional challenge to New York’s Climate Change Superfund Act (“CCSA” or the “Act”) – a landmark 2024 statute designed to recover climate adaptation costs from major fossil fuel producers. The statute (N.Y. Env’t Conservation Law §§ 76-0101, et seq.) has drawn national attention as one of the more aggressive state-level attempts to assign financial responsibility for climate impacts.  For background on the CCSA, see my special alert post. Read More »

Share | Email| Comments|  Topics: Air, Climate Change, Greenhouse Gas, Intervention, Legislation, New York, Oil and Gas, Second Circuit, Standing

On October 3, 2025 a three judge panel for the Second Circuit ruled that Exxon Mobil Corporation, BP P.L.C., Shell Oil Company, and the American Petroleum Institute (“API”) must pay New York City (“the City”)’s attorneys’ fees and costs for advancing “absurd” arguments in opposing the City’s motion to remand to state court its suit for deceptive practices connected to climate change. City of New York v. Exxon Mobil Corp., No. 24-1568-CV (2d Cir. Oct. 3, 2025). This decision demonstrates that while parties may, at times, find success in advancing arguments that have been rejected by other courts, there are risks to advancing such arguments, including the risk of sanctions. Read More »

Share | Email| Comments|  Topics: Air, Climate Change, Greenhouse Gas, New York, Oil and Gas, Removal, Second Circuit

On June 20, 2025, the Supreme Court issued it opinion in Diamond Alternative Energy v. EPA, holding fuel producers had standing—and had specifically demonstrated redressability—to challenge California-specific regulations EPA approved under the Clean Air Act.  The Court’s opinion  reversing and remanding to the D.C. Circuit left the merits of the case for another day, but acknowledged that the regulations at issue may be rescinded shortly, mooting most, if not all, of the parties’ controversy. Read More »

Share | Email| Comments|  Topics: Agency Action, Air, California, Clean Air Act, Climate Change, D.C. Circuit, Emissions, EPA, Federal Procedure, Greenhouse Gas, Legislation, Oil and Gas, Standing, Supreme Court, United States Supreme Court

In March 2024, the County of Bucks filed a controversial suit under state law against a number of large oil companies alleging the County was injured because of the companies’ deceptive conduct with respect to their impact on climate change. The Defendants filed various preliminary objections including lack of subject-matter jurisdiction, arguing that despite the County’s effort to focus the complaint on fraudulent practices, the case at bottom alleged harm from severe weather allegedly due to air emissions, which are governed exclusively by federal law. On May 16, 2025, the Bucks County Court of Common Pleas issued an opinion agreeing with the Defendants and dismissing the case entirely.  See Bucks County v. BP P.L.C., et al., No. 2024-01836 (Bucks Cty. Com. Pl. May 16, 2025). Read More »

Share | Email| Comments|  Topics: Clean Air Act, Climate Change, Pennsylvania, Preemption, Standing

On April 3^rd, the U.S. District Court of Colorado vacated the U.S. Army Corps of Engineers’ (“USACE”) Record of Decision, Final Environmental Impact Statement, and approval of a dredge-and-fill permit for Denver Water’s expansion project of the Gross Dam and Reservoir in Colorado and remanded the matter back to the agency.  The Court temporarily enjoined Denver Water from continuing construction on the dam pending a hearing on what is “reasonable and necessary” to ensure that the dam will be structurally safe and issued a permanent injunction prohibiting the enlargement of the Gross Reservoir. Read More »

Share | Email| Comments|  Topics: Administrative Procedures Act, Agency Action, Army Corps, Clean Water Act, Climate Change, Colorado, Injunction, NEPA, Permits, Water

In a decision on February 5, 2025, the Superior Court of New Jersey dismissed the Attorney General of New Jersey’s state tort claims against various energy companies seeking redress for the effects of climate change in Platkin v. Exxon Mobil Corp (N.J. Super. No. MER-L-001797-22).  Because the dispute concerned interstate and global air emissions, which implicate uniquely federal interests, the court concluded that the federal Constitutional structure requires that federal common law preempts these climate-change related tort claims.   Read More »

Share | Email| Comments|  Topics: Air, Clean Air Act, Climate Change, Energy, New Jersey, NJDEP, Toxic Torts

In an opinion published on December 18, 2024, the Montana Supreme Court found that a provision in the Montana Constitution providing for the right to a “clean and healthful environment” guarantees the right to a stable climate system.  In Held v. State of Montana, 2024 MT 312 (Mont. 2024), the Montana Supreme Court affirmed a trial court decision striking down state law provisions that barred state agencies from considering greenhouse gas (“GHG”) emissions in permitting decisions, finding the law violates the environmental rights guaranteed by the Montana Constitution. Read More »

Share | Email| Comments|  Topics: Air, Citizens Suit, Clean Air Act, Climate Change, Greenhouse Gas, Montana

On October 29, 2024 in Dawson v. Murphy, et al., the New Jersey Superior Court Appellate Division affirmed the trial court’s order denying Plaintiffs leave to amend their complaint to assert a claim that New Jersey’s investment of state pension funds into oil and gas companies which allegedly harm the environment constitutes a violation of plaintiffs’ rights under the New Jersey Civil Rights Act (“NJCRA”).  No. A-3083-22, 2024 WL 4601708 (N.J. Super. App. Div. Oct. 29, 2024).  In an unpublished opinion, the Court held that that the New Jersey Constitution does not guarantee a right to a stable environment and therefore the state’s investments did not violate Plaintiffs’ constitutional rights.  Read More »

Share | Email| Comments|  Topics: Citizen Suit, Climate Change, Environmental Justice, Greenhouse Gas, New Jersey, New Jersey Civil Rights Act, Oil and Gas, Public Trust Doctrine

In California Restaurant Association v. City of Berkeley, 89 F. 4th 1094 (9th Cir. 2024), the Ninth Circuit was tasked with determining whether the City of Berkeley’s attempt to prohibit the use of natural gas pipelines in new buildings through a local ordinance conflicted with the federal Energy Policy and Conservation Act (“EPCA”), 42 U.S.C. § 6297(c).  That statute expressly preempts state and local governments from enacting regulations restricting energy use of many natural gas appliances, including those used in household and restaurant kitchens.  After evaluating the parties’ arguments, the court concluded that the ordinance is preempted by the EPCA based on the text, structure, and context of that statute.  Read More »

Share | Email| Comments|  Topics: Climate Change, Natural Gas, Preemption

On November 1st, 2023, in a split 4-1 opinion with a dissent, the Pennsylvania Commonwealth Court held that Pennsylvania cannot participate in the Regional Greenhouse Gas Initiative (“RGGI”) because the regulations intended to implement RGGI pursuant to the Air Pollution Control Act (“APCA”) constitute an impermissible tax rather than a fee. Bowfin KeyCon Holdings, LLC vs. Pa. Dep’t of Env’t Prot. and Pa. Env’t Quality Bd., 2023 WL 7171547, at *1 (Pa. Commw. Ct. Nov. 1, 2023). The holding halts former Governor Tom Wolf’s efforts to make Pennsylvania the first major fossil-fuel producing state to implement a price on carbon emissions.     Read More »

Share | Email| Comments|  Topics: Air, Climate Change, Commonwealth Court, Pennsylvania, Pennsylvania Department of Environmental Protection, Taxes