Comprehensive guide to Greenhouse Gas Emissions Regulation cases, courts, and legal analysis.
Texas Commission on Environmental Quality v. Ken Paxton, Attorney General of Texas, and Sierra Club, decided by Texas Supreme Court on April 17, 2026, resulted in a plaintiff win outcome. This case co...
Lucas Cnty. Bd. of Comm'rs v. EPA, decided by Sixth Circuit on March 9, 2026, resulted in a mixed outcome. The Sixth Circuit reviewed the Environmental Protection Agency's (EPA) decision to approve Oh...
Climate United Fund v. Citibank, N.A.; EPA, decided by D.C. Circuit on December 17, 2025, resulted in a defendant win outcome. The D.C. Circuit reviewed the EPA's denial of a petition to regulate gree...
Environmental Democracy Project v. Rael, decided by California Court of Appeal on November 26, 2025, resulted in a defendant win outcome. The Environmental Democracy Project (EDP) sued the California ...
SSM Litigation Group v. EPA, decided by D.C. Circuit on September 5, 2025, resulted in a remanded outcome. The D.C. Circuit reviewed the EPA's denial of a petition to regulate per- and polyfluoroalkyl...
Donald Johnson v. United States Congress, decided by Eleventh Circuit on August 19, 2025, resulted in a plaintiff win outcome. The Eleventh Circuit addressed whether the "major questions doctrine" app...
Clean Air Council v. Commonwealth, decided by Pennsylvania Supreme Court on August 4, 2025, resulted in a defendant win outcome. The Clean Air Council challenged the Pennsylvania Department of Environ...
Climate United Fund v. Citibank, N.A.; EPA, decided by D.C. Circuit on April 28, 2025, resulted in a defendant win outcome. The D.C. Circuit reviewed the EPA's denial of a petition to regulate greenho...
City & County of San Francisco v. Usepa, decided by Ninth Circuit on April 28, 2025, resulted in a defendant win outcome. The Ninth Circuit affirmed the district court's denial of a preliminary injunc...
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