Explore 9 court opinions on Greenhouse Gas Emissions Regulation. AI-powered plain English summaries, key holdings, and legal analysis.
9 recent cases analyzed in this topic area.
TCEQ must apply BACT to greenhouse gas emissions for major source permits.
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...
Court Vacates EPA Approval of Ohio's Greenhouse Gas Plan
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...
D.C. Circuit Affirms EPA's Denial of Aircraft Greenhouse Gas Regulation Petition
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...
CARB's Climate Change Scoping Plan Not a CEQA 'Project,' Court Rules
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 ...
D.C. Circuit Vacates EPA's Denial of PFAS Regulation Petition
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...
Eleventh Circuit Upholds EPA's Authority to Regulate Greenhouse Gases
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...
Court Affirms DEP Permit Approval for Mariner East Pipeline
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...
Court Upholds EPA's Denial of Aircraft Greenhouse Gas Regulation Petition
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...
Ninth Circuit Denies San Francisco's Bid to Block EPA Stormwater Actions
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...