Diamond Alternative Energy, LLC v. EPA

Decided June 20, 2025. Brett M. Kavanaugh delivered the opinion of the Court.

Docket 24-7 · 606 U.S. 100 (2025) · Cited 15 times

Holding

The fuel producers have Article III standing to challenge EPA’s approval under the Clean Air Act of California regulations requiring automakers to manufacture more electric vehicles and fewer gasoline-powered vehicles.

The Court’s statement of the holding, from the opinion’s syllabus. The syllabus is prepared by the Reporter of Decisions and is not part of the opinion of the Court. Read the official opinion for authority.

How the Justices voted

Decided 7–2.

“Concurring” means agreeing with the outcome; any split shown is the Court’s judgment, not each Justice’s reasoning. The lineup is the syllabus’s disposition of who wrote and joined each opinion. Source: the opinion’s syllabus (supremecourt.gov).

Precedents cited

Supreme Court decisions this opinion relies on, ordered by how often it cites each. Cases in our collection link through; others are named.

• FDA v. Alliance for Hippocratic Medicine · 602 U.S. 367 (2024)
• Allen v. Wright · 468 U.S. 737 (1984)
• Warth v. Seldin · 422 U.S. 490 (1975)
• TransUnion LLC v. Ramirez · 594 U.S. 413 (2021)
• Lujan v. Defenders of Wildlife · 504 U.S. 555 (1992)
• Department of Commerce v. New York · 588 U.S. 752 (2019)
• United States v. Texas · 599 U.S. 670 (2023)
• Bennett v. Spear · 520 U.S. 154 (1997)
• California v. Texas · 593 U.S. 659 (2021)
• Clapper v. Amnesty International USA · 568 U.S. 398 (2013)
• Columbia Broadcasting System, Inc. v. United States · 316 U.S. 407 (1942)
• Thole v. U. S. Bank N. A. · 590 U.S. 538 (2020)
• Murthy v. Missouri · 603 U.S. 43 (2024)
• Haaland v. Brackeen · 599 U.S. 255 (2023)
• Valley Forge Christian College v. Americans United for Separation of Church and State, Inc. · 454 U.S. 464 (1982)
• Whitmore Ex Rel. Simmons v. Arkansas · 495 U.S. 149 (1990)
• United States v. Detroit Timber & Lumber Co. · 200 U.S. 321 (1906)
• Uzuegbunam v. Preczewski · 592 U.S. 279 (2021)
• Lawrence Ex Rel. Lawrence v. Chater · 516 U.S. 163 (1996)
• Reed v. Goertz · 598 U.S. 230 (2023)
• E.M.D. Sales, Inc. v. Carrera · 604 U.S. 45 (2025)

Cited by

Later Supreme Court opinions in our collection that cite this case.

• Stanley v. City of Sanford · 606 U.S. 46 (2025)

Official text

Read the official opinion (PDF, supremecourt.gov)

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Source: Supreme Court of the United States, slip opinions (2025). Citation count from the Free Law Project’s CourtListener bulk data. Data last verified 2026-08-15. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).