Suncor Energy Inc. v. County Commissioners of Boulder County

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Supreme Court of the United States
Suncor Energy Inc. v. County Commissioners of Boulder County
Docket number: 25-170
Term: 2026
Court: United States Supreme Court
Important dates
Pending
Court membership
Chief Justice John Roberts • Clarence Thomas • Samuel Alito • Sonia Sotomayor • Elena Kagan • Neil Gorsuch • Brett Kavanaugh • Amy Coney Barrett • Ketanji Brown Jackson

Suncor Energy Inc. v. County Commissioners of Boulder County is a case scheduled for argument before the Supreme Court of the United States during the court's October 2026-2027 term.

HIGHLIGHTS
  • The questions presented: "1. Whether federal law precludes state-law claims seeking relief for injuries allegedly caused by the effects of interstate and international greenhouse-gas emissions on the global climate.

    2. Whether this court has statutory and Article III jurisdiction to hear this case."[1]

  • The outcome: The appeal is pending adjudication before the U.S. Supreme Court.


    • The case came on a writ of certiorari to the Colorado Supreme Court. To review the lower court's opinion, click here.

    Background

    Timeline

    The following timeline details key events in this case:

    • February 23, 2026: The U.S. Supreme Court agreed to hear the case.
    • August 8, 2025: Suncor Energy (U.S.A.) Inc., et al. appealed to the U.S. Supreme Court.
    • August 8, 2025: The Colorado Supreme Court ruled that state law is not superseded by federal law, and that Boulder County has the standing to bring this case. The court did not rule on the merits of the case.

    Questions presented

    The petitioner presented the following questions to the court:[1]

    Questions presented:
    “ 1. Whether federal law precludes state-law claims seeking relief for injuries allegedly caused by the effects of interstate and international greenhouse-gas emissions on the global climate.

    2. Whether this court has statutory and Article III jurisdiction to hear this case.[2]

    		”

    Oral argument

    Audio

    Audio of the case will be posted here when it is made available.

    Transcript

    A transcript of the case will be posted here when it is made available.

    Outcome

    The case is pending adjudication before the U.S. Supreme Court.

    October term 2026-2027

    See also: Supreme Court cases, October term 2026-2027

    The Supreme Court will begin hearing cases for the term on October 5, 2026. The court's yearly term begins on the first Monday in October and lasts until the first Monday in October the following year. The court generally releases the majority of its decisions by mid-June.[3]


    See also

    External links

    Footnotes

    1. ↑ 1.0 1.1 Supreme Court of the United States, "25-170 SUNCOR ENERGY INC. V. COUNTY COMMISSIONERS OF BOULDER COUNTY QP", February 23, 2026
    2. ↑ Note: This text is quoted verbatim from the original source. Any inconsistencies are attributable to the original source.
    3. ↑ SupremeCourt.gov, "The Supreme Court at Work: The Term and Caseload," accessed January 24, 2022
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