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Federal Energy Regulatory Commission v. Mississippi

456 U.S. 742 · Decided June 1, 1982 · Supreme Court of the United States

Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.

At a glance

Federal Energy Regulatory Commission v. Mississippi was decided on June 1, 1982 by a vote of 5–4. The Court reversed the lower court's decision. Justice Harry A. Blackmun wrote the opinion of the Court. SCDB classifies its main issue as “National supremacy, public utilities” in the Federalism area.

Read the opinion

Case details

Citations
456 U.S. 742 · 102 S. Ct. 2126 · 72 L. Ed. 2d 532 · 1982 U.S. LEXIS 38
Docket number
80-1749
Decided
June 1, 1982
Argued
January 19, 1982
Court era
Burger Court
Decision type
Opinion of the Court (orally argued)
Disposition
Reversed
Outcome for petitioner
The petitioning party received a favorable disposition
Vote
5–4
Majority opinion
Harry A. Blackmun
Opinion assigned by
William J. Brennan Jr.
How the case arrived
Appeal
Issue area
Federalism
Legal provision
Tenth Amendment
Type of law
Constitutional amendment
Decision direction (SCDB)
Liberal what this means

How the Justices voted

Full case caption

Federal Energy Regulatory Commission et al. v. Mississippi et al.

SCDB identifiers: case 1981-102, docket 1981-102-01.

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Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error