Entergy Louisiana, Inc. v. Louisiana Public Service Commission
539 U.S. 39 · Decided June 2, 2003 · 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
Entergy Louisiana, Inc. v. Louisiana Public Service Commission was decided on June 2, 2003 unanimously (9–0). The Court reversed the lower court's decision. Justice Clarence Thomas wrote the opinion of the Court. SCDB classifies its main issue as “Federal preemption of state legislation or regulation” in the Federalism area.
Read the opinion
Case details
- Citations
- 539 U.S. 39 · 123 S. Ct. 2050 · 156 L. Ed. 2d 34 · 2003 U.S. LEXIS 4278
- Docket number
- 02-299
- Decided
- June 2, 2003
- Argued
- April 28, 2003
- Court era
- Rehnquist Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Reversed
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 9–0 (unanimous)
- Majority opinion
- Clarence Thomas
- Opinion assigned by
- William H. Rehnquist
- How the case arrived
- Certiorari
- Issue area
- Federalism
- Legal provision
- Federal Power Act
- Type of law
- Federal statute
- Decision direction (SCDB)
- Liberal what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Chief Justice William H. Rehnquist | Majority | |
| Justice John Paul Stevens | Majority | |
| Justice Sandra Day O'Connor | Majority | |
| Justice Antonin Scalia | Majority | |
| Justice Anthony M. Kennedy | Majority | |
| Justice David H. Souter | Majority | |
| Justice Clarence Thomas | Majority | Wrote an opinion |
| Justice Ruth Bader Ginsburg | Majority | |
| Justice Stephen G. Breyer | Majority |
Full case caption
Entergy Louisiana, Inc. v. Louisiana Public Service Commission et al.
SCDB identifiers: case 2002-064, docket 2002-064-01.
Related decisions
Other cases on “Federal preemption of state legislation or regulation”
- American Insurance Association v. John Garamendi
- Kentucky Association of Health Plans, Inc. v. Janie A. Miller
- Jeremiah W. (Jay) Nixon v. Missouri Municipal League
- Engine Manufacturers Association and Western States Petroleum Association v. South Coast Air Quality Management District
- Rush Prudential HMO, Inc. v. Debra C. Moran
- City of Columbus v. Ours Garage and Wrecker Service, Inc.
Cases on the same legal provision: Federal Power Act
- New York v. Federal Energy Regulatory Commission
- Morgan Stanley Capital Group Inc. v. Public Utility District No. 1 of Snohomish County
- NRG Power Marketing, LLC v. Maine Public Utilities Commission
- Arcadia v. Ohio Power Company
- Federal Energy Regulatory Commission v. Electric Power Supply Association
- Hughes v. PPL Energyplus
Same Term, same area (Federalism)
- Rex R. Sprietsma v. Mercury Marine
- Kentucky Association of Health Plans, Inc. v. Janie A. Miller
- Nevada Department of Human Resources v. William Hibbs
- American Insurance Association v. John Garamendi
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