Entergy Corporation v. Riverkeeper, Inc.
556 U.S. 208 · Decided April 1, 2009 · 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 Corporation v. Riverkeeper, Inc. was decided on April 1, 2009 by a vote of 5–4. The Court reversed the lower court's decision and remanded the case. Justice Antonin Scalia wrote the opinion of the Court. SCDB classifies its main issue as “Electric power regulation” in the Economic Activity area.
Read the opinion
Case details
- Citations
- 556 U.S. 208 · 129 S. Ct. 1498 · 173 L. Ed. 2d 369 · 2009 U.S. LEXIS 2498
- Docket number
- 07-588
- Decided
- April 1, 2009
- Argued
- December 2, 2008
- Court era
- Roberts Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Reversed and remanded
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 5–4
- Majority opinion
- Antonin Scalia
- Opinion assigned by
- John G. Roberts Jr.
- How the case arrived
- Certiorari
- Issue (SCDB)
- Electric power regulation
- Issue area
- Economic Activity
- Legal provision
- Clean Water Act (Federal Water Pollution Control Act)
- Type of law
- Federal statute
- Decision direction (SCDB)
- Conservative what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice John Paul Stevens | Dissent | Wrote an opinion |
| Justice Antonin Scalia | Majority | Wrote an opinion |
| Justice Anthony M. Kennedy | Majority | |
| Justice David H. Souter | Dissent | |
| Justice Clarence Thomas | Majority | |
| Justice Ruth Bader Ginsburg | Dissent | |
| Justice Stephen G. Breyer | Dissent | Wrote an opinion |
| Chief Justice John G. Roberts Jr. | Majority | |
| Justice Samuel A. Alito Jr. | Majority |
Full case caption
Entergy Corporation v. Riverkeeper, Inc., et al.
SCDB identifiers: case 2008-040, docket 2008-040-01.
Related decisions
Other cases on “Electric power regulation”
- Morgan Stanley Capital Group Inc. v. Public Utility District No. 1 of Snohomish County
- NRG Power Marketing, LLC v. Maine Public Utilities Commission
- Federal Energy Regulatory Commission v. Electric Power Supply Association
- West Virginia v. Environmental Protection Agency
- Arcadia v. Ohio Power Company
- American Paper Institute, Inc. v. American Electric Power Service Corp.
Cases on the same legal provision: Clean Water Act (Federal Water Pollution Control Act)
- Coeur Alaska, Inc. v. Southeast Alaska Conservation Council
- Exxon Shipping Co. v. Baker
- National Association of Home Builders v. Defenders of Wildlife
- John A. Rapanos v. United States
- S. D. Warren Company v. Maine Board of Environmental Protection
- Chantell Sackett v. Environmental Protection Agency
Same Term, same area (Economic Activity)
- Donald C. Winter v. Natural Resources Defense Council, Inc.
- Kari E. Kennedy v. Plan Administrator for Dupont Savings and Investment Plan
- United States v. Eurodif S. A.
- Pacific Bell Telephone Company v. Linkline Communications, Inc.
- Ministry of Defense and Support for the Armed Forces of the Islamic Republic of Iran v. Dariush Elahi
- Burlington Northern and Santa Fe Railway Company v. United States
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