Federal Power Commission v. Union Electric Co.

381 U.S. 90 · Decided May 3, 1965 · Supreme Court of the United States

At a glance

Federal Power Commission v. Union Electric Co. was decided on May 3, 1965 by a vote of 6–3. The Court reversed the lower court's decision. Justice Byron R. White wrote the opinion of the Court. SCDB classifies its main issue as “Electric power regulation” in the Economic Activity area.

Read the opinion

• CourtListener (Free Law Project) — opinion text
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Case details

How the Justices voted

Full case caption

Federal Power Commission v. Union Electric Co.

SCDB identifiers: case 1964-100, docket 1964-100-01.

Related decisions

Other cases on “Electric power regulation”

• Federal Power Commission v. Southern California Edison Co.
  376 U.S. 205Decided March 2, 19649–0William J. Brennan Jr.
• Federal Power Commission v. Tuscarora Indian Nation
  362 U.S. 99Decided March 7, 19606–3Charles E. Whittaker
• Atlantic City Electric Co. v. United States
  400 U.S. 73Decided December 8, 19704–4
• Gainesville Utilities Department v. Florida Power Corp.
  402 U.S. 515Decided May 24, 19718–0William J. Brennan Jr.
• Federal Power Commission v. Florida Power & Light Co.
  404 U.S. 453Decided January 12, 19724–2Byron R. White
• Gulf States Utilities Co. v. Federal Power Commission
  411 U.S. 747Decided May 14, 19736–3Harry A. Blackmun

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Cases on the same legal provision: Federal Power Act

• Udall v. Federal Power Commission
  387 U.S. 428Decided June 5, 19676–2William O. Douglas
• City of Tacoma v. Taxpayers of Tacoma
  357 U.S. 320Decided June 23, 19589–0Charles E. Whittaker
• Otter Tail Power Co. v. United States
  410 U.S. 366Decided February 22, 19734–3William O. Douglas
• Federal Power Commission v. Oregon
  349 U.S. 435Decided June 6, 19557–1Harold H. Burton
• National Association for the Advancement of Colored People v. Federal Power Commission
  425 U.S. 662Decided May 19, 19768–0Potter Stewart
• United States v. Public Utilities Commission of California
  345 U.S. 295Decided April 6, 19538–0Stanley F. Reed

Same Term, same area (Economic Activity)

• Brulotte v. Thys Co.
  379 U.S. 29Decided November 16, 19648–1William O. Douglas
• Gillespie v. United States Steel Corp.
  379 U.S. 148Decided December 7, 19648–1Hugo L. Black
• King v. United States
  379 U.S. 329Decided December 14, 19647–2John M. Harlan II
• California v. Lo-Vaca Gathering Co.
  379 U.S. 366Decided January 18, 19657–1William O. Douglas
• City of El Paso v. Simmons
  379 U.S. 497Decided January 18, 19658–1Byron R. White
• Securities and Exchange Commission v. American Trailer Rentals Co.
  379 U.S. 594Decided January 18, 19659–0Arthur J. Goldberg

See all

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