Supreme Court of the United States, 1977

Montana Power Co. v. United States Environmental Protection Agency

Supreme Court of the United States · Decided April 4, 1977 · Consideration, Petitions, Took

430 U.S. 953; 97 S. Ct. 1597 (United States Reports)

Cases that cite this one

3 later published cases cite this decision. The 2 that cite it most often are listed here.

Citizens to Save Spencer County v. United States Environmental Protection Agency (D.C. Cir. 1979)
Utah Power & Light Company v. Environmental Protection Agency (D.C. Cir. 1977)

This list shows which later cases cite this one. It does not say how they treated it, and no review of that has been done. Not a substitute for Shepard’s or KeyCite — verify before relying.

Opinion of the Court

C. A. D. C. Cir. Certiorari granted limited to the following questions:

1. Whether regulations promulgated by the Environmental *954Protection Agency to prevent the significant deterioration of air quality are authorized by the Clean Air Act;

2. Whether the Clean Air Act permits the Environmental Protection Agency to adopt regulations which grant to federal land managers and Indian governing bodies power to reclassify federal and Indian lands within their jurisdiction. Cases consolidated and a total of one and one-half hours allotted for oral argument.

Mr. Justice Powell took no part in the consideration or decision of these petitions.

Reported below: 176 U. S. App. D. C. 335, 540 F. 2d 1114.

Case-law data current through December 31, 2025. Source: CourtListener bulk data.