The Environmental Protection Agency issued the Clean Power Plan under Section 111(d) of the Clean Air Act to regulate carbon dioxide emissions from existing power plants. Rather than focusing only on controls that could be installed at individual plants, the rule set state emissions targets based in significant part on "generation shifting" from higher-emitting coal plants to lower-emitting natural gas and renewable sources. The rule never went into effect because it was stayed by the Supreme Court and later repealed by the Trump Administration, though the D.C. Circuit vacated the repeal. Coal-producing states and industry petitioners challenged EPA's asserted authority to adopt such a system-wide approach.
Did Section 111(d) of the Clean Air Act clearly authorize EPA to require generation shifting across the electricity sector as the basis for emissions limits on existing power plants?
Under the major questions doctrine, an agency must point to clear congressional authorization when it claims the power to decide issues of vast economic and political significance. A broadly worded or ancillary statutory provision is insufficient to support such transformative regulatory authority absent a clear statement from Congress.
No. Section 111(d) did not clearly authorize EPA to impose generation shifting as the best system of emission reduction for existing power plants, so the Clean Power Plan exceeded EPA's statutory authority.
The Court viewed the Clean Power Plan as asserting an extraordinary power to restructure the nation's electricity generation mix, a matter of great economic and political significance. Because EPA relied on a rarely used, broadly phrased provision of the Clean Air Act, the Court required clear congressional authorization and found none in Section 111(d)'s text, history, or prior use. The Court emphasized that Congress had not plainly empowered EPA to force industry-wide generation shifting, especially where such policy choices traditionally belong to Congress itself. Thus, the rule could not stand under the major questions doctrine.
Justice Kagan, joined by Justices Breyer and Sotomayor, dissented. She argued that Section 111(d)'s broad language authorized EPA to select the "best system of emission reduction," including generation shifting, and contended that the majority improperly substituted its own policy judgment for Congress's delegation to the expert agency.
The case is a leading modern statement of the major questions doctrine and significantly limits agency claims of broad regulatory power absent clear statutory authorization. It constrains EPA's ability to use older, general Clean Air Act provisions for transformative climate regulation and has implications across the administrative state. Closely related cases include Utility Air Regulatory Group v. EPA, 573 U.S. 302 (2014); FDA v. Brown & Williamson Tobacco Corp., 529 U.S. 120 (2000); and National Federation of Independent Business v. OSHA, 595 U.S. 109 (2022).
Utility Air Regulatory Group v. EPA, 573 U.S. 302 (2014) |
Abstain |
FDA v. Brown & Williamson Tobacco Corp., 529 U.S. 120 (2000) |
Abstain |
National Federation of Independent Business v. OSHA, 595 U.S. 109 (2022) |
Abstain |
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