Plain-English summary
Restricts EPA’s authority to set industrywide emissions standards for power plants
In West Virginia v. EPA (consolidated with North American Coal), the Supreme Court held that the EPA overstepped its statutory authority when the agency based emissions limits for existing power plants on system-wide, industrywide measures rather than technologies applied at individual plants. The Court reversed and remanded the lower-court judgment limiting EPA’s regulatory approach.
Why this matters
The ruling narrows EPA’s ability to regulate greenhouse-gas emissions by using economy-wide or systemwide solutions rather than measures applied at individual facilities. It sets a precedent that federal agencies need clear congressional authorization to address major regulatory questions, which could affect future climate and environmental rules and how agencies craft regulations across many industries.
Who may feel it
- Owners and operators of coal- and gas-fired power plants
- State governments that set or implement power-sector policies
- Electric utilities and energy markets
- Regulatory agencies (EPA and others) and industries facing major regulatory actions
- Consumers and communities affected by energy prices and air pollution
Key questions
- Does the Clean Air Act authorize the EPA to set emissions standards for existing power plants based on systemwide, industrywide measures rather than controls applied at individual facilities?