
Diamond Alternative Energy, LLC v. EPA
The Supreme Court ruled that fuel producers have Article III standing to challenge EPA-approved California regulations requiring more electric vehicles, finding that the producers sufficiently demonstrated that invalidating the rules would likely redress their economic injuries. The decision reversed a lower court holding that the producers failed to prove automakers would manufacture fewer electric vehicles in the absence of the regulations.
- Status
- Decided
- Appeal from
- United States Court of Appeals for the District of Columbia Circuit
- Argued
- Apr 23, 2025
- Decision released
- Jun 20, 2025
Decision briefing
The case in plain English
Structured case briefing unavailable
The generated briefing for this case is missing or invalid, so this page is not rendering a partial substitute. Use the timeline, sourcing note, and primary materials below instead.
Where things stand
Timeline
Source note
How this page is sourced
This page is grounded in official case materials and tracker data.
Page data last refreshed Mar 9, 2026.
Primary materials
Documents & resources
Briefs
Opinions
Audio
Recent coverage
In the news
More to watch