Fuel producers just scored a green light from the nation’s highest court to go after California’s aggressive emissions standards. In a 7-2 decision Friday, the U.S. Supreme Court ruled that energy companies like Valero’s Diamond Alternative Energy do, in fact, have standing to challenge the EPA’s 2022 decision that allowed California to impose tougher emissions and electric vehicle mandates than the federal baseline.
Justice Brett Kavanaugh, writing for the majority, said plainly: “The government generally may not target a business or industry through stringent and allegedly unlawful regulation, and then evade the resulting lawsuits by claiming that the targets… should be locked out of court as unaffected bystanders.”
At the heart of the dispute is the EPA’s move under the Biden administration to reinstate California’s Clean Air Act waiver—a policy reversal from the Trump-era rollback. The waiver lets California, the largest car market in the country, set its own stricter tailpipe emissions limits and zero-emission vehicle mandates through 2025.
Fuel producers argued that these tougher rules kneecap liquid fuel demand and drive up compliance costs. The D.C. Circuit Court had tossed out the case last year, claiming the fuel producers failed to show their injury was traceable to the EPA’s waiver. The Supreme Court disagreed.
This ruling doesn’t decide the merits of the lawsuit—it merely revives it. But it adds to a growing body of Supreme Court skepticism over the regulatory reach of federal agencies. In recent years, the Court has curbed the EPA’s authority to regulate water pollution, power plant emissions, and cross-state ozone rules.
With a 6-3 conservative majority, the Court has increasingly questioned how much regulatory power Congress actually handed to agencies like the EPA. This latest decision signals that California’s long-standing autonomy under the Clean Air Act might not be as bulletproof as it once seemed. And for fuel producers, the courtroom door just swung wide open.
By Julianne Geiger for Oilprice.com
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