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Coalition for Renewable Natural Gas v. EPA — D.C. Cir. (Oct 13, 2026)
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The D.C. Circuit hears challenges to EPA's reduction of the 2024 cellulosic biofuel requirement. Under the Renewable Fuel Standard, refiners and fuel importers must meet annual renewable-fuel obligations. Cellulosic biofuel is a category that includes qualifying renewable natural gas used for transportation. Compliance is tracked through RINs, tradeable credits associated with qualifying fuel. EPA set the 2024 requirement in 2023, then lowered it in a rule published in July 2025, citing a shortfall. The fuel-production year was already over. The Coalition for Renewable Natural Gas will challenge that after-the-fact change. Jonathan Ellis, of McGuireWoods, will argue that it undercut the…