US imports of biodiesel and renewable diesel slumped to a decade low in the first half of 2025 after a change in tax credits for the fuels came into effect, the US Energy Information Administration (EIA) said. The US this year revamped the way it awards tax credits designed to incentivise biofuel production and consumption, with the changes effectively ending such incentives for imports of biodiesel and renewable diesel. “This tax credit change placed imports at a relative economic disadvantage,” the EIA said. US biodiesel imports averaged 2,000 barrels per day in the first half of this year, compared with 35,000 bpd in the same period last year, EIA data showed. Renewable diesel imports fell to 5,000 bpd from 33,000 bpd last year.