The UK’s Department for Transport is probing “green diesel,” or HVO, touted as cutting carbon emissions by 90% with waste like used cooking oil. Yet, scrutiny from Transport & Environment shows Europe's massive POME biofuel use surpasses global supply, hinting mislabeling issues with palm oil. Amidst dramatic consumption rise—to 699 million litres in the UK by 2024—the investigation questions its eco-impact, aiming to uncover any fraudulent practices. Rapid demand is influencing prices as biofuel practices face potential reevaluation across Europe.