Hydrotreated Vegetable Oil (HVO) is a renewable diesel fuel made from vegetable oils, animal fats, or waste oils that undergo a refining process known as hydrogenation. This process removes impurities and creates a cleaner-burning, high-quality fuel that can be used in diesel engines without modification. HVO reduces greenhouse gas emissions and other pollutants compared to traditional fossil diesel, making it a more sustainable fuel option for transportation and industrial applications.