Used Cooking Oil (UCO)
The biodiesel segment currently dominates the global used cooking oil (UCO) market. This is because spent cooking oil is more readily available and less expensive than vegetable oil, which encourages producers of biodiesel to use it as a main feedstock. This in turn increases demand for used cooking oil. Additionally, there is an increase in the manufacture of biodiesel from spent cooking oil because it uses 96 percent less energy than fossil diesel production while saving 21 percent of fossil energy compared to crude oil.