Grower of castor seeds in Ethiopia.Biodiesel is a natural and renewable domestic fuel alternative for diesel engines and it is made of vegetable oils, mostly soy, rapeseed and sunflower. It contains no petroleum, it is non-toxic and biodegradable. Biodiesel burns clean, thus contributing to a significant reduction of Greenhouse gases and global warming. Nevertheless, the vast demand for edible oils created by the rapidly-growing Biodiesel industry, raised commodity prices significantly. Price constraints for all vegetable oils will continue to rise as growth in Biodiesel processing will put additional pressure on the vegetable oil supplies and the household budget.