The apparent DE and ME values of crude glycerol for growing pigs were determined in 5 experiments using crude glycerol (86.95% glycerol) from a biodiesel production facility, which used soybean oil as the initial feedstock. It was concluded that among all experiments, the crude glycerol examined in this study was shown to have a Digestible Energy of of 3,344 ± 8 kcal/kg and an Metabolized Energy of 3,207 ± 10 kcal/kg, thereby providing a highly available energy source for growing pigs.