Coursework Example: Nutritional Information That Must Be Provided on ... Use nutritional information from food labels to calculate the energy provided by fat, protein and carbohydrate in each food In reference to figure 8, the energy supplied by fat is 16.2 kcal (1.8 g*9kcal/g); the energy produced by protein is 30.8 kcal (7.7g*4kcal/g), and the amount of energy generated by carbohydrates is 197.2 kcal (49.3g*4kcal/g).