Why do lipids store more energy than carbohydrates?

They also contain more energy per gram than carbohydrates which makes lipids a lighter store compared to a store of carbohydrates equivalent in energy. Whereas carbohydrates provide a readily available source of energy, lipids function primarily as an energy reserve. read more

Fats contain more energy than carbohydrates because they need more oxygen for each carbon atom, which in turn produces more energy. This arises because there are more electrons surrounding each carbon atom in fat. read more

Each gram of carbohydrates stores 4 calories of energy, whereas each gram of lipid stores 9 calories. As a result, lipids serve as a more compact way to store energy, since it contains more energy per gram than carbohydrates. read more