Triglycerides make up more ATPs because they have three fatty acid tails connected to glycerol and they give additional energy.
Glycerol can be transformed to glyceraldehyde-3-phosphate, a glycolysis intermediate, and then used to complete the cellular respiration breakdown cycle.
As a result, lipids produce nearly twice as much energy as complex carbohydrates.
Triglycerides or Fats are the most important lipids inside our body and the richest reservoir of energy.