Required energy to metabolize fat
So, what I was looking for, but was lacking the knowledge of, was the concept of &quot;Thermic Effect of Food&quot;
I really didn't know how to phrase my question well, due to the fact that I tackled the problem from the wrong angle.
Direct quote from the Wikipedia Article as it answers the question best:

The thermic effect of food is the energy required for digestion, absorption, and disposal of ingested nutrients. &gt;Its magnitude depends on the composition of the food consumed:
Carbohydrates: 5 to 15% of the energy consumed [7]
Protein: 20 to 35% [7]
Fats: at most 5 to 15 %[8]