Explain how lipids lead to ATP production?
Same way glucose does.
I don't want to get the minute details wrong, but here's the process, and it's identical to how glucose leads ATP production.
Lipids enter cells through channels similar to glucose ones, but designated for lipids instead of carbohydrates. Then lipase splits them into separate parts (fatty acids & glycerol I think). The glycerol can either be used to make pyruvic acid and the energy of breaking its bonds can be used to make ATP, or it can go to making glucose, which is stored for later use.
Source: Took a college bio course.