What is the cellular location of triacylglycerols when stored?

In the cytoplasmic lipid droplets called adiposomes.

Explanation:

Triacylglycerols are the simple type of lipid consisting of three long-chain fatty acids combined with a glycerol backbone. In animals, the store of triacylglycerol is the adipose tissue and they are stored as adiposomes which are cytoplasmic lipid droplets. These droplets are encloses by a layer of phospholipid and protein, the protein gives it the hydrophobic barrier. The blood contains little amount of triacylglycerols. They serves as a major component of very low density lipoproteins and gives energy. Triacylglycerols are formed by the action of lipases on dietary fats.