The molecule that stores energy by linking charged phosphate groups near each other is adenosine triphosphate (ATP).

Here's why:

* Phosphate groups are negatively charged: The phosphate groups in ATP repel each other due to their similar charges.

* Energy is stored in the bonds: This repulsion creates a high-energy bond between the phosphate groups. When these bonds are broken, the energy is released.

* ATP as an energy currency: ATP is often called the "energy currency" of the cell because it readily releases and stores energy for cellular processes.

Let me know if you'd like more detail on how ATP works in the cell!