Energy Storage System

FIG. 1 is front, top, right perspective view of an energy storage system according to my new design;

FIG. 2 is a top view thereof;

FIG. 3 is front, top, left perspective view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a bottom, front, right perspective view thereof;

FIG. 9 is a bottom view thereof; and,

FIG. 10 is a bottom, front, left perspective view thereof.

The broken lines shown in the drawings illustrate portions of the energy storage system that form no part of the claimed design.