Energy Storage System

FIG. 1 is a top, front and left side perspective view of an energy storage system showing my new design; FIG. 2 is a bottom, rear and right side perspective view thereof; FIG. 3 is a front elevational view thereof; FIG. 4 is a rear elevational view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top plan view thereof; FIG. 8 is a bottom plan view thereof; FIG. 9 is an enlarged view of portion 9 in FIG. 2 ; and, FIG. 10 is an enlarged view of portion 10 in FIG. 2 . The broken lines in the drawings illustrate portions of the energy storage system which form no part of the claimed design. The dot-dashed lines illustrate the boundary of the enlarged views and form no part of the claimed design.