Energy Storage Truck

FIG. 1 is a top, front and right side perspective view of an energy storage truck showing the claimed design; FIG. 2 is a top, rear and right side perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top view thereof; and, FIG. 8 is a bottom view thereof. The broken lines shown in the drawings show portions of the energy storage truck that form no part of the claimed design.