EXCAVATOR

An excavator includes a lower traveling body; an upper turning body turnably mounted to the lower traveling body; an actuator configured to drive a driven part including the lower traveling body and the upper turning body; and a power storage device mounted in the upper turning body and configured to serve as an energy source for driving the actuator. The power storage device includes a plurality of power storage modules stacked in a vertical direction, each of the plurality of power storage modules including a power storage part and a housing configured to house the power storage part. The housings of power storage modules among the plurality of power storage modules that are adjacent to each other in the vertical direction, are coupled to each other.