A shovel including a power storage device; and an electrically driven part driven by discharge electric power from the power storage device. The power storage device includes a lower housing having a bottom panel and side panels; at least two power storage modules arranged at a distance from each other in a first direction on the bottom panel and configured to charge and discharge electrical energy; a first rib formed on the bottom panel of the lower housing, arranged between the two power storage modules, and configured to extend in a second direction intersecting in the first direction; and a second rib formed on the bottom panel of the lower housing, configured to extend in the first direction, and formed continuously with the first rib.