POWER STORAGE DEVICE

A power storage device includes: at least one power storage cell having a lower surface provided with a safety valve; a lower case including a bottom surface located below the at least one power storage cell; a structural member fixed to the lower case; a spacer member fixed to the structural member to provide a space together with the bottom surface of the lower case; and a fastening member that fastens the spacer member to the structural member. The spacer member has a through hole provided below the safety valve.