An electric storage device according to the present invention includes: an electrode assembly including positive and negative electrode plates that are insulated from each other, at least one of the electrode plates having an active material layer formed part and an active material layer non-formed part; positive and negative current collectors; and a metal material abutted against the active material layer non-formed part, wherein the metal material includes a curled part in which an edge of the metal material is curved in a direction away from the active material layer non-formed part, and the active material layer non-formed part, each of the current collectors, and the metal material are integrally coupled.