STORAGE BODY, POWER STORAGE ELEMENT UNIT, BUILDING WITH POWER STORAGE ELEMENT UNIT, AND INSTALLATION METHOD OF POWER STORAGE ELEMENT UNIT

To facilitate transportation of a storage body.SOLUTION: A storage body 15 of a power storage element module 11 includes a housing body 20 having an upper opening 20A. The housing body 20 includes a first side wall part 21 and a second side wall part 22 facing each other in a first direction D1. The first side wall part 21 includes a first protruding part 41 protruding in the first direction D1 toward the second side wall part 22. The first protruding part 41 includes a first lower surface 41a extending along an upper edge 21a of the first side wall part 21 and directed downward. The second side wall part 22 includes a second protruding part 42 protruding in the first direction D1 toward the first side wall part 21. The second protruding part 42 includes a second lower surface 42a extending along an upper edge 22a of the second side wall part 22 and directed downward.SELECTED DRAWING: Figure 3 【課題】収容体の運搬を容易にする。【解決手段】蓄電素子モジュール１１の収容体１５は、上方開口２０Ａを有する筐体本体２０を含む。筐体本体２０は、第１方向Ｄ１に互いに対向する第１側壁部２１及び第２側壁部２２を含む。第１側壁部２１は、第２側壁部２２へ向けて第１方向Ｄ１に突出した第１突出部４１を含む。第１突出部４１は、第１側壁部２１の上縁２１ａに沿って延び下方を向く第１下面４１ａを含む。第２側壁部２２は、第１側壁部２１へ向けて第１方向Ｄ１に突出した第２突出部４２を含む。第２突出部４２は、第２側壁部２２の上縁２２ａに沿って延び下方を向く第２下面４２ａを含む。【選択図】図３