To provide an energy storage system for a multiple dwelling house which can be widely disseminated by ensuring installation places of an electricity storage means and a heat storage means, and solving a problem of the high total cost of the energy storage system.

The energy storage system for the multiple dwelling house is used in the multiple dwelling house 1 comprising a plurality of dwelling houses 1a, 1b, 1c, 1d. The energy storage system includes: a storage battery 3 as an electricity storage means which is provided on a middle floor landing 2c of a stair hall 2 forming a common area of the dwelling house 1, and shared by the plurality of dwelling houses 1a, 1b, 1c, 1d; and heat storage hot water storage devices 5, ... as heat storage means which are respectively provided in the plurality of dwelling houses 1a, 1b, 1c, 1d.