ENERGY STORAGE SYSTEM AND MICROGRID SYSTEM

The energy storage system includes: one or more battery clusters, where the battery cluster includes a plurality of battery cells, and a dimension of the battery cluster along a first direction is greater than a dimension of the battery cluster along a second direction; and an enclosure configured to accommodate the battery clusters, a dimension of the enclosure along the first direction being smaller than a dimension of the enclosure along the second direction; where along the first direction, the dimension of the enclosure matches the dimension of the battery cluster, such that the enclosure is configured to accommodate one row of battery clusters along the first direction, the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to a height direction of the enclosure.