Abstract: A multitemperature storage system includes a storage structure including a plurality of upright members , a plurality of horizontal members supported by the upright members and forming a grid pattern defining a plurality of grid cells and allowing containers to be arranged in stacks beneath the grid cells defined by the grid pattern, and a track structure on top of the horizontal members , the track structure being configured to allow a load-handling device to move across the storage structure to retrieve a container from a stack ; and including temperature-control to maintain a first-temperature region within the storage structure at a first temperature and a second-temperature region within the storage structure at a second temperature.