Abstract: A system for storing items comprises a rack with upstanding posts delimiting a vertically extending storage space with individual storage locations formed by generally horizontally-oriented members supported on the posts. The system includes trays respectively removably received at the individual storage locations. The system further includes an elevator configured for moving the trays between the storage locations and a user-retrieval space adjacent a bottom of the rack. The system features an electrical power distribution system to deliver electrical power from a source to items on the trays, which includes distribution ports supported on the rack and respectively associated with the individual storage locations, receiver ports carried on the trays and configured for removably electrically connecting with the distribution ports, and electrical receptacles electrically connected to the receiver ports and configured to connect to electrical loads.