Abstract: A storage system comprises a support assembly, a shelf assembly supported by the support assembly, and a drive system controllable by a user to raise and lower the shelf assembly. The shelf assembly includes a storage platform and panels that are removable from the storage platform. In some embodiments, the size of the storage platform is adjustable. In some embodiments, a single-point locking system is employed that includes a cam for engaging a sliding carriage that moves as the platform rises and lowers. A cam spring urges the cam towards a locking position, where the cam prevents the sliding carriage from moving in a platform-lowering direction.