A rail profile (210, 310, 610, 710) which is designed in the form of a hollow profile of a crane-girder rail and has a guide (215, 315, 615, 715), which is formed longitudinally in a central cavity (216, 316, 616, 716) and is intended for accommodating a crane trolley (220, 320, 620, 720), wherein the rail profile (210, 310, 610, 710) additionally has at least one accommodating device (219, 319, 619, 719) for accommodating at least one energy chain (230, 330, 630, 730), wherein the at least one accommodating device (219, 319, 619, 719) is integrated in the rail profile (210, 310, 610, 710) and extends in the longitudinal direction thereof, wherein the at least one accommodating device (219, 319, 619, 719, 719a, 719b), for accommodating the energy chain (230, 330, 630, 730), is arranged laterally along the central cavity (216, 316, 616, 716).
