NOVELTY - The solar powered lighting unit (40) has a housing (50) having an obverse light area and a reverse basal area. A mounting arrangement (70) has a basal gripping surface extending along the reverse basal area and dimensioned and configured for engaging a portion of selected structural element. The gripping elements (80) grips the selected structural element to affix the housing to railing system with the light receptor in position to receive impinging solar light and with the light emitter in position to emit illuminating light from the railing system.    USE - Solar powered lighting unit.    ADVANTAGE - The solar powered lighting units constructed for ready attachment to a selected structural element of an outdoor railing system to enhance safety. The creation of various decorative lighting effects along outdoor railing systems is enabled with ease and economy. The establishment of safety or decorative lighting in connection with outdoor railing systems is simplified without requiring the expense associated with the installation and maintenance of electrical wiring system. The solar powered lighting units are simplified, relatively inexpensive construction for promoting widespread use in connection with lighting along outdoor railing systems. The ready installation in connection is enabled with lighting at outdoor railing systems without the need for a high degree of skill or specialized tools. The reliable and economical lighting in connection with outdoor railing systems are established, with reduced requirements for maintenance and increased ease of any required maintenance. The current solar powered lighting technology provides convenient, effective and relatively economical lighting in the vicinity of outdoor railing systems to promote greater safety, or for aesthetically desirable decorative effects.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for providing outdoor railing system with illuminating light during darkness hours.    DESCRIPTION OF DRAWING(S) - The drawing shows an enlarged front, side and exploded pictorial view of the solar powered system.    Solar powered lighting unit (40)    Housing gripping elements (50)    Mounting arrangement (70)    Gripping elements gripping elements (80)