A rotary cleaning nozzle for cleaning surfaces of a beverage bottling installation using a fluid, comprising a nozzle assembly which has a feed duct for the fluid, and a nozzle head which is mounted rotatably on the nozzle assembly and has at least one nozzle outlet opening from which, during operation, fluid flowing through the feed duct and the nozzle head emerges in the form of a cleaning jet. The rotary cleaning nozzle furthermore comprises an electrical generator for the induction of electrical energy by way of rotation of the nozzle head, and a control unit for indicating a rotation of the nozzle head in dependence on the induced electrical energy.