A plant for producing and treating containers includes a heating device having a plurality of heating elements for heating a preform transported through the heating device, a blow-molding machine downstream of the heating device for forming the preform into a container, and a container treatment machine downstream of the blow-molding machine for treating a container. The heating device, the blow-molding machine, and the container treatment machine are operable synchronously at different production speeds. The plant also includes a control unit which is configured to adjust a power of at least one of the heating elements depending upon a change in the production speed of the blow-molding machine or the container treatment machine such that a total heat quantity, supplied to a preform, in the heating device does not exceed a specified limit value.