An apparatus for producing plastic containers includes: a forming machine for producing plastic preforms; a blow-molding machine for blowing the preforms to obtain containers, provided with a blow-molding carousel having a plurality of blow-molding molds that expand the preforms to obtain the containers; a thermal conditioning station interposed between the forming machine and the blow-molding machine; a storage station, configured for receiving and containing preforms; a supplying system for feeding the thermal conditioning station with preforms contained in the storage station.