Gas holder is design to store biogas and other gases produced by means of anaerobic digestion. Gas holder structure consists of external protection film, internal membrane gas holder, pressure control system, safety system and other auxiliary equipment. Production technology allows produce materials highly resistant to cold and still secure low production costs. Gas holder produced from special materials with minimum lifetime of 1-15 years. Also optional typhoon coating can prolong system lifetime up to 50 years. Gas holder system has low weight and can be installed on any structure, which makes installation cost very low thanks to quick installation. Distinctive feature of the system is simplicity of installation, easy maintenance, and long operational period.