For all productions of the State Opera, stage designs and requisites have to be stored well and safely in order to be able to be retrieved and used again when needed. Intendant Serge Dorny explains, "We are one of the largest repertory houses in the world, showing different productions several times and alternating old and new ones." Currently, he says, the State Opera has more than 60 opera productions and about 40 ballet productions and about 12 to 14 containers are needed for storage and transportation for each production.