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Application in modern sparkling wine production: A new production facility for a beverage manufacturer has to provide a storage volume for around 5 million bottles as a refrigerated warehouse. The maximum temperatures were not allowed to exceed 14 degrees C due to the quality requirements in the production process. To achieve highest energy efficiency and to avoid year-round heating and cooling, the warehouse should be passively conditioned: by explicitly coupling it with adjacent soil, its buffering effect was activated via uninsulated wall and floor components in contact with the ground. The warehouse stock was also integrated into the concept as thermal mass. Furthermore, the remaining building envelope was optimized to reduce heat gains and losses to external air to a minimum. The serviceability was demonstrated with a coupled thermal building simulation. It was shown that even with higher outdoor air and ground temperatures due to climate change, an active conditioning of the warehouse can be avoided when designing exterior walls and roofs of highest thermal quality.