A Warehouse is where your resources will be stored either for use or for trade. Clicking on the warehouse will bring up the trade menu and tell you your stock of each resource. Each map will begin with a single warehouse and further warehouses will need to be constructed alongside each other. Warehouses are vital not only for storing your goods but each warehouse comes with its own delivery droid, which will collect and drop off resources not only to the warehouse but to other areas of your base; for example the droid will deliver nutrients from your Nutrient Extractor to the mess halls.