The main objective of this project is design and doing an economic study of an automated warehouse and a conventional one. A Spanish company provides the data for the calculation of the warehouse. Taking into account: demand, seasonality, product features, dimensions of the pallets, etc.. First step is to calculate the conventional warehouse, the sizing of the silo, reception area and area of expedition. The sizing of the picking area, the required number of docks and the number of operators for each area are also calculated. The second important block of the project consists on sizing the automated warehouse, dimensions of the silo and the areas of reception and expedition are calculated. It is also calculated the size of the picking area, the number of shuttles that will be needed in the silo and the number of docks. Last step is to make a budget for each warehouse and see the behavior for a period of 20 years then decide which warehouse it would be better from the economic point of view. For doing the economic study three methods will be used: · Pay-Back · NPV · IRR Finally the automated warehouse, despite of being more expensive to implement, their operational costs are much lower than the conventional one so finally the automated warehouse will be more profitable than the conventional warehouse.