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Abstract: Shell CO2 Storage B.V. (SCS) is planning for the injection of some 10 million tonnes of CO2 in two depleted gas fields Barendrecht (BRT) and Barendrecht–Ziedewij (BRTZ), onshore, Western part of the Netherlands. This paper describes the process of selection of a tailor-made conceptual design for transportation and compression of the CO2, requiring a helicopter view of the full system from source to sink over the 30 year injection life cycle of the project. The concepts considered, selection criteria used and the selected concept will be subsequently discussed. The evaluation has eventually resulted in the selected concept of booster compression to 40 bar near the source, pipeline transport and an additional injection compressor at the injection well sites. Since the project will be situated in a densely populated area and is considered by many as a “new” activity, and because the success of the project is primarily defined by its safe execution, the project team has taken a “safety first” approach from the beginning of the project. For the conceptual design this has meant, among others, a drive to avoid uncertainties and/or to make (very) conservative assumptions in case uncertainties could not be avoided. The conservative approach has evolved in project-specific measures within the selected concept. [Copyright &y& Elsevier]