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Abstract: This paper summarizes key results from the Collaborative COCATE Project for the European Commission (FP7). The costs of transporting a total of 13.1 MtCO2/y from small- to large-scale emitters around Le Havre (France), to Rotterdam (Netherlands) via onshore pipeline or shipping are evaluated. Sources send emissions to five CO2 capture centres, which are then linked via a 40km long collection network to deliver the treated CO2 to the point of export. This network was designed to accommodate peak flow rates and multiple network designs were considered for the various export scenarios evaluated in the study. The economic evaluation established that conditioning CO2 at the cluster level, rather than at the point of export, and transporting it in dense phase was the most cost-effective solution for both export systems. As for exporting the CO2 from Le Havre to Rotterdam, the evaluation highlighted three potential transport solutions: either onshore via one 24in. or one 28in. diameter pipeline or offshore using three ships with effective capacities of 30,000m3 each. The onshore pipeline options proved to be 10% cheaper than the shipping scenario. Sensitivity analyses confirmed that the onshore options remained the best choice. [Copyright &y& Elsevier]