CO2 is already transported via dedicated pipelines in the United States, where more than 40 million tonnes are conveyed each year over a 2,500-kilometer network. The CO2 must then be pressurized to at least 73 bar to reach a supercritical state and a high density, giving it properties similar to the liquid state.

When transport distances exceed 500 to 1,000 km (the threshold varies according to the source quoted), transport by ship is considered a more economical option. In this case, CO2 is transported in the liquid state under conditions comparable to those of LPG (liquefied petroleum gas) transport.