AbstractThe future deployment of carbon capture and storage (CCS) is uncertain. This may be caused by differences in assumptions about techno-economic parameters such as CO2 storage cost and capacity. How much of the uncertainty in these variables translates into uncertainty in the deployment predictions of CCS is investigated using the TIMER model. Preliminary results show that storage cost variations result in a considerable range of global cumulative CO2 captured until 2050 from electricity production of about 46-162 GtCO2. Also, the regional impacts of storage costs differ strongly. Decreasing the storage capacity decreases global cumulative capture from power production by only -3 GtCO2 until 2050.