The impact of energy systems demands on pressure limited CO 2 storage in the Bunter Sandstone of the UK Southern North Sea

•National techno-economic pathways to reduce carbon emissions are required for the United Kingdom to meet its decarbonisation obligations as mandated by the Paris Agreement.•Analysis using energy systems models indicate that carbon capture and storage is a key technology for the UK to achieve its mitigation targets at lowest cost.•We generate a range of numerical simulations of CO2 injection into the Bunter Sandstone to evaluate sensitivities of a given reservoir system to future development pathways.•The numerical simulations are matched with analytical models of local and regional pressurisation. Discrepancies in the match are mostly due to the interaction of signals from multiple injection sites and heterogeneous permeability in the numerical simulations.