Meanwhile, Figure shows that it is never logical to use the current grid mix of electricity generation to power solid sorbent or KOH-BPMED DACS. The exception is if solar heat collectors or geothermal heat is available to supply solid sorbent DACS, as evidenced by the ESI Figure . The technologies that utilise natural gas for heat are not penalised as severely for using the current grid mix of electricity, allowing the deployment of these plants regardless of the grid mix. This is important as it is difficult to justify the opportunity cost of pairing low-carbon electricity to DACS currently, compared to using it to decarbonise the electricity grid. Email: jpy1@hw.ac.uk RCCS, Heriot-Watt University Whilst the distance from CO2 storage does not strongly affect the net removed cost (as shown in the 20 Email: jpy1@hw.ac.uk RCCS, Heriot-Watt University sensitivity analysis in the ESI Figures ), minimising the distance between DAC and the associated storage will reduce the number of local stakeholders and decrease the legal complexity of deploying any pipelines required. Figure shows that sweet spots exist between the availability of CO2 storage and low-carbon electricity. Some examples of these sweet spots may be the North-East of the United Kingdom, East China, or South-East Australia. However, it is essential to note that Figure does not highlight all the critical geographical aspects. Socio-political aspects and variations in life cycle analysis factors, such as local natural gas leakage rates, are examples. A key limitation of this study is that we do not consider the impact of climate on DAC technical performance. Some insightful studies have been published recently that address this for the solid sorbent and KOH-Ca looping technologies. In our solid sorbent DAC process modelling, we assume a temperature of 15°C and relative humidity of 55%. Wiegner et al. find that, under the extreme conditions of 30°C and 100% relative humidity, solid sorbent capital costs increase by 40%, whilst energy consumption also increases by 40%. Whereas at 5°C and 100% relative humidity, capital costs would be 30% less, and energy consumption would be 55% less. Meanwhile, Sendi et al. show that, with a heat pump, solid sorbent electricity requirements vary by ± 25% across the globe due to climate, and process productivity varies by ± 15% if temperatures below -15°C are avoided. The Keith et al. study that our KOH-Ca looping techno-economic analysis is based on assumes conditions of 21°C and 40% relative humidity. An et al. show that costs may increase by 25% under cool, dry conditions (5°C, 40% relative humidity) and decrease by 15% under warm, humid conditions (30°C 100% relative humidity) compared to this case. An analogy can be drawn between the KOH-Ca looping and the Email: jpy1@hw.ac.uk RCCS, Heriot-Watt University KOH BPMED technologies as they use the same contactor design, and the variation in cost due to climate stems from water loss and the CO2 capture rate in the contactor. To the best of our knowledge, currently, no studies analyse the impact of climate on the MgO ambient weathering process.