Figure shows that the initial high cost of a small modular FOAK plant for solid sorbent DACS may be mitigated by higher learning rates and more doublings by 2030 at the latest if deployment continues. Another critical observation from Figure is that the difference in cost between the two uptake scenarios is greater than the difference between a 25% or 100% market share, indicating that we could scale four technologies simultaneously and still expect to bring down the cost through technological learning. We do not need to pick a winner up front. From Figure , we see that the longterm costs, towards the end of the century, are likely heading to around $100-600 t-CO2 -1 . When this is achieved depends on the scenario. For example, under the low uptake scenario, the costs plateau by around 2075. Meanwhile, under the high uptake scenario, this will happen by 2050. Email: jpy1@hw.ac.uk RCCS, Heriot-Watt University uptake scenarios were identified that would still allow us to limit the planet's warming to 1.5°C or 2°C, based on integrated assessment modelling studies, whilst we also allowed for a 25% or 100% technology dominance. This is for the United States paired with nuclear electricity and a heat pump for low-grade heat where appropriate.