Furthermore, there is a shortcoming in current DAC economic models when accounting for a sorbent's stability. Existing models assume the sorbent (or in some cases solvent) has constant performance until replacement and thus incorporate stability as a simple replacement rate. However, this oversimplification fails to consider sorbent capacity fade over time, which is inevitable as a sorbent degrades (e.g., oxidation, amine loss, fouling, poisoning, urea formation). Our prior analysis of a bioenergy with carbon capture and storage (BECCS) process revealed that incorporating a sorbent's capacity fade into the economic model significantly increases the predicted process cost and alters the recommended sorbent replacement times. These findings indicate that the details of a sorbent's degradation, specifically the rate and form of capacity fade over time, are crucial to include when evaluating competing properties and comparing process costs for different sorbents.