Figure suggests that the long-term policy goal, in the United States, of $100 t-CO2 -1 will be very challenging to surpass. The figure shows that the Gt-CO2 year -1 scale estimates range from $90 t-CO2 -1 to $1350 t-CO2 -1 , with three of the technologies being in a similar range, excluding KOH BPMED.