For a carbon farm to be cost-efficient, CO2 capture cost must be at least $4-5 per tonne
According to ACCU (Australian Carbon Credit Units), if CO2 capture cost is less than $4-5 per tonne, carbon farms will run at a loss. At the same time, with CO2 capture costs at $20-25 per tonne, carbon farming is already becoming more profitable than traditional farming. (Of course, these estimates may vary depending on the region and the crops grown).
However, the price of carbon is not subject to regulation since it is actually an exchange commodity. The trading unit is a metric tonne of CO2 discharged into the atmosphere. This unit is also used for calculating the amount of emission credits to be purchased by businesses to compensate for the damage they inflicted on the environment.