According to the forecast from McKinsey, annual global demand for carbon credits could reach up to 1.5 to 2 billion metric tons of carbon dioxide by 2030 and up to 7 to 13 billion metric tons by midcentury.

This has steep implications for the voluntary carbon market: McKinsey estimates that in 2020 just a fraction of these totals were retired by buyers, at roughly 95 million metric tons.

Source: www.visualcapitalist.com