The emissions trading market involves the buying and selling of permits for emitting carbon dioxide (CO2) and other greenhouse gases. Companies receive or buy emission permits, which they can trade. For every ton of carbon dioxide emitted, one allowance or credit is required. Firms that emit less can sell their extra allowances, providing an economic incentive to reduce emissions. https://logcla.com/blogs/554880/The-Emissions-Trading-Market-is-Estimated-to-Witness-High-Growth