Businesses (in the EU and other countries) have to buy credits if they produce more carbon than allowed: > Each operator has an allowance of credits, where eac

Businesses (in the EU and other countries) have to buy credits if they produce more carbon than allowed: > Each operator has an allowance of credits, where each unit gives the owner the right to emit one metric tonne of carbon dioxide or other equivalent greenhouse gas. Operators that have not used up their quotas can sell their unused allowances as carbon credits, while businesses that are about to exceed their quotas can buy the extra allowances as credits, privately or on the open market. https://en.wikipedia.org/wiki/Carbon_credit https://en.wikipedia.org/wiki/Carbon_credit