About CO2IN

A CO2IN is a voluntary carbon credit backed by a real EU emission allowance. These pages explain what that means in practice.

• What is CO2IN — what you are buying, how much CO2 a credit represents, and why it is not a cryptocurrency.
• How it reduces emissions — how removing allowances from a capped market lowers emissions, and where your money goes.
• Certification and audit — the ISO standard, who validates it, and how to get a certificate for emissions you have offset.