Executed through registry interfaces or Soldera virtual accounts, cancellation (also known as retirement or redemption) is one of two ways an EACs lifecycle comes to an end, the other being expiration. Once cancelled, EACs are removed from circulation as they become ineligible for transfer or future use. This mechanism exists to prevent the double counting of renewable energy: multiple parties cannot claim attributes from identical certificates, because all registry protocols block duplicate retirements. Cancelling an EAC grants the user a cancellation certificate, which are essential to keep for complete audit trails and market-based Scope 2 disclosure.