💧VI. SAF Certificates

When fuel providers issue SAF certificates (SAFc) on the registry, they create a digital twin for the underlying SAF in their chain of custody, complete with the real-world data they provided about the fuel. This data follows the SAFc around the registry as they are transferred and ultimately retired to make sustainability disclosures.

There are two fundamental types of certificates on the SAFc Registry:

Each unit of SAFcA represents all the environmental attributes pertaining to one metric ton of neat (i.e., unblended) SAF. SAFcAs are issued in accordance with the process described in section 6.2 of the Registry Rulebook.

SAFcA that are eligible for voluntary disclosure purposes may be used to make both scope 1 emissions and scope 3 emissions reductions claims. These emissions claims may be cleaved into separate certificates in the registry through a process called "unbundling". The result of an unbundling is the generation of two new certificates, an altered SAFcA (that can no longer be unbundled) and a SAFcE. The SAFcA and SAFcE both represent the same volume of underlying SAF but may only be used to make scope 1 and scope 3 emissions reduction claims respectively.

Each unit of SAFcE represents the end-user (i.e., Scope 3) claims pertaining to one metric ton of neat (i.e., unblended) SAF. SAFcE are the product of the unbundling of SAFcA that are eligible for voluntary disclosure.

Since they are based on the same unit of fuel, SAFcE inherit the same data elements that apply to their "parent" SAFcA

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