💧VI. SAF Certificates
When fuel providers issue SAF certificates (SAFc) on the registry, they create a digital twin for the physical SAF in their chain of custody complete with certified data about the fuel. This data follows the SAFc around the registry as they are transferred and ultimately retired to make sustainability disclosures.
There are three fundamental types of certificates on the SAFc Registry:
Sustainable Aviation Fuel Certificates (or SAFc)
Each unit of SAFc represents all the environmental attributes pertaining to one metric ton of neat (i.e., unblended) SAF. SAFc are eligible for voluntary disclosure and issued in accordance with the process described in section 6.2 of the Registry Rulebook.
SAFc are eligible for voluntary disclosure purposes and may be used to make both Scope 1 and 3 emissions reductions claims. These emissions claims may also be cleaved into separate certificates in the registry through a process called "unbundling" which creates two new certificates, a SAFcA 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 3 emissions reduction claims, respectively.
SAF for Air Transport Providers (or SAFcA)
SAFcA represents the unbundled, Scope 1 emissions claims intended for air transport providers.
SAFcA (Type 1) may also be issued by fuel providers directly (e.g., with no Scope 3 component), if they demonstrate that the SAFc is to be used for compliance reporting purposes.
SAF End-user Reduction Claims (or SAFcE)
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 SAFc that are eligible for voluntary disclosure.
Since they are based on the same underlying fuel, both SAFcA and SAFcE inherit the same data elements that apply to their "parent" SAFc
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