Petrobras Tokenizes Sustainable Aviation Fuel Certificates on Cardano to Prevent Double Counting
Brazilian energy giant Petrobras is using Cardano blockchain technology to improve the traceability of sustainable aviation fuel (SAF) certificates, bringing one of Latin America’s largest energy companies into a growing market for blockchain-based environmental tracking.
The initiative was highlighted again by the Cardano Foundation, with its LATAM Business Development Lead, Rafael Fraga, joining Petrobras on CNN Brasil to discuss the tokenization of SAF certificates. The project focuses on making environmental benefits associated with sustainable aviation fuel easier to verify while reducing the risk of duplicate claims.
The collaboration is particularly relevant to the aviation industry, where airlines increasingly face pressure to demonstrate progress in reducing emissions. Sustainable aviation fuel can lower lifecycle greenhouse gas emissions compared with conventional jet fuel, but tracking its environmental benefits across producers, airlines and other participants requires reliable documentation.
Petrobras is addressing this challenge through a blockchain-based system that connects physical fuel certificates with digital records of their associated environmental attributes. Cardano provides the infrastructure for recording, transferring and verifying those attributes, creating an auditable history of how each environmental benefit is allocated.
How Cardano Tokenization Works for Sustainable Aviation Fuel
The project uses a Book-and-Claim model, which separates the environmental benefit of sustainable aviation fuel from the physical fuel itself. This allows an airline or passenger to claim the environmental benefit associated with SAF even when the fuel is produced or consumed at a different location.
Under the model, environmental attributes are represented through digital tokens known as CS-SAF. These tokens are linked to the original fuel certificates and can be issued, transferred, verified and eventually retired on Cardano.
Retirement is particularly important because it prevents the same environmental benefit from being claimed multiple times. Once an attribute has been allocated and claimed, its token is permanently retired, leaving a record that can be independently checked.
The system also introduces a consumer-facing application. Passengers can enter their departure and destination airports, calculate the corresponding sustainable aviation fuel environmental benefit and receive a certificate recording their journey and allocation. This creates a connection between the original SAF certificate and the final environmental claim.
The initiative was developed through collaboration between Petrobras, the Cardano Foundation and PUC-Rio’s Ledger Labs. It forms part of a broader research and development partnership focused on applying blockchain technology to energy markets and environmental reporting.
Cardano Expands Its Real-World Energy Applications
The SAF project is not the only Petrobras initiative involving Cardano. A second application focuses on Diesel R, Petrobras’ renewable diesel brand, creating digital checkpoints across fuel production, transportation and use.
The objective is to establish a continuous record of the fuel’s lifecycle. Information from different stages can be connected to support supply-chain verification and Scope 3 emissions reporting, which covers indirect emissions generated across a company’s wider value chain.
Together, the two applications demonstrate how public blockchain infrastructure can be applied beyond cryptocurrency payments and financial transactions. In this case, the technology is being tested as a shared verification layer for environmental information involving multiple organizations.
For Cardano, Petrobras represents an important institutional use case in Brazil, particularly because the projects address practical challenges in an established industrial sector. The partnership also builds on earlier cooperation involving blockchain education for Petrobras employees and research with PUC-Rio.
However, the distinction between research development and commercial deployment remains important. The projects were announced as research initiatives, and no comprehensive commercial rollout timeline or fuel volumes covered by the applications have been disclosed.
The significance of the collaboration will ultimately depend on adoption by airlines, fuel producers and other participants in the aviation supply chain. If the system progresses beyond research, Cardano could provide infrastructure for verifying environmental claims in a market where transparency, auditability and the prevention of double counting are increasingly important.
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