Brazil’s Petrobras Employs Cardano Blockchain to Track Sustainable Aviation Fuel and Renewable Diesel
Brazilian state-owned oil company Petrobras has created two blockchain applications using Cardano technology to monitor sustainability data for sustainable aviation fuel (SAF) and its renewable diesel product, Diesel R. Developed jointly with PUC-Rio's Ledger Labs, these applications tokenize environmental attributes to prevent fraudulent reuse of eco-claims, enabling transparent tracking along the supply chain and facilitating emissions reporting for stakeholders.
Tokenizing Sustainable Aviation Fuel Attributes
The first application, developed in collaboration with PUC-Rio’s Ledger Labs, employs a Book-and-Claim model to tokenize environmental attributes associated with sustainable aviation fuel (SAF). This approach enables separation of the environmental benefits from the physical fuel and allows such benefits to be assigned to airlines, companies, or individual passengers even when the SAF is used elsewhere.
The tokens, termed CS-SAF, include metadata aligned with the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA). Passengers can claim these tokens through an app and receive certificates linked to their journey and corresponding environmental claims.
Digital Tracking of Renewable Diesel
The second application establishes digital checkpoints to monitor the production, transportation, and consumption of Diesel R, Petrobras’ renewable diesel fuel. This data aids Scope 3 emissions reporting — covering indirect emissions in a company’s value chain.
Ongoing Collaboration and Development Efforts
These initiatives form part of an ongoing R&D collaboration that began in 2023, initially focusing on blockchain education for Petrobras employees, and expanded in 2025 to energy sector research with PUC-Rio’s Ledger Labs.
Petrobras has not disclosed the volumes of fuel these applications cover nor a timeline for wider deployment.
Industry Trends in Blockchain for Sustainable Fuel Tracking
Similarly, Shell employs blockchain to track environmental attributes of SAF through Avelia, a Book-and-Claim platform launched in 2022 designed to track claims and prevent double counting.
By September, Shell reported Avelia supported over 84 million gallons of SAF entering the global fuel system since launch, resulting in more than 780,000 tonnes of CO₂ equivalent emissions avoided through June 2026.
Additionally, in January 2024, Australia’s Viva Energy partnered with NoviqTech to research digital Book-and-Claim systems for SAF, investigating blockchain’s role in emissions reporting and tracking environmental claims.
Why it matters
Petrobras’ adoption of Cardano blockchain marks a significant advancement in transparent and trustworthy tracking of sustainable fuels within the energy and aviation industries. By tokenizing environmental benefits, the technology helps prevent double-counting and fraud in ecological claims, aligning with international sustainability standards while increasing stakeholder trust. Moreover, the renewable diesel tracking application supports expanded Scope 3 emissions reporting, empowering companies to manage environmental impact more effectively across their value chains. Petrobras’ initiative reflects a broader global trend toward blockchain-enabled environmental accountability and may serve as a model for other energy sector players.
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