Petrobras Tests Cardano Blockchain in Two Lower-Carbon Fuel Projects
Brazilian state-controlled energy company Petrobras is testing Cardano blockchain technology in two projects focused on lower-carbon fuels, using the network to improve the traceability of environmental claims and fuel lifecycle data.
According to Coin Bureau, the initiatives cover Sustainable Aviation Fuel (SAF) and Diesel R, with Cardano being used to record information associated with fuel provenance, environmental attributes and emissions data.
The projects are part of an ongoing research and development collaboration involving Petrobras, the Cardano Foundation and Ledger Labs, the blockchain center of Pontifícia Universidade Católica do Rio de Janeiro. The Cardano Foundation said the two applications are designed to address challenges around making environmental claims and fuel lifecycle information easier to trace and verify.
Cardano Applied to SAF and Diesel R
For SAF, the system connects a physical fuel certificate with a digital record of its associated environmental attributes. The Cardano Foundation's case study says the system allows SAF attributes to be tokenized, transferred and retired on the blockchain, creating an auditable record for sustainability claims.
The approach is based on a Book-and-Claim model, in which environmental attributes can be tracked separately from the physical fuel. The system is designed to prevent the same sustainability attribute from being claimed more than once by recording its lifecycle on a public blockchain.
The second application focuses on Petrobras' Diesel R, a diesel product containing renewable content. Petrobras says Diesel R is produced by co-processing mineral diesel with renewable feedstocks such as vegetable oil or animal fat. The product is classified under Brazil's Diesel C category created by ANP Resolution 968 in 2024.
For Diesel R, the Cardano application links information across production, transportation and use. According to the Cardano Foundation, this is particularly relevant to reporting Scope 3 greenhouse-gas emissions.
Petrobras' Broader Blockchain Research
The blockchain initiatives form part of a wider Petrobras research program examining tokenization, Web3 infrastructure and digital processes across its energy value chain. A sector report on the company's research describes the SAF project as exploring tokenized renewable attributes, certification, Scope 3 traceability, and blockchain-based trading and logistics platforms.
Petrobras has already developed commercial products in both areas. Its SAF is produced at the Duque de Caxias Refinery and combines conventional aviation kerosene with a renewable fraction from sustainable feedstocks. The company says its SAF has obtained CORSIA sustainability certification.
Diesel R is also already produced and marketed by Petrobras. The company says the fuel can use existing vehicle and storage infrastructure because its renewable component is chemically similar to mineral diesel.
Focus on Verifiable Environmental Data
The Cardano projects put the emphasis on documenting environmental information rather than changing the physical characteristics of the fuels themselves. For SAF, the blockchain records the attributes associated with certified fuel, while the Diesel R application is focused on tracing information throughout the fuel's lifecycle.
The work therefore provides a specific enterprise use case for blockchain technology within Petrobras' lower-carbon fuel activities. The current projects center on traceability and verification of environmental data, with the SAF research identified as an ongoing Petrobras R&D initiative.
Writer: Victoria HaleTechnology & Blockchain WriterVictoria Hale writes about blockchain technology, digital infrastructure, and the intersection of emerging technologies with finance. Her articles explore how new protocols and systems are shaping the evolving digital economy.She prioritises clarity and accuracy when explaining technical developments to a general audience.
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