Cardano Enters Petrobras Research on SAF and Renewable Diesel

Brazilian oil giant Petrobras is testing Cardano blockchain technology in research projects designed to improve the tracking of lower-carbon fuels and prevent environmental benefits from being claimed more than once.

The work focuses on sustainable aviation fuel (SAF) and renewable fuel attributes. Petrobras is developing the system with PUC-Rio’s LedgerLabs and the Cardano Foundation. The research explores how blockchain can record sustainability data across fuel production, certification, trading and use.

Tracking those attributes has become increasingly important as companies seek to document emissions reductions. Brazil’s energy regulator, ANP, says SAF certificates must capture information including fuel volume, feedstock, production process, origin and emissions reductions. The rules also allow environmental attributes to be separated from physical fuel under a Book-and-Claim model, provided safeguards prevent double counting.

Blockchain Targets Double Counting

Under the Petrobras project, renewable fuel attributes can be represented as digital tokens on Cardano. The Cardano Foundation says the system assigns each attribute a unique record that can be transferred and eventually retired.

That structure is intended to make a sustainability claim verifiable and prevent the same environmental benefit from being used twice. It could also improve visibility when physical fuel and its environmental attributes move through different parts of the supply chain.

Petrobras already produces SAF with renewable feedstocks through co-processing at its Duque de Caxias refinery. The company says the renewable portion can deliver more than 80% lower carbon dioxide emissions than its fossil counterpart.

Blockchain Fits Wider Fuel Strategy

The research comes as Petrobras expands its renewable-fuel ambitions. The company plans dedicated production facilities for bio-jet fuel and renewable diesel, including a project at its Presidente Bernardes refinery with planned capacity of up to 15,000 barrels per day.

For investors and fuel buyers, the blockchain work could provide another layer of transparency around environmental claims. However, the technology remains part of Petrobras’ research and development program rather than a replacement for regulatory certification.

The broader goal is to create a traceable digital record that links fuel attributes to measurable emissions data, giving participants a clearer way to verify sustainability claims across the energy value chain.