Redrock Sustainable aviation fuel
Biogenic CO₂ as the carbon backbone for e-SAF, the drop-in fuel aviation needs to meet binding blending mandates.
Sustainable aviation fuel & biogenic CO₂
The CO₂ everyone else vents.
Every biogas upgrading plant releases a stream of near-pure, renewable CO₂, and almost all of it is thrown away. As aviation runs out of ways to decarbonise, that overlooked carbon becomes one of the most valuable things on the site.
- Biogenic CO₂
- e-SAF
- Power-to-liquids
- ISCC · CORSIA · RED III
- Offtake structuring
The opportunity
The gas gets the attention. The carbon is the prize.
When raw biogas is upgraded to biomethane, it is split into two streams: the methane that goes to the grid, and a stream of biogenic CO₂ that is almost always vented to atmosphere. The industry has spent a decade optimising the gas. The CO₂ has been treated as an afterthought.
That is about to change. Aviation cannot electrify, and blending mandates for sustainable fuel are now becoming law. The synthetic fuels that answer them need a renewable carbon source, and sustainable CO₂ is scarce. The biogenic CO₂ already being vented across the biomethane sector is exactly that source.
What we do
From vented waste to bankable fuel.
Working with specialist technology partners and our in-house development team, Redrock develops the routes that capture biogenic CO₂ and turn it into feedstock for sustainable aviation fuel and power-to-liquids.
Just as important, we structure the offtake and certification, across ISCC, CORSIA and RED III, that turns a promising molecule into a financeable revenue stream. Technology and paperwork have to arrive together for these projects to stand up, and we work both sides.
Routes to value
More than one route to value.
Power-to-liquids
The same feedstock routed into synthetic e-fuels for shipping, heavy transport and other hard-to-electrify sectors.
Merchant biogenic CO₂
High-purity, certified biogenic CO₂ as a product in its own right, where a fuel route is not yet in reach.
Carbon value
Structured, verifiable carbon outcomes that stand up to scrutiny and add a revenue line to the host project.
Why now
A narrow, near-term window.
Mandates are now binding
Aviation fuel blending obligations and international schemes are moving from ambition to law, creating firm, growing demand for sustainable fuel.
Sustainable carbon is scarce
E-fuels need a genuinely renewable carbon source. Biogenic CO₂ from biogas upgrading is one of the few that qualifies at scale.
The CO₂ is already there
Every biomethane plant produces a stream of near-pure biogenic CO₂ at upgrading, and today it is usually vented and wasted.
Buyers are ready
Airlines and corporates are contracting sustainable fuel and high-integrity carbon ahead of supply, rewarding those who move early.
Running a biomethane project?
If you’re venting biogenic CO₂ today, you may be venting your best revenue line. Let’s talk about capturing it.
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