Aerleum
- Seed
- Energy
- Industry


Sébastien Fiedorow
CEO & Co-Founder
Steven Bardey
CTO & Co-Founder
Aerleum was co-founded by a chemist and a venture capitalist, combining deep technical and strategic expertise.
Contact usAerleum turns CO₂ from air into clean fuels and chemicals, aiming for fossil price parity at scale.
Aerleum has pioneered a revolutionary reactive CO₂ capture technology, enabling direct conversion of atmospheric CO₂ into high-value commodities such as fuels and chemicals. This groundbreaking one-step approach unlocks price competitiveness and ensures scalability and the production of carbon-neutral products. It paves the way for deep decarbonization in hard-to-abate sectors: maritime, aviation, and chemicals, where viable solutions don’t exist.
investors
- Marble
- Norrsken
- HTGF
- 360 Capital
- Bpifrance
1,400 kg CO2
CO2 avoided per ton
of methanol produced
Building a future where energy and materials no longer rely on fossil fuels, but on CO₂, from air to industry. Beyond alternatives, Aerleum rewrites the baseline: clean, scalable, competitive.
Problem
The race to decarbonize hard-to-abate sectors is on, yet clean, cost-competitive synthetic fuels remain out of reach. Renewable methanol is emerging as a strategic alternative, but supply falls far short of soaring demand. And its cost remains up to 5× higher, due to fragmented value chains, energy-intensive processes, and limited access to renewable CO₂. Meanwhile, regulatory and commercial pressure keeps mounting from zero-emission mandates in shipping to brand-driven decarbonization strategies across industries.


Aerleum combines a tier-1 team, a bold vision to replace petroleum with CO2 from air, and a solid business model ready for scale
Solution
Aerleum integrates CO₂ capture and conversion in a single reactor, eliminating energy-intensive steps and slashing production costs. Our modular system delivers clean methanol with up to 2x higher energy efficiency and a carbon footprint 90% lower than fossil fuels. By reaching cost parity with fossil-based methanol and performance on par with existing industrial fuels, Aerleum removes key barriers to adoption, paving the way for synthetic fuels to scale where they’re needed most.