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
Alexandre Mordacq
Partner at 360 Capital
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.
Media About Us —


Article
October 14, 2024Aerleum raises $6m


LinkedIn Post
August 22, 2024Aerleum is Gold Medalist at EDF Pulse!


Article
October 14, 2024Aerleum veut décarboner le maritime grâce à l'e-méthanol


LinkedIn Post
March 20, 2025Aerleum joins Third Derivative, the climate tech accelerator of RMI


Article
November 21, 2025French Startup Aims to Make Fuel Out of Thin Air


Article
September 20, 2024Aerleum fait partie des lauréats du concours I-Lab


Podcast
November 20, 2024