$5m · Seed · Energy · London, UK
MCatalysis, a London-based developer of microwave-driven catalysts for low-carbon fuels, has raised $5m in seed financing co-led by HL Energy Ventures and Oxford Science Enterprises. The financing is separate from a recent $2.25m award from UK Research and Innovation.
The company is developing catalysts that use microwave energy to convert offgas, waste plastics and biomass into drop-in fuels designed for existing engines, pipelines and refining infrastructure. MCatalysis says the process can avoid some of the extreme temperatures and multi-stage equipment used in conventional refining and earlier synthetic-fuel routes; its cost and performance claims still need to be demonstrated at industrial scale.
Proceeds will fund an industrial pilot at the Axel'One chemical-innovation platform in Lyon, while research and development remains centred in London. Queen Mary University of London says the company’s research partnership combines catalysis, materials science, microwave technology and chemical engineering to move the process beyond the laboratory.
The pilot has to prove both chemistry and economics
MCatalysis’s adoption thesis depends on fitting into the fuel system customers already operate. Using waste-carbon feedstocks and producing compatible fuels could reduce the need for new end-use equipment or distribution networks, shifting the commercial question towards production cost, consistency and plant performance. That makes the Lyon pilot more than a scale demonstration: it needs to show usable yields, catalyst durability and energy consumption under operating conditions that can support the company’s below-commodity-cost ambition.
The financing mix reflects that stage of risk. Equity capital can build the pilot and commercial team, while the separate UKRI award supports technology development without being presented as part of the seed round. If the pilot validates the process across several feedstocks, MCatalysis could pursue modular installations alongside refiners, chemical producers and feedstock owners. If performance varies materially by input or scale, integration and quality-control costs could weaken the apparent infrastructure advantage.
The company is commercialising technology that emerged from more than a decade of University of Oxford research. The next milestone is therefore not another laboratory result but a repeatable industrial process that customers can evaluate against conventional fuel economics.
Explore this theme
Jarna Hyvönen, Volare: Why Climate Hardware Startups Need a New Funding Playbook — Jarna Hyvönen, The Table and EUVC · 24 April 2026. A practical look at mixed capital stacks, existing industrial sites and the point at which pilot operations expose real unit economics.
