Solmeyea and the EIC Accelerator: Turning Factory CO2 Into Protein

Solmeyea, a Greek biotech company led by founder and CEO Vasilis Stenos, grows white microalgae in fermenters fed with a glucose substitute made from industrial CO₂, producing MEY, a protein ingredient it says is non-GMO, colourless, tasteless and usable as a binder, stabiliser or egg replacer. Its EIC Accelerator project, C-2C-Protein, "Inspiring CO2 circularity by introducing carbon transformation to our plates", receives an EU contribution of €2,442,728 and ran from September 2024 to August 2026, according to CORDIS. Its objectives included scaling a demonstration fermenter to TRL 8 and producing 22 tonnes of protein a year at demo scale, with regulatory readiness and FSSC 22000 food safety certification.

After the first year, the project report says, Solmeyea ran ten contamination-free 1,200-litre fermentations reaching 50 grams per litre in four days, raised protein content to 43% of biomass, and developed a solvent-free extraction method, according to CORDIS. Its pilot produced "~50 kg/week food-grade protein", about 2.6 tonnes a year, and the CO₂ unit was "ready for dry-runs". In June 2026, with the biomethane developer Cycle0, it launched a pilot in Greece designed to convert 100 tonnes of industrial CO₂ into 15 tonnes of protein a year, according to Cycle0.

Where Solmeyea Stands Now

Solmeyea is at pilot scale. The report says the pilot is scaling to 200 to 400 kg a week and names a commercial demonstration plant as a key need. Its long-term plan, set out with Cycle0, is a factory producing up to 160,000 tonnes of protein a year by 2033. Its funding is mostly grants: EU bodies have provided more than €7 million, according to Cycle0. No equity round or EIC Fund investment has been announced, and its Greek accounts were not accessible in free sources.

The Technology: Algae Fed by Captured Carbon

Solmeyea converts CO₂ into a glucose substitute, then ferments its microalgae in the dark at high density, which the report says gives growth ten times faster than the best light-grown systems. The company claims one kilogram of MEY absorbs about 2.4 kilograms of CO₂ and uses 99% less land and 98% less water than soy. Those are company figures.

What the EIC Award Promised, and What the Record Shows

The project has ended; only the first-year report is public. It shows real progress in fermentation yield, protein content and downstream processing. But the demo-scale output of 22 tonnes a year and integration of the CO₂ unit were not shown within the report period, and the CO₂ pilot that followed is designed for 15 tonnes. Food safety certification and EU regulatory status are not reported.

1. Fermentation scale-upDelivered1,200 L, 50 g/L.
2. CO₂ integrationPilot, 2026Cycle0.
3. 22 t/year proteinNot shown~2.6 t/year.
4. Regulatory readinessUnverifiedNot reported.

The Money

The award was blended finance, but no EIC Fund investment has been made public. The report projects about €190 million in revenue and 170 jobs by 2029, which would require a commercial plant that is not yet financed.

What Cannot Be Checked

Why Europe Should Care

The project report positions MEY against imported soy and links it to the EU's Farm to Fork and Green Deal goals, with emitters supplying the CO₂. The claims are large and the output so far is measured in kilograms a week.

The Verdict

Solmeyea and the EIC have not been asked for comment for this article. It is based entirely on public records and published statements, linked throughout.