A Spanish Startup Just Chose Portugal for a $136 Million Green Chemical Plant — Here's Why It Matters

Jan de Vries · 2026-07-22

Seville's Catalyxx, a company that turns bioethanol into replacements for fossil-based industrial chemicals, just picked Sines, Portugal, as the home for its $136 million commercial-scale production facility. That's around €120 million, but for our U.S. readers, we're talking about a massive investment in sustainable chemistry. The move signals something bigger: Europe is serious about scaling up bio-based alternatives to petrochemicals. And Catalyxx's choice of Portugal over its home country Spain is a story in itself. ### The Money Behind the Move This plant isn't being built on hope alone. Catalyxx is backing it with a mix of private cash and public grants. The company recently snagged $22.7 million (€20 million) from the Circular Bio-based Europe Joint Undertaking, a public-private partnership that's pushing Europe's circular bio-economy. That funding is earmarked for the Sines project, which aims to cut emissions and shore up European chemical supply chains. But that's just the latest piece. The announcement follows a $3.4 million (€3 million) round for Catalyxx's Seville tech center and a pre-approval for $42 million (€37 million) from the European Investment Bank for an earlier plant proposed in France. So this isn't a one-off bet — it's the result of years of staged financing and demo-scale work. ### Why Portugal Won CEO Joaquín Alarcón didn't hold back his enthusiasm. "We are thrilled to be building our first commercial-scale plant in Portugal," he said, thanking the Portuguese Trade and Investment Agency (AICEP), local authorities, and the Port of Sines. The project, he added, will "accelerate the defossilization of the chemical industry" and "position Portugal as a European leader in sustainable industrial innovation." Portugal's pitch? A strategic port location, supportive regulators, and a growing reputation as a clean-tech hub. For a company that needs to move raw materials and finished chemicals efficiently, Sines — with its deep-water port — is a natural fit. ### The Technology: Drop-In Chemicals Catalyxx's tech converts bioethanol into what it calls "drop-in" chemicals — butanol, hexanol, and octanol. These are chemically identical to their fossil-based cousins, which means manufacturers can use them in existing equipment without retooling or reformulating their products. That's a big deal. In the chemical industry, switching to a new input often means ripping out pipelines, retraining crews, and re-certifying products. Catalyxx eliminates that friction. Their chemicals are designed to be cost-competitive and carbon-negative, giving industrial customers a way to cut emissions without breaking their supply chains. ### Where These Chemicals Go These aren't exotic compounds. Butanol, hexanol, and octanol show up in: - Coatings and paints - Adhesives and sealants - Plastics and polymers - Solvents and cleaning products - Personal care items like lotions and perfumes So when you paint your house, glue a broken vase, or slap on sunscreen, there's a good chance you're using a chemical that could someday come from Catalyxx's plant instead of an oil refinery. ### The Bigger Picture: Europe's Bio-Chemical Boom Catalyxx's project is part of a broader — though still selective — wave of European financing into bio-based chemicals and industrial biomanufacturing in 2026. EU-Startups tracked about $66 million (€58 million) across eight other deals, including: - Octarine Bio's fermentation-derived pigments - Seprify's cellulose-based industrial ingredients - D-CRBN's circular carbon molecules - Foamlab's bacterial-cellulose materials Add Catalyxx's $22.7 million grant, and the total hits roughly $89 million (€78.3 million). That's real money flowing into a sector that could reshape how we make everything from plastics to perfumes. ### The Team Behind It Catalyxx was founded in 2017 by Joaquín Alarcón de la Lastra Romero, a former Abengoa executive with over 20 years in bioenergy. The company still runs its R&D and demo plant in La Rinconada, near Seville, where it's also researching sustainable aviation fuels (SAF). So the Portugal plant isn't a leap into the unknown — it's the next step after years of proving the technology works. ### What It Means for U.S. Readers For American investors, manufacturers, and sustainability pros, Catalyxx's story is worth watching. Europe is building infrastructure for a post-petrochemical economy, and the drop-in approach lowers the barrier for adoption. If Catalyxx succeeds, it could set a template for similar projects in the U.S., where bio-based chemicals are also gaining traction. And for anyone tracking where the smart money is going in clean tech: Portugal just made a strong play. The $136 million plant in Sines could be the first of many.