Carbios is developing an enzymatic process capable of breaking down PET into monomers to produce plastic of quality equivalent to new. This biorecycling technology positions the company in the “food grade” rPET niche, at a time when European regulations impose thresholds for recycled content in packaging.
The question now revolves around Carbios’ ability to convert this technological advantage into large-scale production, facing competitors who are advancing on other paths of chemical and mechanical recycling.
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PPWR Regulation and Recycled Content Thresholds: The Framework Structuring Demand
The European regulation PPWR (EU) 2025/40, published in the Official Journal on January 22, 2025, comes into effect on August 12, 2026. It sets quantified obligations that transform the recycled plastic market in Europe.
| Type of Packaging | Recycled Content Rate 2030 | Recycled Content Rate 2040 |
|---|---|---|
| Single-use plastic beverage bottles | 30 % | 65 % |
| Food contact-sensitive packaging based on PET (food, beverages) | 30 % | 50 % |
These thresholds create a structural demand for food-grade rPET. Traditional mechanical recycling, which melts and reshapes plastic with progressive degradation, cannot alone cover these volumes, especially for complex streams like polyester textiles or multilayer trays.
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It is in this gap between the available supply in mechanical recycling and the regulatory demand that Carbios’ target market lies. Analyzing the prospects for the startup Carbios involves assessing whether the company can reach industrial scale before other technologies capture this demand.
Longlaville Plant and Carbios’ Industrial Capacity
The construction of the Longlaville plant, with a capacity of 50,000 tons per year, was launched in the first half of 2024. This unit constitutes Carbios’ first industrial site at a commercial scale, following the demonstration phase.
Several agreements for PET waste supply have been secured to cover most of the planned production. Letters of intent (LOIs) have been signed for licensing concessions, and the company is working on finalizing the sale of its production.
The strategy is based on two parallel axes:
- Direct production from Longlaville, aimed at supplying the European market with food-grade rPET
- A technological licensing model, which would allow other manufacturers to deploy the enzymatic process in their own plants, including outside Europe
This licensing approach distinguishes Carbios from many competitors who rely solely on in-house production. It theoretically allows for faster deployment, provided that suitable licensees are found who are willing to invest in dedicated facilities.
Enzymatic Recycling vs. Competing Technologies
Carbios’ positioning is better understood when compared to other recycling pathways targeting the same high-quality rPET market.
Advanced Mechanical Recycling
Mechanical recycling remains the dominant method for PET. Well-established European players have installed capacities far superior to those of Carbios. This sector has the advantage of cost and industrial maturity.
However, it loses quality with each recycling cycle and struggles to process colored, opaque, or textile-derived PET waste. Mechanical recycling cannot produce virgin-quality rPET indefinitely, which limits its ability to meet the 2040 thresholds alone.
Chemical Recycling via Glycolysis or Methanolysis
Several companies are developing chemical depolymerization processes for PET (glycolysis, methanolysis). These technologies, more mature than biorecycling, are progressing rapidly in Europe and Asia. The European Union has also given the green light for chemical recycling for food contact.
The rise of chemical solutions in China represents a direct pressure factor. Significant industrial capacities are being deployed there, with potentially lower production costs.
Specific Advantage of the Enzymatic Process
Carbios’ process operates at low temperature and low pressure, which reduces energy consumption compared to traditional chemical depolymerization. It also accepts more heterogeneous waste streams, particularly polyester textiles, a raw material source that few competing technologies can effectively exploit.
- Lower reaction temperature than glycolysis or methanolysis
- Ability to process polyester textile waste, not just bottles
- Production of PTA and MEG monomers of quality equivalent to petrochemical
- Reduced energy consumption compared to thermal processes
International Expansion and Carbios’ Economic Equation
Carbios has announced ambitions in China, with a project for a 50,000-ton plant dedicated to PET biorecycling. This geographical choice responds to the concentration of global textile production in Asia, but it exposes the company to a dense competitive environment where local chemical recycling players are already well positioned.
The economic equation remains the most scrutinized point of vulnerability by analysts. In the first half of 2024, Carbios showed results characteristic of a pre-commercial phase company, with construction and R&D expenses without significant industrial revenues in sight.
The viability of the model depends on the selling price of food-grade rPET compared to virgin PET derived from petroleum. If oil prices remain low, the cost premium of biorecycling hinders voluntary adoption. The PPWR regulation changes this dynamic by making the incorporation of recycled content mandatory, which supports a price premium for food-grade rPET.
Determinants for Carbios’ Stock Trajectory
Three variables condition Carbios’ ability to meet its objectives in the face of competition.
The first is the commissioning schedule of Longlaville. Any delay reduces the window of competitive advantage before other technologies reach commercial scale. The second variable concerns the effective signing of licensing contracts, which would validate the business model beyond just in-house production.
The third relates to the unit production cost once the plant is operational. The transition from the demonstrator to industrial scale is the decisive test for any breakthrough technology, and the enzymatic yields under real production conditions remain to be confirmed over time.
The European regulatory framework guarantees the existence of a market. The question is no longer whether food-grade rPET will find buyers, but which process will capture the largest share of this mandatory demand by 2030.