Publication details

This report was produced by Polar Associates with Lignin Industries and financed by Vinnova under its call on business models for sustainable forest-based industries.

Polar Associates alone is responsible for the findings and conclusions presented here.

Copyright © 2026 Polar Associates. Some rights reserved. The material featured in this publication is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License. The details of this license may be viewed in full at: https://creativecommons.org/licenses/by-nc-sa/4.0/

Please refer to this report as: Polar Associates (2026). From Reject to Resource: Lignin's Place in a Low-Carbon Future for Europe.

Table of contents

Preface 3 Executive summary 4 1. European plastics' priorities and the need for low-carbon plastics 6 2. The necessary conditions for scaling low-carbon plastics 11 3. Lignin's potential as a low-carbon plastic: Renol case study 14 4. From potential to commercialization 18 End-notes 19 Bibliography 21

Preface

European industrial policy has converged on three priorities: strategic independence, competitiveness, and decarbonization. Plastics exemplify the importance of these priorities well: the sector depends on imported fossil feedstock, carries structurally high energy costs, and faces intensifying competition from lower-cost regions abroad, leading to a structural decline in the European plastics industry. This report asks whether lignin, a wood-processing byproduct Europe already produces at scale, can become part of the answer.

That answer sits within a broader landscape of responses to Europe’s industrial squeeze. Several discussed solutions are defensive: protecting industry through tariffs, subsidies, and other instruments to safeguard capacity and jobs. At Polar Associates, we believe Europe has an opportunity to instead play offense: turning decarbonization into a source of competitiveness. The plastics industry is struggling with the same challenges as the broader European industry, where low-carbon plastics in general, and lignin-based thermoplastics in particular, can be part of that solution.

The optimal technology solution would result in a low-carbon plastic that is of “fossil-equivalent” quality: more sustainable across all dimensions, a drop-in fit for existing processes, and a credible path to cost parity. Today’s dominant bioplastics are in several cases more expensive, and achieve a lower emission factor at the expense of concerning negative impacts on land and water use, biodiversity, and food competition. The rationale for bioplastics is to transition the industry from fossil to biobased carbon, and to reach high-quality segments that recycling technology struggles to supply. Lignin is one such biobased material that can meet the bar of sustainable, technical drop-in and cost parity.

Lignin’s potential is to move up the value curve, from energy to high-value material. Today, the vast majority of lignin in industry is incinerated for energy, and what limited material use exists sits in low-value applications. This report quantifies the opportunity to extract and use more lignin as a material and charts its path up that curve: from today’s use as a filler in plasticizers to a full substitute for fossil plastic.

This report has been written by Polar Associates with the support of Vinnova under its call on business models for sustainable forest-based industries, together with Lignin Industries, Voi and Danfoss. This report serves as an introduction to the potential of low-carbon plastics, with the next phase of work focusing on developing a repeatable playbook for how low-carbon plastics producers can reliably present their materials to be approved in their potential customers' procurement processes and thus more rapidly scale. These conclusions will be published in a separate report.

The supporting organizations and their constituencies do not necessarily endorse all findings or conclusions in this report. All remaining errors and omissions are the responsibility of the authors. Polar Associates is extremely grateful for all the contributions of these organizations and individuals that we have interviewed and collaborated with.

Executive summary

The plastics and petrochemical industry has been an integral part of Europe’s economic strength for the past 70+ years. Much of Europe’s economic growth was built on a manufacturing sector with a well-earned global reputation for quality and innovation, built in no small part by the ability of upstream European materials suppliers to create competitive, high-quality inputs and work in close collaboration to improve final project quality. This success benefitted both the plastics industry and Europe at large: by the close of the 20th century, European plastic producers had a 25% global market share, and the industry provided 1.6 million direct jobs to Europeans.

As the 21st century has matured, Europe’s place in the global economy has shifted: newly industrializing geographies have access to cheaper labor, both North America and the Middle East have access to significantly cheaper fossil feedstocks, and decreasing geopolitical stability has increased import costs and decreased access to export markets. This has led to a weakening of the European position within plastics specifically and, increasingly, in the downstream manufacturing that was for decades Europe’s key competitive advantage.

Europe has articulated a new industrial policy to adapt to these conditions. The policy prioritizes strategic independence, a focus on competitiveness in key industries, and decarbonization. The legacy plastic industry, with its imported fossil feedstock leading to key dependencies on non-European inputs, higher costs than non-European competitors, and emissions incompatible with Europe’s sustainability targets, is not in line with these aims. The repercussions of this have been clear, with 30 million tons of net petrochemical capacity closing in the past four years as global companies withdraw or reprioritize their production in Europe.

In contrast to their fossil predecessors, low-carbon plastics have the potential to support each leg of Europe’s industrial aim. Low-carbon plastics use locally available feedstock (biomass or waste plastics) and avoid dependence on geopolitically fragile fossil fuels. They allow for a continuation of the close collaboration of input and manufacturing, continuing Europe’s strength in high-quality segments, and allowing European companies to take pole position in the new “green” markets being legislated across advanced economies. Finally, they have the potential to significantly reduce emissions in plastics’ production, processing, and end-of-life incineration.

Low-carbon plastics have significant near-term growth potential, with even the most conservative estimates expecting ~5 Mt of additional European usage by 2030. To date, however, uptake has been slow, with use plateauing across the past 3 years despite regulatory acceleration. This is in large part due to the difficulties novel plastic companies have in matching their novel offerings to the particular requirements of the large companies that drive uptake: meeting the specific needs of the sustainability, operations, and procurement functions who determine whether low-carbon plastics get used in downstream products at scale.

Lignin-based thermoplastics are particularly well placed to succeed in this difficult landscape, with a medium-term potential of 7.8 Mt per year across Europe. These plastics have genuine sustainability credentials across both greenhouse gas (GHG) emissions and other key areas (e.g., land use, water stress, biodiversity, etc.); a demonstrated ability to serve as “drop-in” to existing conversion processes; and a pathway to cost competitiveness versus fossil and other low-carbon alternatives.

Lignin-based thermoplastics clear the sustainability, technical, and cost barriers that stall most low-carbon alternatives. The remaining barrier is commercial: converting a structurally ready material into customer-by-customer adoption.

1. European plastics' priorities and the need for low-carbon plastics

The plastics industry was integral to Europe's twentieth-century growth. As Europe rebuilt around manufacturing after the second world war, plastics became a foundational input to industry, and the close collaboration between European materials suppliers and the manufacturers they fed became a competitive strength. That relationship has now inverted. The fossil feedstock European plastics were built on has become expensive and geopolitically exposed, and the sector that once anchored European industry now works against the priorities that define its future: strategic independence, competitiveness, and decarbonization.

Domestically produced plastics still have a role to play in Europe’s industrial future. Low-carbon plastics, made from recycled or biogenic materials, draw on feedstock Europe already controls, sustain the domestic production hubs that give downstream industry supply and expertise needed to remain globally competitive, and reduce emissions. The potential of these low-carbon plastics is largely unrealized today. The supply that exists is concentrated in low-value applications, leaving the high-value industries that drive Europe's competitiveness still dependent on fossil plastics.

1.1 Plastics are a EUR 400bn backbone of the European economy

The plastics industry sits at the heart of Europe’s post-war economic boom. Plastics transformed how Europe built and packaged products, replacing heavier and costlier materials across construction, food, automotive, and healthcare and enabling the consumer economy that defined the postwar decades. Many of the major plastics we still use today (including polyethylene, polypropylene, and PVC) were invented by Europeans as they built the foundations for the last 70+ years of economic prosperity. This was reflected in global reach: European producers amounted to ~1/4 of global market share through the early 2000s¹¹.

Plastics remain a major component of the European economy, supporting ~1.5 million jobs across 51,000 companies with EUR 400bn in turnover¹¹. The plastics these companies produce are in turn a crucial component of products made, sold, and used in Europe: the pipes that make up new buildings, the structures and interiors of our cars, the casing of electronics, and the packaging with which we wrap our production (Exhibit 1).

European plastics producers and the manufacturers who use their output depend on each other. Producers need a strong domestic manufacturing base to sell into, and manufacturers need local, high-quality plastics to build competitive products.

Both producers and manufacturers are now under threat. The European plastic industry’s cost position has deteriorated, with the cheap energy and feedstock that formed the basis of European production now gone and producers facing structurally higher input costs than competitors from the US, Middle East, and now Asia. Margins have compressed, investment has slowed, and plants have begun to close. Simultaneously, climate policy has hardened. Years of targets and voluntary commitments are now becoming binding regulation, with the plastics industry particularly exposed.

This combination has materially weakened the European plastics industry, and with it the downstream manufacturing customers that form the backbone of the European economy.

1.2 Europe's plastic priorities

European energy policy has long leaned on the "trilemma" to frame three competing goals: security of supply, affordability, and sustainability. The frame has been useful because the three sit in genuine tension for most energy sources, forcing structural trade-offs in policy design.

The same frame clarifies the debate around European plastics. Like energy, plastics are a foundational input underpinning the whole economy, and Europe have a set of three similar priorities for them: strategic independence, competitiveness, and decarbonization.

Fossil-based plastics undermine all three: imported feedstock erodes independence, price and supply shocks erode competitiveness, and the fossil input itself drives emissions.

1.2.1 Strategic independence | 80% imported feedstock leaves plastics industry exposed to geopolitics

Strategic independence means essential industries can supply what Europe needs regardless of external pressure. Plastics are essential inputs to these essential industries: sterile medicine, military-grade composites, and the energy system itself all require plastic. However, the feedstock used to create the plastic that then is used to create essential products is almost entirely imported, leaving Europe exposed to upstream geopolitical risk.

At its core, the plastics industry is a machine for taking hydrocarbon inputs and transforming them into higher value polymer outputs. In Europe, the key input feedstocks are crude oil and its derivative naphtha. The European petrochemical industry is also heavily dependent on (fossil) natural gas, occasionally as a feedstock but most often as an energy source for production.

Though the very first European chemicals plants were built around domestically available coal, from the 1950s and 1960s onwards the industry was built to process imported crude. This began with imports from the Middle East and was supplemented by US and Russian crude through time. Natural gas followed a separate path, beginning with domestic production before moving over to Russian pipeline imports and now, post-Ukraine invasion, liquefied natural gas (LNG) imports (Exhibit 2).

The past five years have had two distinct shocks on feedstock: the Russian invasion of Ukraine, which closed off the largest source of Europe’s feedstock, and the US/Israeli attacks on Iran and the resulting disruptions to the Strait of Hormuz, which impacted the global crude price as well as the entire LNG market. These shocks demonstrated the weaknesses of Europe’s current fossil system, including:

As long as Europe's plastics run on imported fossil inputs, their supply and price are decided by events and suppliers beyond Europe's control. Independence cannot be procured; it requires a feedstock Europe can source itself.

1.2.2 Competitiveness | EU petrochemical closures risk widespread deindustrialization

Plastics are economically important for Europe. The European plastics industry employs ~1.5 million people directly¹² and supports another 3-4 million in indirect and induced jobs¹⁰, generally with wages well above national averages. The industry is built around clusters where large petrochemical facilities serve as the hub and ancillary industries integrate around them, sharing waste heat, hydrogen, and byproduct streams, allowing each direct job to support 2–3 more in the surrounding cluster.

European plastics also underpin the competitiveness of European industry more broadly. Despite a broadly worsening global cost position following the rise of Asian manufacturers, Europe supports a strong manufacturing industry in higher-end industries. Europe’s manufacturers deliver high-end products across the automotive, medical devices, electronics, construction, and packaging sectors.

This is accomplished in part due to Europe’s focus on quality and integration. As identified in Draghi's 2024 report on European competitiveness, Europe’s greatest successes (and a precondition for future industrial leadership) are built on integrated industrial bases. This is in line with how plastics have supported the European economy: clusters, allowing close-at-hand polymer supply and innovation capacity spread and shared between producers, converters, and end manufacturers. The failure of European plastics hubs has a downstream competitiveness problem for European industry as a whole.

The plastic bedrock of European industry is eroding. European plastics' share of global production fell from a 28%⁹ peak in the 2002 to 20% in 2014 and 14% in 2022¹¹. Since 2022, closures have outpaced new openings 5:1³, with major petrochemical players exiting Europe altogether (Exhibit 3). Each closure removes a hub and the cluster around it, cascading both job losses and integrations with the downstream industries dependent on this expertise.

The imported crude oil and pipeline gas that European industry scaled on are no longer cost competitive. The US and Middle East produce hydrocarbons closer to source and at lower cost, and Europe has narrowed its tolerance for the CO₂e externalities fossil production carries through the EU Emission Trading System (EU ETS).

European producers no longer have access to cheap hydrocarbons, and nor can they avoid pricing the externalities of fossil production. European-made fossil plastics have no clear road back to competitiveness.

1.2.3 Decarbonization | fossil plastics are incompatible with a net-zero Europe

The EU has committed to reducing CO₂e emissions by 55% from 1990 to 2030 and reaching climate neutrality by 2050 to reduce the risk of catastrophic climate change. Plastics sit squarely within this remit. Thermoplastics account for ~197 Mt CO₂e today (End-note 9), ~5% of EU27+3 emissions (End-note 11), generated both at production (cracking and polymerization) and at end-of-life (incineration of fossil carbon) (Exhibit 4).

The end-of-life share is set to grow. The Landfill Directive caps municipal waste to landfill at 10% by 2035¹⁴, redirecting volumes to incineration; every ton of fossil plastic incinerated emits ~3 tons of fossil CO₂. Without a shift in feedstock, plastics emissions rise during the period EU policy requires them to fall. Without a change in feedstock and significant increase in low-carbon plastic supply, emissions could rise to 206 Mt CO₂e beyond 2035⁸.

1.3 Low-carbon plastics offer a path forward, but today's solutions fall short

Low-carbon plastics serve as an alternative to the plastics industry and offer options to move away from fossil feedstocks. Three categories of low-carbon plastic now exist at commercial or near-commercial scale: bio-based plastics, with biogenic material serving as an input rather than fossil oil or gas; mechanically recycled plastics, in which post-use plastic is sorted, ground, and reprocessed; and chemically recycled plastics, in which post-use plastic is broken down to monomer or feedstock and re-polymerized (Exhibit 5). Despite the theoretical ability to displace virgin fossil plastics, these low-carbon alternatives have not yet scaled to the level Europe's targets require. At just 8% today, low-carbon plastic penetration is lowest in the engineering and specialty segments most crucial to Europe’s industrial competitiveness.

1.3.1 How low-carbon plastics support Europe's priorities

Low-carbon plastics can bring Europe one step closer to solving the region’s plastics priorities across strategic independence, competitiveness and decarbonization.

Strategic independence: Fundamentally, all three low-carbon plastics replace the virgin fossil input into plastics. This can in turn reduce Europe’s oil dependency by over 23 Mt by 2050, representing a > EUR 18bn improvement in trade balance⁸. Furthermore, while Europe is not blessed with significant and easily accessible hydrocarbon stores, it does have abundant forest biomass, agricultural residues, and the world’s most mature waste collection and sorting infrastructure. Building on these endowments replaces structural import dependence on fossil naphtha into an industry built on inputs that Europe controls domestically.

Competitiveness: Europe will not be globally competitive on commodity feedstock cost, whether it be fossil, bio, or circular. The production costs in the US and Middle East are simply too low. However, advantages remain in application engineering, formulation chemistry, and regulatory-aligned product design, where European producers still lead globally. EU policy is simultaneously building the demand side: Carbon Border Adjustment Mechanism (CBAM) levels the playing field against high-carbon imports, recycled content mandates in Packaging and Packaging Waste Regulation (PPWR) and End-of-Life Vehicles (ELV) Directive create demand, and Corporate Sustainability Reporting Directive (CSRD)-driven procurement pulls sustainable inputs through supply chains. Together these create European-led green markets that play to Europe's existing strengths rather than its structural weaknesses, turning the regulatory environment from a cost burden into the primary source of competitive advantage.

This is precisely the strategic logic Draghi identified for European industry overall: stop trying to compete on inputs Europe doesn't have and build competitive advantage on the capabilities, regulatory environment, and demanding customer base that Europe uniquely possesses. Bio-based and circular plastics are how Europe fits this mandate: by preserving domestic polymer production on a foundation that aligns with European resources, capabilities, and policy direction. The strategy keeps the input base that European automotive, medical, packaging, and energy-transition industries need to remain in Europe at all.

Decarbonization: Low-carbon plastics are an essential component of reducing emissions from petrochemicals and downstream products, because they replace the fossil carbon embedded in the polymer itself. Production and processing emissions can be reduced with electrification and efficiency. However, as we showed in above, incineration emissions will remain significant even if production and processing emissions go to net zero. Incineration emissions are set to rise by a further 14 Mt CO₂e as the Landfill Directive diverts landfilled plastic into incineration taking total plastics emissions to 206 Mt CO₂e beyond 2035 (End-note 9). Low-carbon plastics can reduce these emissions materially: bio-based feedstock replaces fossil carbon with biogenic carbon, so end-of-life incineration returns carbon the biosphere recently absorbed instead of fossil CO₂, while mechanical and chemical recycling keep each carbon atom in use across more cycles before it is burned. Together, low-carbon plastics are what separate a sector on route for 206 Mt CO₂e beyond 2035 from one whose emissions fall in step with Europe's climate targets.

1.3.2 Regulation encourages growth, but low-carbon plastics are not yet meeting the need

European regulation has begun to push heavily for the acceleration of low-carbon plastics. Mandated targets are proliferating across the economy: 30% recycled content in packaging by 2030 (up to 35% in priority segments), a proposed ~25% in automotive, and a larger call for widespread adoption via the sustainable carbon cycles communication (End-note 12).

While this push has been successful in limited segments (e.g., PET bottles, trash bags) it has not permeated the economy. The targets set into law imply a recycled packaging plastics market of ~4.3 Mt by 2030 (End-note 13), with the sustainable carbon cycles pushing a long-term market in the realm of 9.4 Mt (End-note 14), covering all aspects of the economy (Exhibit 6).

To date, the supply of sustainable plastics has not shown the ability to meet this potential demand. Low-carbon plastics meet only 13% of European thermoplastics demand (6.2 of 47 Mt), almost entirely (94%) via low-quality mechanical recycling (“downcycling”) which is relevant for only low-quality applications. Meeting Europe’s lofty targets requires annual growth rates of low-carbon plastic of ~15% per year, and current usage has stagnated or declined since 2022.

This is particularly acute in the areas where Europe aims to be most competitive: high-value specialty and engineering plastics that support Europe’s manufacturing industries. These niches use only 8% low-carbon plastics today, versus 14% among commodity plastics. Turning this tide is essential to reconciling European strategic independence, competitiveness, and decarbonization.

The European economy needs competitive industries to provide jobs, growth, and strategic independence in the face of an increasingly uncertain geopolitical climate. High-quality, low-carbon plastics that can support these industries and keep the world from crossing climate change tipping points are a key factor to making this possible. The following chapter walks through what is required for these plastics to reach scale.

2. The necessary conditions for scaling low-carbon plastics

Despite their attractive fundamentals for European industry, low-carbon plastics have struggled to scale because customers' design, production, and procurement processes are all optimized for legacy fossil plastics. Winning adoption means convincing three separate functions inside a potential customer, each with its own incentives and its own test the material must pass. The sustainability function must see a genuine improvement case, operations and the converter must be convinced of technical compatibility, and procurement must see a clear road to cost parity. Each requires its own argument, and failing any one of the three is enough to stop adoption (Exhibit 7).

2.1 Sustainability at scale: GHG reductions with no second-order regressions

Most buyers who turn to low-carbon plastics do so initially for the purpose of decarbonization, led by internal climate commitments and tightening regulatory pressure. These commitments and regulations are transmitted to the organization via the sustainability function, who in turn enforces these commitments through procurement criteria, implemented via a series of comparisons or tests. These serve to disqualify material that doesn’t meet sufficient sustainability standards.

The first test the sustainability function generally applies looks at the magnitude of lifecycle carbon reduction from switching to the low-fossil material. The sustainability function generally has a company-wide target to reduce emissions and must prioritize where the limited sustainability time and financial budget is spent. The priorities are areas which are currently a large share of total emissions. Those areas which only cover small shares of total emissions are unlikely to win attention from the sustainability function, regardless of how much better their material may be on a ton-for-ton basis. Low-carbon plastics thus tend to struggle in gaining a footprint in products where they are only a small share of final product weight and carbon profile.

The second test is whether the emissions reduction comes at the cost of other elements of sustainability. The switch to low-carbon materials is driven by a buyer’s goal to build a more sustainable company, and these companies will not switch to a low-carbon material if using that material leads to significant negative sustainability impact elsewhere. Land use, food competition, water stress, toxicity, eutrophication, and biodiversity loss all sit alongside carbon in the sustainability function's scorecard. A substitution that reduces carbon emissions while pushing another indicator the wrong way is unlikely to be cleared for procurement.

In these assessments, novel materials are compared against both the fossil incumbent material and the next-best technically qualified low-carbon alternative. For instance, mechanical recycling supplies 94% of Europe's low-carbon plastic today. A bio-based plastic that beats fossil but underperforms mechanical recycling on lifecycle carbon is unlikely to win adoption in a use case where mechanically recycled plastic is technically sound.

2.2 Technical compatibility: drops into existing converter lines and meets product specifications

A plastic passes through several hands before it reaches the end customer. Feedstock, whether fossil, biogenic, or recycled, is turned into pellets; the pellets go to converters, who mold and extrude them into components; the components go to product owners, who assemble them into the cars, medical devices, electronics, consumer goods, and packaging that reach the market. A new plastic must satisfy both the converters who process it and the product owners who must include the material in new designs. Ideally, the new material would be “drop-in”, i.e., it runs on the existing line without retooling and meets the certified specifications without requalification. This is a bar few materials clear outright, requiring converters and product owners to consider trade-offs before accepting the material.

Converters run capital-intensive lines tuned over years to specific polymer envelopes, including melt-flow indices, processing temperatures, residence times, and drying conditions. A material that runs outside those envelopes can require recalibration, scrapped batches, and retooling. Each of these is costly, and unattractive to converters with thin margins and high process integration.

Similar reasons for hesitance are found at the product owner. A finished plastic part or component goes through the “qualification”, where it is certified for specific levels of performance, safety, and regulatory compliance. Qualification can range from a relatively quick and light-touch process (for some unregulated products) to an expensive and lengthy effort (for high-end or heavily regulated products such as those designed into vehicles, medical applications, or food contact packaging). Switching to a new polymer (e.g., a low-carbon plastic) can require a full requalification of the entire end product if the low-carbon material differs too much from the fossil plastic it is replacing. Doing so is an extra cost for the converter or manufacturer to bear, and must be weighed against the other value that the low-carbon plastic brings.

Introducing new materials can bring significant additional financial and time cost onto product owners and converters. Successfully scaling low-carbon plastics, particularly in high-end and regulated end-uses, will require these plastics to be as close to drop-in as possible: usable on the existing converter line and able to meet the existing product specifications with adjustments small enough that the cost of qualifying stays inside routine production tolerance.

2.3 Cost parity: matching fossil plastic on a true-cost basis

The buy decision generally comes down to the sourcing or procurement function, whose job is to secure the polymer the company needs at the lowest defensible total cost. What "total cost" means is not always the polymer price: depending on the product, sourcing compares either the price per kilogram of polymer or the all-in cost of the finished component. Sourcing measures this against the fossil incumbent, because procurement budgets are generally sized against fossil costs; the comparison against other low-carbon options sits with the sustainability function. A low-carbon plastic passes this test either by matching the fossil cost on that basis today, or by presenting a credible path to matching it within a horizon the buyer accepts.

A material that cannot provide this pathway is unlikely to be purchased, regardless of performance on sustainability and technical fit. Organizations develop procurement departments to hold down cost, and absent a deliberate mechanism (and strong push) from company leadership, procurement budgets are unable to approve a structural premium.

Which “total cost” basis applies depends on how much of the part's cost is the polymer itself. In commodity applications like bottles, films, and packaging, the polymer is the dominant material cost, so sourcing compares polymer prices head-to-head per kilogram. In engineering applications, where the polymer is molded or extruded into a part for a vehicle, medical device, or consumer electronic, it is only one input among several. The finished cost also depends on how much material the part requires, how long the molding cycle runs, how much energy the press draws, and what additive or finishing steps follow. Here sourcing judges the all-in delivered cost of the finished part, not the polymer price alone.

The component basis is more forgiving than the per-kilogram one, because a higher polymer price can be offset by savings on the other inputs. A material that costs 25% more per kilogram can still reach parity on the finished part if it lets the part use 15% less material, shaves 10% off the molding cycle, or removes a finishing step. Those savings must be verified in the buyer's own process and validated by the converter and product owner before sourcing will act on them.

A material that is not at cost parity today can still be approved for purchase, but only with a credible cost trajectory and a defined payer for the gap in the meantime. A credible trajectory is usually scale-driven, resting on engineering and supply-chain economics the buyer's own technical teams can check against comparable buildouts. The interim payer can be the sustainability function funding a transition premium across budgets, committing volume against a contracted price decline, or a public co-investor absorbing first-of-a-kind capital cost. What sourcing will not do is carry an open-ended premium against its operating budget on the assumption that costs will fall someday.

3. Lignin's potential as a low-carbon plastic: Renol case study

Lignin is one of the most abundant organic materials on earth, produced across Europe at industrial scale as a byproduct of paper and biofuel production. Unlike the bio-based feedstocks that dominate the bioplastic market today (e.g., sugarcane, corn starch, and castor oil), it does not compete for farmland and needs no crop grown to produce it. There is 4.6 Mt technically available for material use today, making it a credible alternative to supply the high-value engineering plastics where low-carbon supply is thinnest.

Almost all available lignin is burned for energy. Redirecting lignin into materials can turn a low-value energy stream into high-value plastic, leading to 18.2 Mt CO₂e of avoided emissions and EUR 2.1bn of new value to European industry each year. This chapter examines that opportunity through Lignin Industries' Renol product, a lignin-based thermoplastic masterbatch and the leading commercial route to lignin in engineering polymers.

3.1 Overview of lignin's use today

Lignin is the structural polymer that bonds cellulose fibers in plant cell walls and is after cellulose the most abundant biopolymer on Earth. In short, lignin is what makes wood “woody” and rigid. In an industrial setting, lignin is most associated with pulp and paper making, with a major focus of the industry being the removal of lignin from woody biomass. Today, European pulp mills and biorefineries produce around 17 Mt of lignin annually as a byproduct of paper production, dissolving pulp manufacturing, and second-generation biofuel production.

The vast majority of lignin produced in Europe is burned inside pulp mills for energy. Despite the delicate balance of paper mill’s energy and chemical balances, roughly 4.1 Mt of kraft lignin per year (End-note 4) can be practically diverted to material use without disrupting the processes or economics, with the exact amount dependent on a given mill’s balance of steam capacity, lignin-separation equipment, and kraft pulping chemistry.

Today's commercial lignin material market is around 500 kt in Europe, concentrated in low-value applications including phenolic resin extenders, concrete admixtures, dispersants, and soil amendments (Exhibit 9). These uses absorb commodity-grade kraft lignin but none of them are particularly high-value applications. The opportunity for lignin-based thermoplastics is to move lignin up the value curve into engineering and specialty plastics and use a locally available and sustainable feedstock to support European competitiveness and industrial strength.

3.2 Sustainability: lignin is a byproduct with a GHG advantage and no second-order trade-offs

As a byproduct of pulping and biorefinery processes, redirecting lignin to plastics draws on no additional land, food, or water and displaces the fossil carbon that would otherwise enter the polymer. Against the fossil incumbent, lignin-based thermoplastics deliver roughly 4.5 kg CO₂e per kg of polymer (End-note 1) in lifecycle emission reduction with no offsetting regression on land use, food competition, water stress, toxicity, eutrophication, or biodiversity loss.

Lignin-based thermoplastics also hold up against other low-carbon plastic alternatives. Mechanical recycling supplies 94% of Europe's low-carbon plastic today but has not penetrated engineering applications at scale. Chemical recycling can reach engineering specifications mechanical recycling typically cannot, but the dominant commercial route (pyrolysis followed by re-polymerization through the steam cracker) is energy-intensive enough that lifecycle assessments are not competitive with lignin-based thermoplastics.

Other bio-based plastics can theoretically address the same engineering applications while maintaining a strong emissions position. However, the leading commercial routes (e.g., bio-polyethylene from sugarcane, polylactic acid from corn starch, bio-polyamides from castor oil) depend on feedstocks grown on dedicated agricultural acreage, which moves the sustainability trade-off from carbon onto land, food, or water use. Lignin's byproduct origin avoids this trade-off entirely. Among bio-based routes that could plausibly compete for the same engineering applications, lignin-based thermoplastics can win on carbon without giving back ground elsewhere on the sustainability scorecard.

3.3 Technical: lignin-based thermoplastics can drop into existing converter lines with minor process adjustments

Lignin-based thermoplastics are capable of meeting the relevant converter and product technical standards of high performance industrial and specialty polymers. In the case of Renol, Lignin Industries' lignin-based thermoplastic, this is provided to converters as a masterbatch that blends with virgin or recycled fossil polymers on the existing line. When implemented successfully, this requires no retooling from the converter nor recertification from the product owner.

However, the process does still have limitations, with some changes (e.g., heat, runtime) needed from the converter to account for lignin’s slightly different melt behavior. Similarly, these differences lead to a blend ceiling for lignin, generally a maximum of 30-60% depending on application. Additionally, lignin is brown, which makes it impossible to technically address applications that require transparent or bright and light color applications.

Despite this, lignin-based thermoplastics, and Renol specifically, are able to technically address roughly 7.8 Mt of plastics use in Europe (End-note 5).

3.4 Cost: lignin-based thermoplastics have line-of-sight on cost parity to total cost of ownership equality with virgin polymers

Lignin-based thermoplastics are not at cost parity with fossil polymers today. Lignin Industries has produced less than 100 tons of Renol cumulatively since 2020, and at pilot volume the per-kilogram cost sits above fossil polymer because fixed costs spread across a small output base and the process has not reached the repetition that drives variable-cost reduction.

Scaling to a few hundred tons per year, roughly an order of magnitude above today's cumulative production, delivers a 30 to 40% reduction in unit cost and brings the lignin-based thermoplastic into range of parity at current fossil prices. The reduction comes from three well-known mechanisms: fixed costs are spread across a much larger output base, delivery costs decrease with order volumes, and the process itself moves down a learning curve as it runs more often, picking up the variable-cost gains that come from repetition on an industrial scale.

The cost trajectory for lignin-based thermoplastics holds up, but only conditionally. As we set out earlier, a credible trajectory becomes a real cost answer only when paired with a defined payer for the interim gap between today's cost and parity. Sourcing will not absorb a structural premium against its operating budget on the assumption that costs will fall. This is the recurring failure mode for low-carbon materials at this stage of scale-up: the trajectory exists, the volume needed is reachable, the technology is bankable, and yet the gap between today's cost and tomorrow's parity has no structural payer.

3.5 Lignin's potential as a low-carbon material feedstock today and in the future

Today, around 500 kt of European lignin displace fossil materials each year, avoiding roughly 430 kt CO₂e – mostly as lignosulfonates replacing plasticizers, at a ~0.7 kg/kg CO₂e benefit. Production facilities using Kraft and Hydrolysis technologies have been announced, with the potential to increase available lignin volumes by 150kt and lead to a total avoided emissions of ~1100 kt CO₂e by 2030 (End-note 2). Lignin has a theoretical potential of ~18.2 Mt CO₂e in avoided emissions if Europe’s full technically extractable volume was used as material (Exhibit 11).

European kraft mills hold roughly 4.1 Mt of technically extractable (i.e., not critical for the mill’s energy balance)⁶ lignin currently burned for energy. However, capturing these volumes would require mills to install lignin precipitation technology (e.g., LignoBoost, LignaRec), which requires both capital and site-specific retrofitting. Mills have begun this process, with Södra's Mönsterås site is planning to have a kraft lignin facility, using ANDRITZ's LignaRec process, up and running by 2027².

The full potential of scaling lignin extraction is a challenge with a significant upside. Routing the extractable lignin into material applications would mean not just avoided emission potential of 18.2 Mt CO₂e annually (Exhibit 11), but also a notable value uplift. Lignin sold as a material earns roughly 800 EUR/t against 158 EUR/t when sold as energy feedstock, meaning diverting lignin to material uses leads to additional value of about EUR 2.1bn per year (End-note 3) on extractable volumes at full deployment (Exhibit 12).

Lignin-based thermoplastics will not replace fossil plastics in Europe on their own. The extractable supply is a fraction of the fossil base and masterbatch blend-in ratios cap how much of any given product can be lignin using current technologies, but within that ceiling lignin-based thermoplastics clear the three structural barriers from chapter 2: sustainability at scale, technical compatibility, and cost parity at scale.

From potential to commercialization

Clearing these barriers is necessary, but not sufficient. Today's lignin material use remains concentrated in lower-value applications such as plasticizers, resins, and dispersants and has yet to penetrate the higher-value engineering and specialty-plastics volumes that are technically addressable and contribute most strongly to Europe’s industrial aims. The same pattern holds across low-carbon plastics more broadly: a credible technical path to higher volumes exists, but commercial penetration has not followed.

This is a commercialization question: low-carbon plastics have not been able to capture a sufficient share of what should be an attractive addressable market. Producers have struggled to successfully communicate the value of their products to the relevant customer functions.

In the course of this report, we have worked together with both sustainable plastic manufacturers and ambitious (potential) customers to better understand this dynamic. Our next report will contain a synthesis of this research, alongside a replicable methodology for how low-carbon plastic manufacturers can better articulate their strengths and bring their products deeper into the market. Our aim is to take Europe one step closer to solving the trilemma of strategic independence, competitiveness, and decarbonization.

End-notes

The following notes document the data sources, methodology and key assumptions behind the report’s principal quantitative analyses.

1. GHG emission factor. Each ton of lignin used as material is credited with ~4.5 tCO₂e of avoided emissions: 5.1 tCO₂e/t for the fossil PP/PE it displaces (cradle-to-grave, including end-of-life incineration) less ~0.6 tCO₂e/t for producing the lignin (cradle-to-gate), on a 1:1 mass-substitution basis (GWP100). By route the displaced-emissions factor is ~4.1 (kraft), ~3.1 (organosolv) and ~0.74 (lignosulfonate) tCO₂e/t. Lignosulfonate lower delta is due to plasticizers low emission factor.

2. Avoided emissions (gross basis). Figures are gross: the emissions avoided by incinerating plastic to displace fossil fuels are excluded. From a waste-to-energy plant’s perspective these remain real, physical emissions, and, consistent with the principle that one fossil fuel earns no avoided-emissions credit for displacing another (e.g. natural gas versus coal), displacing fossil energy through plastic incineration is not credited. If we would credit, the incineration emissions would decrease by 25 Mt CO₂e. Current material use avoids ~0.43 Mt CO₂e per year, rising to ~1.1 Mt by 2030 and ~18.2 Mt at full potential (note 10); emissions are counted per ton of lignin (note 6). As kraft and hydrolysis lignin volumes increase to 2030, these are assumed to go into high value applications e.g., thermoplastics, meaning a disproportionate increase in avoided emissions to 2030 compared to today. The fossil-displacement side is held constant across routes at ~5.1 tCO₂e/t of fossil PP/PE avoided (cradle-to-grave, including end-of-life incineration), sourced from Tenhunen-Lunkka et al. (2022), built on PlasticsEurope eco-profiles and ecoinvent (note 9). What varies by route is the lignin production footprint (note 7): ~0.4 tCO₂e/t for kraft (LignoBoost, mass allocation), ~0.26 for lignosulfonate and ~0.6 for hydrolysis lignin, giving net factors of ~4.1 (kraft), ~3.1 (organosolv) and ~0.74 (lignosulfonate) tCO₂e/t (note 1). Today's ~500 kt of material use is almost entirely lignosulfonate displacing plasticizers, at the lowest of the three net factors; growth to 2030 is assumed to come from kraft and hydrolysis lignin entering thermoplastics, which carry a materially higher net factor; and full potential assumes essentially all technically extractable lignin, predominantly kraft, is used this way. Because the assumed route mix shifts toward the higher-factor kraft material as volume scales, the blended avoided-emissions rate per ton of lignin rises with volume, which is what produces the non-linear curve. The “Full potential” case is not seen as a feasible near-term future, simply used to illustrate the potential of lignin as a material.

3. Value uplift. Lignin sold for energy is worth ~158 EUR/t (~27 MJ/kg at ~70% boiler efficiency and 30 EUR/MWh); as a bioplastic material it is worth ~800 EUR/t for high-purity grades. This is the input the result is most sensitive to. Per Exhibit 12, moving lignin from energy to material raises the total value of Europe’s lignin from ~EUR 3.0bn today to ~EUR 5.1bn at full potential, a net uplift of ~EUR 2.1bn per year. We assume 100% conversion rate from lignin feedstock to thermoplastic based on Lignin Industries process. At lower-purity grades, yields would likely be lower.

4. Lignin supply and extractability. Of ~17 Mt theoretical EU27+3 lignin supply, ~12.4 Mt is needed to power pulp and paper operations. Lignin-precipitation technologies (e.g. LignoBoost, LignaRec) can extract ~25% without disrupting that energy balance, i.e. ~4.1 Mt of kraft lignin. After the largest kraft lignin extraction facility shut down in 2023 (Sunila, Stora Enso), only pilot volumes remain in Europe (Exhibit 8).

5. Addressable plastics market. The ~7.8 Mt addressable volume is EU27+3 thermoplastic demand adjusted for the polymers and processing routes that lignin-PP blends can technically address; it is screened on polymer and process that Lignin Industries can produce at the time of writing, not by end-use application (Exhibit 10).

6. Substitution and blend loading. Avoided emissions and value are counted per ton of lignin: one ton of lignin displaces one ton of fossil plastic. Because lignin is blended below 100% (Renol’s ceiling is ~60% lignin), delivering one ton of lignin requires ~1.7 tons of lignin-thermoplastic product at that ceiling, and proportionally more at lower loadings. This governs the product volume required, not the per-ton benefit.

7. Lignin production footprint. The cradle-to-gate factor uses per-type point values: ~0.4 tCO₂e/t for kraft (LignoBoost, mass allocation), ~0.26 for lignosulfonate and ~0.6 for hydrolysis lignin. Switching to economic allocation or treating lignin as the main product raises these materially (the range carried is 0.1–2.7 tCO₂e/t). The mill energy that must be replaced when lignin is diverted from the recovery boiler is treated as a sensitivity within that range, not booked as a separate term on the headline factor.

8. Biogenic carbon. Lignin’s biogenic carbon (~2.2 tCO₂e/t) is credited only under a durable-storage accounting variant; it is not credited on the gross/incineration basis used for the headline figures, to avoid double-counting.

9. Plastics emissions baseline. Production emission factors are from Tenhunen-Lunkka et al. (2022), built on PlasticsEurope eco-profiles and ecoinvent; incineration emissions are stoichiometric (carbon content × 44/12). The incineration share is the residual after recycling and landfill: as recycling rises from ~15% toward ~25% by 2035 and landfill falls from ~31% to ≤10%, incineration climbs from ~54% (2022) to ~65% (2035) of end-of-life plastics. This is the main driver of the rising emissions profile. A kappa factor (end-of-life to demand, 0.87→0.95) scales incineration volumes. All figures are gross. The 15% recycling share of plastics in Europe is based on Material Economics’ report “Europe’s Missing Plastics.”. The leading rationale is that landfill phaseout will disproportionally affect countries with poor recycling infrastructure, which we believe will cause a larger share of the diverted landfill into incineration.

10. Full-potential volume. The ~18.2 Mt full-potential avoided emissions assumes the full material-extractable lignin supply (~4.25 Mt across newly extractable kraft, already-extracted kraft and other lignin types) is used in material applications, on the gross/incineration basis. Placing 4.25 Mt of lignin implies serving essentially the entire ~7.8 Mt addressable market at a high average lignin loading (~50–60%, near Renol’s ceiling); at a more typical 20–30% loading the same market would absorb ~1.5–2.3 Mt of lignin, or ~6–10 Mt CO₂e. The 18.2 Mt is therefore a technical ceiling rather than an expected-adoption figure.

11. Plastics emissions figure, basis. Figures draw on Eurostat (2025) EU27+3 total greenhouse gas emissions data and a Polar Associates analysis of AMI International production data and Plastics Europe emission factors, giving the ~170 Mt CO₂e plastics figure.

12. Regulatory basis for packaging and automotive figures. Packaging figures reference Regulation (EU) 2025/40 (PPWR), Article 7 — minimum post-consumer recycled content from 1 January 2030 (35% for general plastic packaging; 30% for contact-sensitive PET; 10% for contact-sensitive non-PET). The automotive figure refers to the proposed End-of-Life Vehicles Regulation (COM(2023) 451), which remains under negotiation and is not yet adopted. “Sustainable carbon cycles” refers to Commission Communication COM(2021) 800.

13. Recycled packaging volume, basis. The ~4.3 Mt 2030 projection is a Polar Associates internal model based on AMI data, built to be consistent with PPWR (Regulation (EU) 2025/40) Article 7 recycled-content minimums — it is an estimate, not a figure taken directly from a published source.

14. Long-term carbon-cycles market, basis. The ~9.4 Mt figure is the long-term addressable market under the EU Sustainable Carbon Cycles Communication (COM(2021) 800), which targets 20% non-fossil carbon in chemicals and plastics by 2030, applied to the ~47 Mt European thermoplastics market (≈20% × 47 Mt).

Bibliography

Reports and data sources

Legislation and regulatory instruments

Disclaimer

Polar Associates prepared this report for Vinnova. It reflects our analysis and judgment as of July 2026 and draws on data from public sources, third-party models, and interviews that we believe to be reliable but have not independently audited. The report is intended for general information and to inform discussion. It is not investment, legal, or commercial advice, and it does not account for the specific circumstances of any individual company. The scenarios and forward-looking estimates it contains are illustrative, not predictions. Polar Associates accepts no liability for any decision taken, or not taken, on the basis of this report.