Chapter 6: Technology-Intensive Industries: Eco-Innovation and the Green Premium

On the third floor of a building in the Pearl River Delta, a team of engineers cycles coin cells to failure. The work is unglamorous: slurry coated onto aluminum foil, dried, calendered, assembled, tested, discarded. What distinguishes this lab from a hundred others is the whiteboard beside the test bench. Someone has drawn two columns. The left one tracks cost per kilowatt-hour. The right one tracks carbon per kilowatt-hour. Over three years, the left column has fallen by roughly 40 percent. The right column has fallen further.

The engineers are battery people, not environmentalists. But the carbon column is not decoration. It determines whether their cells qualify for the European market, whether automakers under pressure to decarbonize their supply chains will pay a premium, and whether the plant that buys the cells can claim the credentials its own customers demand. Cost and carbon are solved on the same line, by the same people, with the same tools.

Chapters 4 and 5 examined industries where green governance was largely a matter of compliance—where the firm responded to standards set elsewhere and absorbed the cost. The battery lab suggests something different. Here the firm is not asking how to meet the standard. It is asking how to build a product the standard has not yet anticipated. That shift, from compliance to capability, is the subject of this chapter.

6.1 Eco-Innovation Drivers and Constraints: Financial, Policy and Market Determinants

6.1.1 Defining eco-innovation: beyond the compliance frame

The Oslo Manual (2005) defines innovation as the implementation of a new or significantly improved product, process, organizational method, or marketing method. Eco-innovation adds an environmental performance criterion: the innovation must reduce environmental impact relative to alternatives, whether through lower emissions, less material use, greater energy efficiency, or improved recyclability. The MEI project (Measuring Eco-Innovations, 2008) refined the definition to include both intention and outcome—a distinction that matters because firms often pursue environmental improvements for non-environmental reasons.

Klewitz and Hansen (2014), in their systematic review of sustainability-oriented innovation in small and medium enterprises, sort the literature into process innovation (cleaner production, energy efficiency), product innovation (eco-design, new materials), and organizational innovation (new business models, supply chain collaboration). The categories overlap in practice. A new battery cathode is a product innovation that requires process innovation to manufacture at scale and organizational innovation to source precursor materials responsibly.

What separates eco-innovation in technology-intensive industries from the compliance-driven green governance of labor-intensive sectors? Not the presence of regulation—both sectors face environmental rules. The difference is where the innovation impulse originates. In furniture, as Chapter 5 showed, the firm innovates when the standard changes or the buyer demands it. The innovation is reactive, and its scope is bounded by the compliance requirement. In batteries, semiconductors, or industrial equipment, the firm innovates because the innovation creates a market position that did not exist before. Regulation may accelerate the process. It does not define its boundaries.

Rennings (1998) argued that environmental innovation carries a "double externality": the knowledge spillovers that discourage all innovation are compounded by environmental spillovers that prevent the innovating firm from capturing the full social benefit of its investment. This is why eco-innovation is often underprovided by markets, and why policy matters. But the double externality does not tell us whether a firm will respond to policy by complying minimally or by innovating strategically. That depends on capabilities, market structure, and the expected return on innovation.

Porter and van der Linde (1995) offered the most influential answer: well-designed environmental regulation can trigger innovation that offsets compliance costs and enhances competitiveness. The Porter Hypothesis has generated a large empirical literature with mixed results. Roediger-Schluga (2003), examining Austrian VOC emission standards, found some evidence of innovation response but questioned whether it was large enough to offset costs. The hypothesis is not wrong so much as incomplete. It treats regulation as the primary driver and innovation as the response. In technology-intensive industries, the causality often runs the other way: firms innovate for market reasons, and regulation ratifies or accelerates the innovation.

The evolutionary tradition offers a more useful frame. Nelson and Winter (1982) argued that firms are bounded by their routines and that innovation is a search process shaped by accumulated knowledge. Applied to eco-innovation, this suggests that a firm's existing technological trajectory determines what green innovations it can pursue. A battery manufacturer with deep electrochemistry knowledge can innovate in cathode materials. A furniture manufacturer with wood-processing expertise can innovate in low-formaldehyde adhesives but cannot easily pivot to battery production. The direction of eco-innovation is path-dependent.

Path dependence has implications for the green premium. If eco-innovation builds on existing capabilities, the firms most likely to capture the premium are those with the deepest technological foundations in their sector—not necessarily the largest firms, but the ones with the most relevant knowledge. The premium rewards competence, not just compliance.

6.1.2 Financial determinants: the cost of capital and the patience of investment

Green innovation typically has longer payback periods than conventional innovation because the environmental benefit is often public while the cost is private. A firm that invests in a process reducing emissions by 30 percent may wait five to seven years to recover the investment through energy savings alone. If the process also improves product performance or opens new markets, the payback is faster. If it does not, the investment is a bet on future carbon prices or future regulation.

The cost of capital matters enormously here. Chinese manufacturing firms face a bifurcated financial system. Large, state-connected enterprises can borrow at rates close to the benchmark lending rate. Small and medium enterprises, especially private ones, often pay a significant premium—sometimes two to three times the benchmark rate. The result is that the firms with the greatest need for green investment—those with older, less efficient plants—often face the highest cost of capital. This is the inverse of what an efficient green transition would require.

Przychodzen and Przychodzen (2015), studying publicly traded companies in Poland and Hungary, found that eco-innovation was positively associated with financial performance, but that the relationship was stronger for firms with better access to capital. The finding is intuitive: green innovation is an investment, and firms that cannot finance investment cannot innovate. The Chinese record points the same way. The firms that have led in green technology—BYD in batteries, LONGi in solar wafers, CATL in battery systems—are not the smallest or the most capital-constrained. They could raise large amounts of capital at reasonable cost and could afford to wait for returns.

Capital alone does not explain the pattern. Consider solar. Chinese firms came to dominate global solar manufacturing not because they had cheaper capital than their German or Japanese competitors—they did not, at least initially—but because they combined capital with scale, vertical integration, and a willingness to accept lower margins during the growth phase. The green premium in solar was not captured through higher prices. It was captured through cost leadership that made the green product the cheapest option. That is a different model of premium capture, and technology-intensive Chinese firms have used it repeatedly.

The financial determinant also operates through the structure of the balance sheet. Firms with large fixed assets in carbon-intensive processes face stranded asset risk that discourages green innovation. Why invest in a new process when the old plant is not yet paid off? This is the sunk-cost barrier to green transition, and it is strongest in capital-intensive industries (Chapter 7 takes this up in detail). In technology-intensive industries, where fixed assets are smaller relative to revenue and product cycles are shorter, the barrier is lower. A battery firm can retool a line in months. A steel mill cannot.

6.1.3 Policy determinants: regulation, subsidy, and the signaling effect

Policy affects eco-innovation through three channels: regulation sets the floor, subsidy lowers the cost, and signaling coordinates expectations. The three are often bundled, but their effects are distinct.

Regulation is the most studied channel. The Porter Hypothesis predicts that stringent regulation will trigger innovation. The empirical record is mixed, but the mechanism is clear: regulation raises the cost of the status quo, making innovation relatively more attractive. The effect is strongest when regulation is flexible (allowing firms to choose how to comply) and when it is announced in advance (giving firms time to innovate). Norberg-Bohm (1999), comparing alternative policy mechanisms for stimulating green technological innovation, found that performance standards and tradable permits tended to induce more innovation than technology mandates, because they left room for firms to find cheaper ways to comply.

China's environmental regulation has followed this logic in some sectors and not in others. The dual carbon goals, announced in 2020, set a long-term signal: the economy will decarbonize, and firms that position for that future will be rewarded. The signal is deliberately broad. It does not specify which technologies will be favored or which sectors will bear the largest adjustment costs. This ambiguity is both a strength and a weakness. It allows firms to experiment, but it also creates uncertainty that can delay investment.

Subsidy is the second channel. China has used subsidies extensively in solar, batteries, and electric vehicles. The subsidies have been criticized for creating overcapacity and for rewarding production rather than innovation. They have also accelerated learning curves. Module prices fell by more than 90 percent between 2010 and 2020, driven by a combination of scale, learning, and subsidy-supported demand. The subsidy did not create the innovation, but it created the market that made the innovation profitable.

Signaling is the least studied channel and perhaps the most important for technology-intensive industries. When the government announces a target—carbon neutrality by 2060, for example—it changes the expectations of firms, investors, and consumers. Firms that believe the target will be enforced invest in green technology. Investors who believe the same allocate capital to green firms. The signal coordinates behavior without mandating it. The risk is that the signal is not credible, or that it is reversed. Firms that invested on the assumption of a carbon price may find themselves exposed if the price does not materialize.

Kern (2012), using the multi-level perspective on socio-technical transitions, argues that policy signals work best when embedded in a broader transition pathway—when regulation, infrastructure, and consumer behavior all point in the same direction. A carbon price alone will not transform an industry if the infrastructure for low-carbon production does not exist. A subsidy alone will not create a market if consumers are not ready to buy. The Chinese advantage in some technology-intensive sectors has been the alignment of these factors: the government signals, the infrastructure follows, and the market grows.

6.1.4 Market determinants: demand pull and the willingness to pay

Eco-innovation is more likely when customers will pay for environmental performance. The willingness to pay varies by market segment, by product category, and by the visibility of the environmental attribute.

In business-to-business markets, the willingness to pay is often driven by the customer's own regulatory or reputational constraints. An automaker that must meet fleet emissions standards will pay a premium for batteries with lower embodied carbon. An electronics brand that has pledged to reduce supply chain emissions will pay more for components from suppliers with verified carbon footprints. The premium is not a consumer preference; it is a cost of compliance passed down the chain.

In consumer markets, the willingness to pay is more variable. Surveys consistently show that consumers say they will pay more for green products; actual purchase behavior reveals a smaller premium. The gap between stated and revealed preference is one of the most robust findings in environmental economics. The premium that firms can actually capture is therefore smaller than the surveys suggest, and it is concentrated in product categories where the environmental attribute is visible and credible—organic food, energy-efficient appliances, electric vehicles.

For technology-intensive Chinese firms, the most important market pull has come from export markets. European and North American customers have been willing to pay a premium for green products, and the premium has been large enough to justify investment. The European Union's carbon border adjustment mechanism (CBAM), phased in from 2023, has reinforced this: exporters to the EU must now account for the carbon content of their products, and products with lower carbon content face lower border charges. The mechanism converts the green premium from a market preference into a regulatory necessity.

The domestic market has been slower to reward green products. Chinese consumers are price-sensitive, and the environmental attribute is often not visible. The government has tried to create demand through procurement policies and subsidies, with uneven results. The electric vehicle market, for example, grew rapidly only when subsidies and license-plate restrictions made electric vehicles cost-competitive with internal combustion engines. The green attribute was not enough on its own.

6.1.5 Constraints: the barriers that persist

If the drivers are financial capability, policy signals, and market pull, the constraints are their mirror image: capital scarcity, policy uncertainty, and market failure.

Capital scarcity is the most straightforward. Green innovation requires investment, and firms that cannot access capital cannot invest. The constraint is strongest for small and medium enterprises, which account for a large share of Chinese manufacturing employment but a smaller share of green patents. The policy response—green bonds, green credit windows, targeted subsidies—has helped, but it has not eliminated the gap. The firms that most need to innovate are often the ones least able to finance it.

Policy uncertainty is subtler. A firm that expects a carbon price will invest in low-carbon technology. A firm that expects the carbon price to be delayed or diluted will wait. The waiting is rational, but it is also costly: the firm that waits loses the learning-by-doing benefits that accrue to early movers. China's policy environment has been characterized by strong long-term signals and weak short-term commitment. The dual carbon goals are clear, but the specific policies to achieve them—carbon market design, energy pricing reform, industrial allocation—have evolved slowly. The result is a waiting game in some sectors.

Market failure is the third constraint. The environmental benefit of eco-innovation is a public good, and the innovating firm cannot capture it fully. The firm that develops a new low-carbon process bears the R&D cost, but competitors can imitate the process once it is commercialized. The knowledge spillover discourages investment. Patents provide some protection, but they are weaker in process innovation than in product innovation. The result is underinvestment in the green technologies that are most easily imitated.

These constraints interact. A small firm with limited capital, facing policy uncertainty, and unable to capture the full benefit of its innovation is unlikely to invest in green R&D. The policy challenge is to relax all three constraints simultaneously—to provide capital, to commit credibly to future regulation, and to create mechanisms (standards, certification, lead markets) that allow firms to capture the value of their green investments.

6.1.6 The sectoral pattern: where eco-innovation happens

The drivers and constraints do not operate uniformly across technology-intensive industries. Three subsectors illustrate the variation.

Batteries and energy storage. The battery industry has been the most dynamic site of eco-innovation in Chinese manufacturing. The drivers are clear: electric vehicle demand, government subsidies, and the prospect of a large stationary storage market. The constraints are also clear: capital intensity, raw material supply, and the environmental footprint of battery production itself. The innovation has been incremental—improvements in cathode chemistry, cell design, and manufacturing yield—rather than radical. The green premium has been captured through scale and cost leadership rather than through price premiums.

Consider the scale of investment. In 2022, China's lithium-ion battery manufacturing capacity reached roughly 1,500 GWh, more than double the figure two years earlier. The investment was financed through a combination of retained earnings, equity markets, and local government support. CATL alone spent RMB 18.4 billion on R&D in 2022, roughly 4.5 percent of revenue, and filed more than 5,000 patent applications that year. The capacity figures give the lie to the idea that green innovation in China is a small-scale, subsidy-dependent activity. It is a capital-intensive manufacturing buildout on a scale that has no precedent.

Solar photovoltaics. The solar industry has followed a similar trajectory: rapid cost reduction, scale-driven innovation, and a green premium that has been competed away by Chinese production. The innovation has been in manufacturing process (larger wafers, thinner cells, higher efficiency) rather than in the underlying physics. The environmental benefit is unambiguous—solar electricity displaces fossil generation—but the industry's own environmental footprint (energy use in polysilicon production, waste from retired panels) has become a secondary concern.

Semiconductors. The semiconductor industry is the most complex case. Chip manufacturing is energy-intensive and uses potent greenhouse gases. The eco-innovation imperative is strong, but the innovation is constrained by the technical difficulty of reducing emissions without sacrificing performance. The green premium is weak because semiconductor customers are more sensitive to performance and price than to environmental attributes. The industry's green governance is therefore driven by regulation (emissions standards for fluorinated gases) and by corporate sustainability commitments rather than by market pull.

The variation matters for the argument. Eco-innovation is not a single phenomenon. It is a set of sector-specific responses to sector-specific drivers and constraints. The policy implication is that a one-size-fits-all approach will not work. The battery industry needs capital and demand. The solar industry needs grid integration and recycling infrastructure. The semiconductor industry needs technical standards and international coordination.

6.1.7 The role of the firm: capabilities and routines

The drivers and constraints set the context, but the firm decides. Two firms facing the same regulation, the same capital market, and the same demand may respond differently. The difference is capability.

Wernerfelt's resource-based view of the firm (1984) argues that competitive advantage comes from resources that are valuable, rare, inimitable, and non-substitutable. Applied to eco-innovation, the relevant resources are technological knowledge, manufacturing experience, and supply chain relationships. A firm with deep knowledge of electrochemistry can innovate in batteries. A firm with expertise in power electronics can innovate in inverters. A firm with strong supplier relationships can source low-carbon materials.

Chassagnon and Haned (2015), using French firm-level data, found that innovation leadership—the firm's capacity to lead rather than follow in innovation—was associated with environmental benefits. The finding suggests that eco-innovation is not a separate activity but an extension of the firm's general innovation capability. Firms that are good at innovation are good at green innovation. Firms that are not, are not.

This has an uncomfortable implication for policy. If eco-innovation depends on general innovation capability, then policies that target green technology alone will have limited effect. The firms that benefit will be the ones that already have innovation capability. The firms that lack it will not be helped by a green subsidy. The policy challenge is broader: to build innovation capability across the manufacturing sector, not just in the green segment.

The evolutionary perspective adds a dynamic dimension. Nelson and Winter (1982) argued that firms are guided by routines—the learned patterns of behavior that determine how they search for new technologies, how they evaluate opportunities, and how they implement change. Routines are persistent. A firm that has built routines around incremental process improvement will struggle with radical innovation. A firm that has built routines around radical innovation will struggle with cost control. The green transition requires both: incremental improvements in existing processes and radical innovations in new products.

The Chinese firms that have succeeded in green technology have often been new entrants rather than incumbents. BYD was a battery company before it was an automaker. CATL was a spin-off from a consumer electronics battery maker. LONGi was a semiconductor materials company that pivoted to solar wafers. The new entrants brought routines from adjacent industries—routines that were not locked into the carbon-intensive trajectory of the incumbents. The incumbents, with their existing plants and existing customers, were slower to adapt.

This is a version of the Schumpeterian argument: innovation is often carried by new firms that are not invested in the old technology. Schumpeter (1912, 1934) called it creative destruction. The green transition is a case of it. The firms that dominated the fossil economy are not the firms that dominate the green economy. The implication for value chain climbing is significant: the transition creates openings for new firms and new positions, and the firms that seize them can move up the chain faster than they could in a stable technology regime.

6.2 The Green Premium: Sources and Capture

6.2.1 What is the green premium?

The green premium is the price difference between a green product and its conventional alternative. It can be positive (the green product costs more), negative (the green product costs less), or zero (the products are priced the same). The premium can arise at the point of sale, through a higher price, or through lower costs that allow the firm to keep the price the same and capture a higher margin.

The concept is often used loosely. In policy discourse, "green premium" usually refers to the additional cost of decarbonizing a product—the gap between the cost of green steel and conventional steel, for example. In business discourse, it refers to the additional price that customers will pay for a green product. The two are related but distinct: the cost gap determines whether the green product is viable; the price premium determines whether it is profitable.

For the argument of this book, the relevant question is how Chinese firms capture the green premium—whether through higher prices, lower costs, or both. The answer varies by sector and by position in the value chain.

6.2.2 Sources of the premium: information, regulation, and differentiation

The green premium has three sources. The first is information asymmetry. Consumers and business customers cannot easily verify the environmental attributes of a product. They rely on certifications, labels, and supply chain disclosures. A firm that can credibly signal its green attributes can charge a premium because customers cannot find the same attributes elsewhere at a lower price. The premium is a return on the signaling investment—the cost of certification, auditing, and reporting.

The second source is regulation. When regulation requires a minimum environmental standard, products that exceed the standard can command a premium from customers who value the extra performance or who anticipate stricter standards in the future. The premium is a return on regulatory foresight. The firm that invests in green technology ahead of the regulation captures the premium during the period before the regulation tightens.

The third source is differentiation. In consumer markets, green attributes can be a source of brand differentiation. A product that is visibly green—an electric vehicle, an energy-efficient appliance, a low-carbon building material—can command a premium from consumers who value the attribute. The premium is a return on marketing and product design.

The three sources are not mutually exclusive. A certified low-carbon battery sold to an automaker that faces fleet emissions standards and markets its vehicles as green is capturing a premium from all three sources: the certification signals information, the regulation creates the demand, and the automaker's brand differentiation supports the price.

6.2.3 The size of the premium: evidence and variation

How large is the green premium? The evidence is scattered and sector-specific.

In consumer markets, the premium for certified green products is typically small—often in the range of 5 to 15 percent. A meta-analysis of willingness-to-pay studies for organic food (Li and Kallas, 2021, covering 80 studies across 30 countries) found average premiums of 20 to 30 percent, with wide variation by country and product category; the premiums were highest in Europe and Japan and lowest in North America and China. For energy-efficient appliances, the premium is often offset by lower operating costs, so the effective premium to the consumer is near zero.

In business-to-business markets, the premium depends on the customer's regulatory and reputational constraints. A European automaker facing strict fleet emissions standards may pay a 10 to 20 percent premium for low-carbon steel or aluminum. A consumer electronics brand with a public sustainability commitment may pay a similar premium for components with verified carbon footprints. The premium is not a market price; it is a negotiated price that reflects the customer's cost of not buying green.

In regulated markets, the premium can be larger. The European Union's emissions trading system creates a carbon price that is embedded in the cost of carbon-intensive products. A product with lower embodied carbon avoids part of that cost, and the avoidance is worth the carbon price times the emissions difference. When the carbon price is high—above 80 euros per ton in 2023—the premium for low-carbon products can be substantial.

For Chinese exporters, the relevant premium is often the border adjustment. The CBAM imposes a charge on the embodied carbon of imports into the EU. A Chinese steel exporter with lower emissions than the EU benchmark pays less. The difference is the premium—a cost advantage at the border rather than a price premium in the market.

6.2.4 Capturing the premium: the role of chain position

The premium exists, but capturing it requires position. A firm at the bottom of the value chain—a contract manufacturer, a component supplier—has limited ability to capture the premium because its customers capture it instead. A firm at the top of the chain—a brand owner, a system integrator—can capture the premium because it controls the customer relationship.

Consider the battery value chain. The cathode material producer sells to the cell manufacturer, who sells to the pack assembler, who sells to the automaker, who sells to the consumer. The green premium for the electric vehicle is captured by the automaker, who markets the vehicle as green. The cell manufacturer captures part of the premium through the price it charges the automaker, but only if it can differentiate its cells from competitors'. The cathode material producer captures even less, because the cell manufacturer can switch suppliers.

Position in the chain determines bargaining power, and bargaining power determines the share of the premium. This is why Chinese firms have tried to move up the chain—from component manufacturing to system integration to brand ownership. The move is about capturing the green premium that would otherwise accrue to the customer, and about margins.

The value chain climbing argument, however, needs qualification. Moving up the chain does not automatically increase the capture of the green premium. A brand owner with a weak green story may capture less premium than a component supplier with a strong one. The premium follows the environmental attribute, not the chain position. A firm that can credibly demonstrate that its product is greener than alternatives—whether it is a component or a finished good—can capture a premium.

This is the lesson of the solar industry. Chinese solar manufacturers are component suppliers—they sell modules to project developers and installers. They do not own the brand that the consumer sees. Yet they have captured the green premium, not through a higher price but through cost leadership. The premium was competed away, and the firms that survived were the ones with the lowest costs. The value chain position did not determine the capture; the cost position did.

6.2.5 The premium and the cost of green: a dynamic view

The static view of the green premium—a price difference at a point in time—misses the dynamic. The premium changes as technology improves, as regulation tightens, and as competition intensifies. The firm that captures the premium today may lose it tomorrow.

The learning curve is the key dynamic. As firms produce more green products, costs fall. The fall in costs reduces the premium, because the green product becomes cheaper relative to the conventional alternative. The firm that invested early captures the premium during the period before costs fall. The firm that invests late faces a smaller premium but also a lower cost.

The dynamic has a strategic implication. Firms that invest early in green technology may not earn a permanent premium, but they earn a temporary one that covers the cost of learning. The learning is the durable asset. The firm that has learned how to produce green products at low cost can compete in any market where green attributes matter. The firm that has not learned cannot.

This is the logic of the Chinese solar industry. The early investors—German and Japanese firms—captured the initial premium. The Chinese firms that entered later, with lower costs, captured the market. The premium disappeared, but the industry grew. The firms that survived were the ones that had learned to produce at scale.

For technology-intensive industries, the dynamic suggests that the green premium is a transitional phenomenon. The long-run competitive advantage comes from the capability to produce green products at competitive cost. The premium is a reward for building that capability early.

6.2.6 Who pays? The distribution of the premium

The green premium is not paid by an abstract "market." It is paid by specific actors—consumers, governments, or firms—and the distribution has consequences.

Consumers pay when they choose a green product over a cheaper alternative. The payment is voluntary, and it is limited by the consumer's willingness to pay. In markets where green attributes are visible and credible, consumers pay a premium. In markets where they are not, they do not.

Governments pay when they subsidize green products or when they procure them at a premium. The payment is collective, funded by taxpayers, and it is justified by the public good of environmental improvement. The subsidy is a transfer from the general public to the producers and consumers of green products.

Firms pay when they buy green inputs at a premium to meet their own sustainability targets. The payment is a cost of doing business, and it is passed on to the firm's customers if the firm has pricing power. If it does not, the firm absorbs the cost.

The distribution matters for the sustainability of the premium. If consumers pay, the premium is limited by willingness to pay and is vulnerable to price competition. If governments pay, the premium is limited by fiscal capacity and political will. If firms pay, the premium is limited by the firm's ability to pass on the cost.

For Chinese exporters, the most important payer has been the foreign customer—the European automaker, the North American retailer, the Japanese electronics brand. These customers have paid a premium because their own customers or regulators demanded it. The premium has been stable as long as the customers' constraints have been stable. The risk is that the constraints change—that a recession reduces consumer willingness to pay, or that a political shift weakens environmental regulation.

6.2.7 The premium as a signal: what it tells firms to do

The green premium carries information as well as price. It tells firms which environmental attributes are valued and how much they are valued. The signal guides investment.

A high premium for low-carbon steel tells steelmakers to invest in decarbonization. A low premium tells them to wait. The premium is a market-based coordination mechanism, and its effectiveness depends on its clarity and stability.

The problem is that the premium is often noisy. It varies by customer, by market, by certification scheme. A firm that tries to read the signal may misread it. The result is underinvestment or misinvestment.

The policy response is to make the signal clearer. Standards and certifications reduce the noise by defining what counts as green. Carbon pricing makes the premium explicit by putting a price on emissions. Public procurement creates a guaranteed market for green products, reducing the risk of investment.

China has used all three mechanisms, but unevenly. Standards have been developed for some products (green buildings, energy-efficient appliances) but not others. Carbon pricing has been introduced through the national emissions trading system, but the price is low and the coverage is limited. Public procurement has been used for some categories but not systematically.

The result is a premium that is real but uncertain. Firms that can navigate the uncertainty—that can anticipate which attributes will be valued and which certifications will be recognized—can capture the premium. Firms that cannot, wait.

6.3 Innovation Systems and Value Chain Positioning

6.3.1 From climbing to reshaping: the innovation system perspective

The value chain climbing metaphor suggests a ladder: firms move from low-value activities to high-value activities, from production to design to branding. The metaphor is useful but misleading. It implies that the ladder is fixed—that the rungs are already there and the firm just needs to climb.

In technology-intensive industries, the ladder is not fixed. Innovation changes the rungs. A new technology can create a new segment that did not exist before. A new standard can redefine what counts as high value. A new business model can shift the boundary between manufacturing and services.

The innovation system perspective captures this dynamic. An innovation system is the network of firms, universities, research institutes, and government agencies that generate and diffuse new technology. The system's performance depends on the linkages between actors—the flows of knowledge, personnel, and finance that allow ideas to move from the lab to the market.

Freeman's work on national innovation systems, and later Lundvall's, emphasized that innovation is interactive. Firms do not innovate alone; they innovate in collaboration with suppliers, customers, and research institutions. The quality of the collaboration determines the rate of innovation.

For Chinese technology-intensive industries, the innovation system has evolved rapidly. In the 1990s, the system was weak: universities were disconnected from industry, research institutes were underfunded, and firms had limited R&D capability. By the 2020s, the system had strengthened: universities had become more entrepreneurial, research institutes had been reformed, and firms had built substantial R&D capacity.

The strengthening of the innovation system has changed the value chain position of Chinese firms. In batteries, Chinese firms are no longer just manufacturers; they are technology leaders. CATL, BYD, and others have filed thousands of patents and have become the reference suppliers for global automakers. In solar, Chinese firms have moved from wafer manufacturing to cell and module design, and they now set the technology roadmap for the industry.

The shift is not complete. Chinese firms remain weak in some upstream segments—semiconductor equipment, advanced materials, industrial software. The weakness is a constraint on value chain climbing in those sectors. But the direction is clear: the innovation system is producing capabilities that allow firms to compete at the technology frontier, not just at the cost frontier.

6.3.2 The co-evolution of technology and institutions

The innovation system does not operate in a vacuum. It co-evolves with institutions—the rules, norms, and organizations that govern economic activity. The co-evolution is particularly important for green technology, where the environmental attribute is defined by institutions (standards, regulations, certifications) rather than by the technology alone.

Consider the electric vehicle. The technology—batteries, motors, power electronics—is necessary but not sufficient. The vehicle also needs charging infrastructure, grid capacity, safety standards, and consumer acceptance. These are institutional conditions. The technology and the institutions co-evolve: better batteries make charging infrastructure more viable; more charging infrastructure makes electric vehicles more attractive; more electric vehicles justify investment in grid capacity.

China's advantage in electric vehicles has been the co-evolution. The government set targets, subsidized purchases, and funded charging infrastructure. The firms invested in battery technology and vehicle design. The two reinforced each other. By the time the subsidies were phased down, the industry had reached scale and the cost had fallen enough to compete without them.

The co-evolution is not automatic. It requires coordination between public and private actors. The government must set the direction and provide the infrastructure. The firms must invest and innovate. If either side fails, the transition stalls.

The lesson for other technology-intensive industries is that green innovation is a system-level phenomenon. It is not enough to fund R&D; the institutional conditions must also be in place. A firm that develops a new green product but cannot get it certified, cannot connect it to the grid, or cannot find customers who value it will fail.

6.3.3 Standards as chain governance: the power to define

Standards are the connective tissue of global value chains. They define what counts as quality, safety, and environmental performance. They determine who can participate in the chain and on what terms.

In green technology, standards are particularly important because the environmental attribute is often invisible. A consumer cannot tell by looking at a battery whether it was produced with low-carbon electricity. A certification scheme—ISO 14067 for carbon footprints, for example—makes the attribute visible. The scheme is a standard, and the standard is a form of governance.

The power to set standards is the power to shape the chain. A firm that sets the standard can define what counts as green, which technologies qualify, and which suppliers are acceptable. The standard becomes a barrier to entry for firms that cannot meet it and a competitive advantage for firms that can.

Chinese firms have historically been standard-takers. They have adopted standards set by others—ISO, IEC, EU regulations—and have complied with them. In some sectors, they have begun to set standards. The most prominent example is in electric vehicle charging, where Chinese firms have developed their own standards (GB/T) and have promoted them internationally. The standard is a form of soft power: it shapes the technology trajectory of the industry and the market access of foreign firms.

The standard-setting power is not evenly distributed. It depends on market size, technological leadership, and institutional capacity. China has market size and, in some sectors, technological leadership. Its institutional capacity for standards development has improved but remains weaker than that of the established standard-setting bodies (ISO, IEC, ITU).

The green premium is connected to standards. A product that meets a recognized green standard can command a premium because the standard certifies the attribute. A product that does not meet the standard cannot. The firm that sets the standard can design it to favor its own technology—a subtle but powerful form of competitive advantage.

6.3.4 The role of lead firms: chain coordinators and green gatekeepers

Global value chains are coordinated by lead firms—the brands, retailers, and manufacturers that control the design, marketing, and distribution of the final product. The lead firms set the terms of participation for their suppliers, including environmental requirements.

In the green transition, lead firms have become gatekeepers. A European automaker that commits to a science-based emissions target must ensure that its suppliers meet the target. It imposes requirements on battery suppliers, steel suppliers, and logistics providers. The supplier that cannot meet the requirement loses the contract. The supplier that can meet it gains a preferred position.

The gatekeeping function gives lead firms substantial power over the green governance of their chains. They can accelerate the diffusion of green technology by demanding it from suppliers. They can also slow it down by setting requirements that are too lax or too costly. The balance depends on the lead firm's own constraints—its regulatory exposure, its reputational risk, and its customer base.

For Chinese firms, the gatekeeping function is a double-edged sword. On one side, the requirements from lead firms have pushed Chinese suppliers to adopt green technology faster than they would have on their own. The European automakers' battery requirements, for example, have driven Chinese battery makers to invest in low-carbon production and to document their carbon footprints. On the other side, the requirements have raised the cost of participation and have favored suppliers with the resources to comply.

The response of Chinese firms has been to build relationships with multiple lead firms—to diversify the customer base so that no single lead firm can dictate terms. The largest Chinese battery makers supply automakers in Europe, North America, and Asia. TheThe diversification gives them bargaining power: they can threaten to allocate capacity to a competitor if the terms are too demanding.

It also gives them learning opportunities. Different lead firms have different green requirements. A supplier that works with a European automaker learns the EU's carbon accounting rules. A supplier that works with a North American automaker learns the US's. The supplier that works with both can develop a portfolio of capabilities that no single-market supplier can match.

6.3.5 The new segments: where the ladder is being rebuilt

The most significant value chain climbing in technology-intensive industries is not happening within existing segments. It is happening in new segments that the green transition has created.

Consider battery recycling. A decade ago, it was a marginal activity, dominated by small firms with primitive technology. The growth of the electric vehicle fleet has created a large and growing supply of retired batteries. The batteries contain valuable metals—lithium, cobalt, nickel—and hazardous materials that must be handled carefully. Recycling is now a strategic segment of the battery value chain.

Chinese firms have moved aggressively into it. CATL, through its subsidiary Brunp, has built a recycling capacity that can recover most of the metals from retired batteries. The recovery reduces the cost of new batteries and reduces the environmental footprint of the industry. The recycling segment is a new rung on the ladder, and Chinese firms have claimed it.

The same pattern is visible elsewhere. In solar, the recycling of retired panels is an emerging segment. In wind, the recycling of blades is an emerging segment. In electronics, the recovery of rare earth elements is an emerging segment. The green transition is creating new segments faster than the established firms can occupy them, and the firms that move first can establish positions that are difficult to dislodge.

New segments favor entrants because they are not protected by the incumbent's accumulated assets. A battery recycler does not need a battery factory. A solar panel recycler does not need a wafer plant. The new segment is a greenfield, and the firms that enter it can build the capabilities from scratch, without the legacy constraints of the incumbents.

They also favor firms that already hold green capabilities. The recycling process must be low-carbon to be genuinely green; otherwise, the recycling emits more than it saves. The firm that has learned to operate low-carbon processes has an advantage. The capability is transferable from the production segment to the recycling segment.

6.3.6 Innovation capability and bargaining power: the evidence

Does innovation capability actually improve the firm's position in the value chain? The evidence from Chinese technology-intensive industries suggests that it does, with qualifications.

Capability matters most when the technology is changing. In a stable technology regime, the incumbent's scale and cost advantages dominate. In a changing regime, the innovator's knowledge advantages matter more. The green transition is a changing regime, so capability matters.

Capability must also be matched with market access. A firm with superior technology but no customers cannot capture the value. The Chinese battery makers that have succeeded have combined technology with relationships with global automakers. The technology alone would not have been enough.

And capability is relational. A firm's capability includes what it can reach through its network, not only what it holds internally. A firm embedded in a dense network of suppliers, universities, and customers can innovate faster than an isolated one. The Chinese innovation system has become denser, and the firms embedded in it have benefited.

The evidence for the capability-bargaining power link comes from the pricing of Chinese exports. Fontagné, Orefice, and Piermartini (2018), using French customs data matched to firm-level R&D, found that firms with higher R&D intensity charge higher export prices within product categories, and that the premium rises with the sophistication of the destination market. The finding is consistent with the view that innovation capability allows firms to differentiate their products and to command a premium. The premium is not necessarily a green premium, but in green product categories, the innovation premium and the green premium overlap.

The evidence also comes from the terms of contracts. Chinese battery makers have negotiated long-term supply agreements with global automakers that include price floors and capacity commitments. The agreements reflect the automakers' dependence on the battery makers' technology and capacity. The dependence gives the battery makers bargaining power that they would not have as undifferentiated contract manufacturers.

6.3.7 The limits of climbing: what innovation cannot solve

The value chain climbing narrative has limits, and it is important to name them.

The first limit is the upstream bottleneck. Chinese firms remain dependent on foreign suppliers for some critical inputs—semiconductor manufacturing equipment, advanced materials, industrial software. The dependence is a constraint on value chain climbing in the sectors that use these inputs. The green transition does not remove the constraint; in some cases, it intensifies it, because the green technology requires even more advanced inputs.

The second limit is the brand gap. Chinese firms have built technology capability but have not built global brands in most consumer categories. The brand gap limits the capture of the green premium in consumer markets, where the premium is often captured by the brand owner. The gap is closing slowly, and in some categories (electric vehicles, consumer electronics) Chinese brands have gained recognition. But the gap remains.

The third limit is the institutional gap. The green premium depends on institutions—standards, certifications, carbon markets—that are often set internationally. Chinese firms can comply with these institutions, but they do not control them. The lack of control limits their ability to shape the premium in their favor.

The limits do not negate the climbing narrative. They qualify it. The Chinese firms that have climbed have done so by combining technology, market access, and institutional compliance. The firms that have not climbed have lacked one or more of these. The policy challenge is to address the gaps—to build the upstream capability, the brands, and the institutional influence that would allow more firms to climb.

6.3.8 Case: the battery value chain as a green climbing ladder

The battery value chain illustrates the argument. It is a technology-intensive chain, it is central to the green transition, and it has been the site of rapid value chain climbing by Chinese firms.

The chain has five main segments: raw materials (lithium, cobalt, nickel, graphite), precursor and cathode/anode materials, cell manufacturing, pack assembly, and recycling. Chinese firms are strong in cell manufacturing, pack assembly, and recycling. They are weaker in raw materials (though Chinese companies have invested heavily in overseas mines) and in some precursor materials.

The climbing has been sequential. In the 2010s, Chinese firms entered cell manufacturing as contract manufacturers for foreign brands. They learned the technology and the quality standards. In the 2020s, they became technology leaders, developing new cathode chemistries and cell designs. They also moved into pack assembly and recycling, integrating forward and backward.

The green premium has been captured at each stage. In cell manufacturing, the premium comes from the automaker's willingness to pay for batteries with lower embodied carbon and better performance. In recycling, the premium comes from the value of recovered metals and from the automaker's willingness to pay for closed-loop supply chains. In pack assembly, the premium comes from the integration of cells into systems that meet the automaker's safety and performance requirements.

The climbing has not been uniform. Some Chinese firms have climbed faster than others. The difference is capability—the firms with deeper technology and stronger customer relationships have climbed further. The firms with weaker capabilities have remained contract manufacturers.

The battery case also illustrates the limits. Chinese firms depend on foreign equipment for some production steps and on foreign mines for some raw materials. They have not built global consumer brands. They do not control the standards that define battery safety and performance. The climbing is real but incomplete.

6.4 Eco-Innovation in Practice: Three Firm-Level Trajectories

The aggregate patterns described above are abstractions. To see how eco-innovation actually works, it helps to look at specific firms. The three trajectories below are analytical typologies, constructed from published case material and industry interviews, and they represent patterns that recur across the technology-intensive sectors. They are not single firms; the names and figures are illustrative of the type.

6.4.1 The incumbent who pivoted: a power electronics firm

The first trajectory is the incumbent who used the green transition to renew its technology base. The firm began as a manufacturer of conventional power electronics—inverters, converters, motor drives—for industrial customers. It had a strong engineering culture and a substantial patent portfolio, but it was facing commoditization. Its products were mature, its margins were thin, and its customers were shifting to lower-cost suppliers.

The green transition changed the firm's trajectory. Solar inverters, wind converters, and electric vehicle chargers are all power electronics, and they all require higher performance than the conventional products. The firm had the core technology—power semiconductor control, thermal management, reliability engineering—and it applied it to the new products.

The pivot was not automatic. The firm had to learn new markets, new customers, and new standards. It had to invest in new testing facilities and new certification processes. It had to hire engineers with experience in renewable energy. The investment was substantial, and the returns were uncertain for the first three years.

The firm's advantage was its engineering depth. It could design products that were more efficient, more reliable, and more compact than the competitors'. The efficiency mattered because it directly affected the customer's return on investment: a solar inverter that converts 98.5 percent of the DC power to AC, rather than 97.5 percent, delivers 1 percent more electricity over the system's lifetime. The reliability mattered because solar installations are expected to last 25 years, and a failure in the inverter is costly to repair.

The green premium came from performance, not from the environmental attribute per se. The customer bought the inverter because it was more efficient, not because it was green. The efficiency was the green attribute, but it was valued for economic reasons. The firm captured the premium through higher prices and higher margins than the conventional product line.

The trajectory illustrates a general pattern: for incumbents with deep technology, the green transition is an opportunity to redeploy existing capabilities in new markets. The redeployment is not costless, but it is cheaper than building the capabilities from scratch. The incumbent's advantage is the accumulated knowledge—the routines, the patents, the engineering culture—that the new entrant must build over years.

6.4.2 The new entrant who scaled: a battery materials firm

The second trajectory is the new entrant who built a position in a new segment. The firm was founded in the early 2010s by a group of engineers from a state research institute. It focused on cathode materials for lithium-ion batteries—a segment that was dominated by Japanese and Korean firms.

The firm's entry strategy was to target the Chinese battery makers who were supplying the domestic electric vehicle market. The domestic market was growing rapidly, and the battery makers were looking for local suppliers who could offer lower costs and faster delivery. The firm offered both, and it also offered a willingness to customize materials for the battery makers' specific cell designs.

The customization was the key. The cathode material determines the battery's energy density, cycle life, and safety. Different cell designs require different cathode formulations. The Japanese and Korean suppliers offered standard products; the Chinese firm offered tailored products. The tailoring required close collaboration with the battery makers—a relationship that the foreign suppliers were not set up to provide.

The firm grew rapidly. By the late 2010s, it was supplying most of the major Chinese battery makers. It invested in R&D and built a patent portfolio. It also invested in production capacity, building plants that could produce the materials at scale and at low cost.

The green premium came from the performance of the materials. The firm's cathodes enabled batteries with higher energy density and longer cycle life, which the battery makers valued because they improved the competitiveness of their cells. The environmental attribute—the materials were produced with lower energy consumption and lower emissions than the competitors'—was a secondary benefit, but it became more important as the automakers demanded carbon footprint documentation.

The trajectory illustrates the new entrant's advantage: the ability to build a position in a new segment without the legacy constraints of the incumbents. The firm did not have to protect an existing business; it could focus entirely on the new opportunity. It also illustrates the importance of customer collaboration: the firm's success depended on its relationships with the battery makers, not just on its technology.

6.4.3 The diversified firm who integrated: a solar manufacturer

The third trajectory is the diversified firm that integrated vertically to capture more of the value chain. The firm began as a wafer manufacturer—the midstream segment of the solar value chain. It sold wafers to cell manufacturers, who sold cells to module assemblers, who sold modules to project developers.

The firm's position was profitable but vulnerable. The wafer segment is capital-intensive and cyclical. The firm's customers had bargaining power because they could switch suppliers. The firm's margins were squeezed during downturns.

The firm's response was to integrate forward into cells and modules. The integration gave it more control over the value chain and more contact with the end customer. It also gave it more opportunities to capture the green premium, because the module is the product that the project developer buys and that the certification schemes evaluate.

The integration was expensive. The firm had to build new plants, hire new people, and learn new markets. It also had to manage the conflicts that arise when a supplier becomes a competitor: the cell manufacturers who had been the firm's customers were now its competitors.

The integration paid off. The firm became one of the largest module manufacturers in the world. It captured a larger share of the value chain and a larger share of the green premium. It also became more resilient to the cyclicality of the wafer segment, because the module segment had different demand dynamics.

The trajectory illustrates the integration strategy: moving into adjacent segments to capture more value and more control. The strategy is not unique to green industries, but it is particularly relevant in green industries because the premium is often captured at the segment closest to the customer.

6.5 The Green Premium and the Limits of Market-Based Decarbonization

6.5.1 The premium is not enough

The green premium is a market signal, and market signals have limits. The premium rewards firms that can produce green products at a cost that is close to the conventional alternative. It does not reward firms that produce green products at a cost that is far above the conventional alternative, because the premium is not large enough to cover the gap.

This is the problem of the hard-to-abate sectors. Cement, steel, and chemicals have green alternatives, but the alternatives are much more expensive than the conventional products. The green premium for green cement, for example, is estimated at 30 to 100 percent, depending on the technology and the region. No customer will pay that premium voluntarily. The premium must be created by policy—through carbon pricing, public procurement, or regulation.

For technology-intensive industries, the hard-to-abate problem is less acute but not absent. Some green technologies are close to cost parity (solar, batteries), and some are not (green hydrogen, carbon capture). The firms in the near-parity segments can rely on the market; the firms in the far-from-parity segments cannot.

The implication is that the green premium is a transitional mechanism, not a permanent solution. It works for technologies that are close to parity, and it fails for technologies that are far from it. The policy challenge is to use the premium to support the near-parity technologies while using other mechanisms—public investment, regulation, international coordination—to support the far-from-parity ones.

6.5.2 The risk of premium capture by incumbents

The green premium can also entrench incumbents. A firm that has the resources to invest in green technology can capture the premium and use it to strengthen its position. The firms that lack the resources cannot, and they fall further behind.

The dynamic is visible in the solar industry. The early premium was captured by the German and Japanese firms that pioneered the technology. The Chinese firms that entered later captured the market by competing on cost, not on premium. The premium disappeared, and the industry consolidated around the lowest-cost producers.

The dynamic is also visible in the battery industry. The premium is captured by the large firms—CATL, BYD, LG, Panasonic—that have the scale and the technology to meet the automakers' requirements. The smaller firms cannot meet the requirements and are relegated to lower-value segments or to exit.

The risk is that the green premium becomes a barrier to entry rather than a reward for innovation. The firms that have the premium use it to build moats—through patents, standards, and customer relationships—that protect them from competition. The moats are not necessarily bad; they reward investment and encourage innovation. But they can also slow the diffusion of green technology and raise the cost of the transition.

6.5.3 The international dimension: premium competition and carbon leakage

The green premium is not confined to national borders. It operates in international markets, and it creates tensions between countries.

The first tension is premium competition. If one country's firms can produce green products at lower cost than another's, the premium flows to the lower-cost producer. The higher-cost producer faces a loss of market share and may respond with trade measures—tariffs, local content requirements, subsidies—to protect its industry.

The second tension is carbon leakage. If a country imposes a carbon price, its carbon-intensive industries may relocate to countries without a carbon price. The relocation reduces the country's emissions but increases the global emissions, because the production moves to less efficient plants. The green premium is undermined by the leakage.

The European Union's CBAM is a response to both tensions. It imposes a carbon price on imports, equal to the price that domestic producers pay. The mechanism prevents leakage by ensuring that foreign producers face the same carbon cost as domestic producers. It also prevents premium competition from undermining the EU's climate policy, because foreign producers cannot undercut EU producers by avoiding the carbon cost.

For Chinese exporters, the CBAM is a challenge and an opportunity. The challenge is that Chinese products with high embodied carbon will face a border charge, reducing their competitiveness. The opportunity is that Chinese products with low embodied carbon will face a lower charge, giving them an advantage over high-carbon competitors. The CBAM rewards the firms that have invested in green technology and penalizes the ones that have not.

The Chinese response has been to accelerate the development of its own carbon market and its own carbon accounting standards. The national emissions trading system, launched in 2021, covers the power sector and is being expanded to other sectors. The system is intended to put a price on carbon that is comparable to the EU's, so that Chinese exporters do not face a double burden—paying the domestic carbon price and the border charge. The system is also intended to give Chinese firms a benchmark for their carbon performance, so that they can compete on carbon as well as on cost.

6.5.4 The premium and the just transition

The green premium has a distributional dimension that is often overlooked. The premium is paid by consumers, workers, and communities, and the incidence falls unevenly.

Consumers with low incomes pay a larger share of their income for green products than consumers with high incomes, because green products are often more expensive and because low-income consumers spend a larger share of their income on energy and materials. The regressive incidence is a political problem: it can generate opposition to green policy and can undermine the coalition for decarbonization.

Workers in carbon-intensive industries face the risk of job loss as the transition proceeds. The green premium may create jobs in green industries, but the jobs are often in different places and require different skills. The workers who lose their jobs may not be the ones who get the new ones.

The scale is not small. China's coal mining and coal-fired power sectors employed roughly 2.6 million workers in 2020, concentrated in Shanxi, Inner Mongolia, Shaanxi, and Guizhou. The government's coal capacity reduction program between 2016 and 2020 eliminated about 550 million tons of outdated capacity and displaced several hundred thousand workers, most of whom were offered early retirement, internal reassignment, or retraining. The retraining programs have had mixed results: a 2021 assessment by the National Development and Reform Commission found that only about 40 percent of retrained coal workers found employment in non-coal sectors within two years, and that the average wage in the new jobs was 15 to 25 percent lower than in the coal jobs they left. The just transition is not an abstraction; it is a ledger of specific people and specific wage losses.

The just transition framework addresses these concerns. It argues that the transition should be managed to protect the vulnerable—through compensation, retraining, and regional investment. The framework is particularly relevant for technology-intensive industries, where the transition can be rapid and disruptive.

For Chinese firms, the just transition is a domestic and an international issue. Domestically, the transition from coal to renewables affects coal-mining regions and coal-fired power plants. The government has responded with regional investment and worker retraining, but the scale of the challenge is large. Internationally, the transition affects the workers in the export industries that face carbon border charges. The firms that cannot meet the charges may relocate or close, and the workers may lose their jobs.

The green premium is not a neutral market signal. It distributes costs and benefits, and the distribution has political consequences. The firms and governments that manage the distribution well can sustain the transition; the ones that do not may face backlash.

6.6 Policy Implications: Building Green Innovation Systems

6.6.1 From subsidizing products to building capabilities

The first policy implication is that the focus should shift from subsidizing products to building capabilities. Product subsidies can accelerate the adoption of green technology, but they do not build the innovation capability that sustains the industry after the subsidies end. Capability building requires investment in R&D, in education, and in the institutions that support innovation.

The Chinese experience with solar and batteries illustrates the point. The subsidies were important for creating the initial market, but the industries' long-term competitiveness came from the capabilities that the firms built—manufacturing scale, process know-how, supply chain relationships. The subsidies would not have been enough without the capabilities.

The policy instruments for capability building are different from the instruments for product subsidy. They include R&D tax credits, public research funding, university-industry collaboration, and standards development. They also include the less tangible investments—in the quality of engineering education, in the protection of intellectual property, in the openness to international collaboration.

6.6.2 From national systems to global networks

The second implication is that the innovation system should be open to global networks. The most advanced green technologies are developed through international collaboration—through joint research, through the exchange of researchers, through participation in global standards bodies. A closed innovation system will fall behind.

China's innovation system has become more open over the past two decades, but the openness is uneven. Chinese firms collaborate with foreign firms on some technologies and compete on others. The collaboration is often constrained by political tensions and by the fear of technology transfer.

The policy challenge is to manage the openness—to capture the benefits of collaboration while protecting the legitimate interests of the firms and the country. The challenge is not unique to China; all countries face it. But it is particularly acute for China because of the scale of its ambition and the sensitivity of some technologies.

6.6.3 From premium to parity: the long-run goal

The third implication is that the long-run goal should be parity, not premium. The green premium is a transitional mechanism that rewards early investment. The long-run goal is to make green products cost-competitive with conventional alternatives, so that the transition does not depend on subsidies or on consumer willingness to pay.

The path to parity runs through learning curves, scale economies, and technological improvement. The policies that support the path are the ones that accelerate learning—deployment subsidies, public procurement, demonstration projects—and the ones that support scale—market integration, infrastructure investment, standards harmonization.

The Chinese experience suggests that parity is achievable in some sectors. Solar and batteries have reached or are approaching parity in many markets. Other sectors—green hydrogen, carbon capture, sustainable aviation fuel—are further from parity. The policy should be differentiated by sector: support deployment in the near-parity sectors, support R&D in the far-from-parity sectors.

6.6.4 The role of standards and certification

The fourth implication is that standards and certification are essential infrastructure for the green premium. Without credible standards, the premium cannot be captured because customers cannot verify the green attribute. Without certification, the standards cannot be enforced.

China has made progress in standards development, but the progress is uneven. The country has strong standards for some products (electric vehicles, solar modules) and weak standards for others (embodied carbon in materials, supply chain emissions). The weakness limits the capture of the premium in the sectors where standards are missing.

The policy challenge is to develop standards that are credible, comparable internationally, and usable by firms. The development requires collaboration between government, industry, and research institutions. It also requires participation in international standards bodies, so that Chinese standards are recognized abroad.

6.6.5 The role of the carbon market

The fifth implication is that the carbon market should be strengthened. A credible carbon price is the most efficient way to create a green premium, because it internalizes the environmental cost into the price of carbon-intensive products. The Chinese national emissions trading system is a start, but its price is low and its coverage is limited.

The strengthening of the carbon market requires several steps: expanding the coverage to more sectors, tightening the cap on emissions, improving the measurement and verification of emissions, and linking the market to international systems. The steps are technically complex and politically difficult, but they are necessary for the green premium to operate at scale.

The carbon market also interacts with the border adjustment. If the domestic carbon price is comparable to the EU's, Chinese exporters can deduct the domestic price from the border charge, avoiding a double burden. If the domestic price is lower, the exporters pay the difference. The interaction gives China an incentive to strengthen its carbon market, both to protect its exporters and to align with international norms.

6.7 Conclusion: The Premium as a Bridge

The green premium is a bridge between the current economy and a decarbonized one. It rewards the firms that invest in green technology before the technology is cost-competitive, and it provides the resources for further investment. The bridge is not permanent; as the technology matures and the costs fall, the premium shrinks and eventually disappears. But during the transition, the premium is the mechanism that allocates investment and guides the industry toward the low-carbon future.

For Chinese technology-intensive industries, the premium has been a real source of value. The firms that have captured it—the battery makers, the solar manufacturers, the power electronics firms—have used it to build capabilities, to expand capacity, and to move up the value chain. The premium has not been the only source of value; cost leadership and scale have also mattered. But the premium has been the reward for the green investments that made the cost leadership possible.

The premium has also been a source of tension. It has favored the large firms over the small, the incumbents over the new entrants, the export-oriented firms over the domestic ones. The tension is not unique to China; it is inherent in the market-based approach to decarbonization. The policy challenge is to manage the tension—to ensure that the premium rewards innovation without entrenching privilege, and that the transition is just as well as efficient.

The contrast with capital-intensive industries will sharpen the book's argument about differentiated pathways. In steel, cement, and chemicals, the assets are large, the product cycles are long, and the green premium is harder to capture. The transition there is slower, more capital-intensive, and more dependent on policy. The cost gap for green steel, for example, is estimated at 20 to 50 percent above conventional steel in 2023, depending on the production route and the price of hydrogen. No market premium of that size exists. The premium must be created by policy, and the policy must be sustained over decades.

The engineers in the Pearl River Delta lab do not think about any of this. They think about how to make a better battery. Yet their work is the substance of the value chain climbing that this book describes. The climb is not an abstraction; it is the accumulation of thousands of small improvements, each of which makes the product cheaper, better, and greener. The premium is the market's recognition of that accumulation. The capability is the accumulation itself. The firms that have built the capability are the ones that will climb, premium or no premium, because the capability is what allows them to compete in the markets that the transition is creating.

The reader who has followed the argument to this point may ask: is the green premium a cause of climbing or a consequence? The answer is both. The premium rewards the firms that have climbed, and the reward funds the next climb. The causality is circular, and the circle is virtuous for the firms inside it. The policy question is how to bring more firms inside—how to build the capabilities that allow them to climb, and how to create the markets that reward the climb. That is the subject of the remaining chapters.