Silicon carbide (SiC) semiconductors are critical enablers of high-efficiency power electronics, essential for the global transition to electric vehicles (EVs), renewable energy infrastructure, and advanced industrial applications. The superior performance of SiC over traditional silicon in managing high voltages and temperatures has created an exponential increase in demand. However, the global SiC supply chain is characterized by significant bottlenecks and high barriers to entry. The most critical constraint resides in the production of high-quality SiC substrates and wafers, a complex and capital-intensive process. The industry-wide transition from 150mm to 200mm wafers is a pivotal step for achieving economies of scale, with the potential to reduce unit costs by as much as 35%.¹
In response to supply chain vulnerabilities, major economic blocs have launched ambitious industrial policies to bolster domestic production. The United States’ CHIPS and Science Act, the European Chips Act, and China’s “Made in China 2025” initiative are directing tens of billions of dollars into localizing semiconductor manufacturing. These policies are actively reshaping the competitive landscape, incentivizing massive capacity investments and intensifying competition among key firms such as Infineon, STMicroelectronics, and Coherent.²,³ This paper aims to identify the strategic vulnerabilities and investment opportunities arising from these dynamics.
By analyzing the interplay of industrial policy, corporate investment strategies, and technical challenges within the SiC wafer manufacturing segment, this study provides a forward-looking assessment of the risks and opportunities for industry stakeholders.
The strategic importance of compound semiconductors, including SiC and Gallium Nitride (GaN), has been well-established in the context of next-generation power electronics. These materials are critical for high-voltage applications, forming the basis of advanced power modules in EVs and other green technologies.³ Historically, the SiC supply chain has been defined by significant technical hurdles and a concentrated market structure. The production of SiC wafers begins with the synthesis of high-purity SiC powder, a supply chain segment vulnerable to geographic concentration, with over 80% of production capacity located in just five countries.⁴
The core of SiC substrate manufacturing is the crystal growth stage, predominantly achieved through the Physical Vapor Transport (PVT) method. Growing large-diameter, high-quality SiC crystals, or boules, is notoriously difficult. Scaling from 150mm to 200mm wafers introduces significant challenges in maintaining thermal and stoichiometric uniformity across a larger surface area, which increases the probability of performance-inhibiting defects.⁵ Thermal stress, arising from temperature gradients during the PVT process and the cooling phase, is a primary cause of dislocation generation, particularly Basal Plane Dislocations (BPDs).⁶ Research has shown that carefully controlling and reducing these thermal gradients can lower BPD density by an order of magnitude, a critical step toward improving wafer quality.⁷
Despite such advancements, defect density remains a persistent quality challenge in the SiC market, with commercial wafers exhibiting 100-200 defects per square centimeter—a high figure compared to mature silicon standards that directly impacts manufacturing yield and device reliability.⁸ To address this, non-destructive inspection methods like Scanning Acoustic Microscopy (SAM) have become essential for 100% inspection of SiC boules, with modern systems capable of detecting defects as small as 50 microns.⁹ Concurrently, research into more sustainable production methods, such as converting industrial silicon waste into high-purity SiC powder, offers a potential pathway to reduce both costs and the environmental impact of the conventional Acheson process.¹⁰ The existing literature thus highlights a technology defined by high market demand, significant manufacturing complexity, and persistent quality challenges, setting the stage for a competitive race centered on scaling production and improving yield.
This section presents the key findings from the study, analyzing how industrial policies, capacity investments, and market dynamics are reshaping the global SiC supply chain. It highlights emerging vulnerabilities, competitive shifts, and the strategic implications for industry stakeholders.
The global SiC supply chain has become a key arena for geopolitical competition, with major economies deploying substantial industrial policies to secure domestic capabilities. In the United States, the CHIPS and Science Act provides direct funding and investment tax credits to onshore semiconductor manufacturing. A prominent example is the memorandum of terms for up to $750 million in direct funding to Wolfspeed to support the construction of its 200mm SiC ecosystem in North Carolina and New York.¹¹ The European Union, through its European Chips Act, aims to double its global semiconductor market share to 20% by 2030. The Act’s ‘Security of Supply’ pillar specifically supports the establishment of vertically integrated manufacturing centers and ‘first-of-kind’ projects, including the production of novel substrate materials like SiC and GaN.¹²
China’s efforts are the most expansive, driven by the “Made in China 2025” strategy and its 14th Five-Year Plan, which designates compound semiconductors as a development priority.¹³ This strategy is financed by the state-led National Integrated Circuit Industry Investment Fund (the “Big Fund”), which has mobilized successive rounds of massive capital injections, including $19 billion in 2014 and $29 billion in 2019,¹⁴ and a further $47.5 billion in 2024.¹⁵ While earlier phases focused on manufacturing capacity, the most recent fund has pivoted to target technological chokepoints like advanced equipment and design software.¹⁵ This sustained, state-directed investment has enabled a dramatic expansion of China’s domestic SiC industry.
In response to soaring demand and policy incentives, major firms have announced massive investments aimed at scaling 200mm SiC wafer production. Infineon Technologies is investing up to €5 billion to build the world’s largest 200mm SiC power fab in Kulim, Malaysia, backed by €5 billion in customer commitments and aiming for a 30% market share by 2030.¹⁶ Similarly, Coherent has accelerated its expansion plans, aiming for an annual output equivalent to one million 150mm substrates by 2027, including volume production of 200mm wafers.²
However, the path to 200mm scale is fraught with financial and technical risk, as exemplified by the trajectory of Wolfspeed. As a first-mover, the company made significant investments in vertical integration and the construction of its 200mm Mohawk Valley fab. These efforts led to severe financial pressure, with the company reporting a net loss of $329.9 million in fiscal year 2023, heavily impacted by $160.2 million in factory start-up and underutilization costs.¹⁷ Despite being a market leader and a beneficiary of CHIPS Act funding, the company’s struggles with manufacturing yields and immense capital burn culminated in it filing for bankruptcy protection in July 2025.¹⁸ This event underscores the immense challenges of scaling this complex technology.
China’s industrial policy has successfully cultivated a formidable domestic SiC industry that is rapidly reshaping the global market. In 2024, Chinese suppliers TanKeBlue and SICC captured the second and third largest shares of the SiC substrate market with 17.3% and 17.1% respectively, trailing only Wolfspeed (33.7%) and surpassing Coherent (13.9%).¹⁹ This rapid expansion led to a significant oversupply in the 6-inch substrate market, causing prices to collapse to US$350 per piece, below the estimated breakeven point of US$400.¹⁸ This pricing pressure is evident across the market; a 6-inch wafer from Wolfspeed that cost $1,500 two years prior was being offered for as low as $500 by Chinese competitors in early 2025.²⁰
To manage this disruption and pivot to higher-value production, the Chinese government has reportedly issued licenses for 8-inch (200mm) SiC fab operations to a select group of eight to nine companies, including SICC, Tankeblue Semiconductor, and Sanan Optoelectronics, protecting them from the intense competition seen in the 6-inch market.¹⁸ Western firms are also adapting to this new reality. STMicroelectronics has pursued a “China-for-China” strategy, entering a $3.2 billion joint venture with Sanan Optoelectronics to build a 200mm SiC device facility in Chongqing, targeting the local EV market with production expected to begin in late 2025.²¹,²² This move highlights a strategic necessity to establish a local presence to compete effectively within China’s burgeoning market.
This section interprets the findings in the context of broader industry dynamics, examining the trade-offs between technological leadership, financial viability, and geopolitical strategy. It further explores the strategic vulnerabilities and opportunities that shape the future trajectory of the SiC supply chain.
The findings illustrate a fundamental tension between technological leadership and financial viability in the SiC industry. Wolfspeed’s bankruptcy serves as a critical case study. The company’s strategy of aggressive vertical integration and pioneering 200mm production, while technologically ambitious, exposed it to immense financial risk from high start-up costs and poor initial manufacturing yields.¹⁷,¹⁸ In contrast, competitors like Infineon appear to have mitigated risk through substantial customer pre-payments and by building capacity in lower-cost regions like Malaysia.¹⁶ The episode suggests that being a first-mover in such a capital-intensive field carries extraordinary risk, which can be fatal without a sufficiently robust financial structure or a state-backed safety net. China’s state-supported model, which absorbs initial losses and prioritizes market share over short-term profitability, presents a formidable challenge to the business models of publicly traded Western firms.
The analysis reveals several strategic vulnerabilities across the SiC supply chain. First, the geographic concentration of high-purity SiC powder production remains a point of concern, creating potential supply risks that industrial policies in North America and Europe are attempting to mitigate through subsidies.⁴ Second, the immense capital expenditure required for 200mm fabs creates high barriers to entry and exposes existing players to significant financial risk, as seen with Wolfspeed. The state-driven overcapacity in China, particularly in mature nodes, is projected to create sustained pricing pressure globally, potentially rendering unsubsidized Western fabs uncompetitive.²³
Despite these risks, significant opportunities exist. The transition to 200mm wafers promises to reduce unit costs by as much as 35%, unlocking wider market adoption if technical hurdles can be overcome.¹ Investment in technologies that address the core challenge of defect density—such as advanced PVT growth process controls and improved inspection methods—presents a clear opportunity for creating durable competitive advantage.⁷,⁸,⁹ Furthermore, innovations in sustainable raw material production, such as the NSF-funded research to create SiC powder from industrial waste, could offer a disruptive pathway to lower costs and improve the environmental credentials of the supply chain.¹⁰ Finally, strategic partnerships, like the STMicroelectronics-Sanan joint venture, provide a pragmatic model for Western firms to access the vast Chinese market while mitigating the risks of direct competition with state-backed entities.²¹
Industrial policy is no longer a background condition but an active and disruptive force shaping the SiC market. The CHIPS Acts in the U.S. and EU are designed to re-level the playing field against decades of state-led investment in Asia. However, China’s strategy has already achieved a significant outcome: transforming the SiC substrate market from a high-margin specialty product into a sector characterized by intense price competition and looming commoditization, at least in the 150mm segment.²,¹⁸ The Chinese government’s controlled rollout of 200mm licenses suggests a more strategic approach to prevent a similar price collapse in the next-generation market, aiming to build a sustainable and dominant domestic industry.¹⁸ This policy-driven dynamic forces global firms to not only compete on technology and cost but also on their ability to align with and leverage national strategic interests.
The global effort to localize the silicon carbide supply chain has ignited an intense and transformative period of competition. Driven by ambitious industrial policies in the U.S., EU, and China, the industry is undergoing a rapid capacity expansion centered on the challenging but critical transition to 200mm wafers. This analysis demonstrates that while these policies are successfully stimulating investment, they are also introducing significant market distortions, including severe price wars and strategic overcapacity. The rapid rise of Chinese suppliers, backed by massive state funding, has fundamentally altered the competitive landscape, leading to the collapse of a Western market pioneer and forcing competitors to adopt new strategies, such as onshore partnerships within China.
The primary vulnerability remains the immense technical and financial challenge of producing high-quality, low-defect 200mm SiC wafers at scale. The company or nation that can master this process will gain a significant competitive advantage. Moving forward, success in the global SiC market will depend not only on technological prowess but also on financial resilience and the strategic navigation of a complex geopolitical environment. Future research should focus on the long-term efficacy of industrial subsidies on market health, the development of novel crystal growth technologies to overcome fundamental material defects, and the emerging structure of a potentially bifurcated global semiconductor supply chain.
