Power SiC/GaN Compound Semiconductor Market Monitor

Key features

Power SiC and GaN markets continue expanding, driven by EV electrification, consumer electronics, and emerging AI datacenter demand. Despite short-term BEV slowdown and SiC overcapacity concerns, recovery from 2026 and supply chain realignment in GaN will support strong long-term growth.

Power SiC leaders faced limited growth amid the automotive slowdown, while UNT, Bosch, and Rohm strengthened their top-5 positions. In Power GaN, supply chain diversification and new applications in datacenters and automotive enabled players like Infineon and Renesas to gain market share.

Full-SiC modules dominate high-power EV inverters, with 1200V devices enabling the shift toward 800V BEVs. In GaN, discrete devices address high-power needs while integrated GaN ICs drive compact chargers. Emerging technologies like BDS and vertical GaN target future high-efficiency power systems.

Product objectives

• Quarterly update of the data
• Market forecast through 2031 in M$US for devices, wafers and epiwafers and units for wafers and epiwafers for Power SiC and Power GaN
• Market forecast through 2031 by market segment including automotive, consumer, telecom and energy in M$US revenue 
• Market forecast breakdown by technology including discrete, module and wafer size
• Market players profiles at device, epiwafer and wafer level for Power SiC and Power GaN including STMicroelectronics, Wolfspeed, ROHM, Infineon, Onsemi, Resonac, SICC and Coherent for SiC and Infineon, EPC, Power Integrations, Renesas, Navitas and Innoscience for GaN. 

Power SiC and GaN Growth Driven by EV Electrification, Consumer Electronics, and Emerging AI Power Demands

SiC and GaN are continuing their rapid growth, which started in 2018-2019, with different drivers. Initially, disruptive car maker Tesla adopted SiC in its inverters and remains the market leader in this category. More OEMs have launched high-volume shipment BEVs, such as BYD and Hyundai in the past few years. Another trend is reshaping the electric vehicle (EV) market, namely fast 800V EV charging. Following the BEV slowdown in 2024  and 2025, leading players’ revenue is impacted, such as for STMicroelectronics, onsemi. Supply chain evolution and consolidation also occur regarding the dynamic SiC industry. A recovery in 2026 and 2027 is expected to drive Power SiC market to the level beyond $10B in the next 5 years.

Meanwhile, consumer applications continue to be the primary driving forces behind the growth of Power GaN market. Recent trends encompass higher power capacities for chargers reaching up to 300W, as well as home appliance power supplies and motor drives bringing better efficiencies and compactness. In addition to the consumer sector, we anticipate two additional growth catalysts for Power GaN: automotive and data center applications, which are poised to elevate the device market beyond $3 billion by 2031. The adoption of GaN in data centers began accelerating in 2025 and is expected to continue rising to meet the increasing power demands of advanced AI systems.

 

SiC Capacity Expansion, Inventory Dynamics, and Power GaN Supply Chain Realignment

Following the announcements of various SiC players in the past few years, we’ve seen the capacity across the supply chain growing faster than the demands. It includes the 8” transition for the next years. However, the continuing BEV slowdown since some quarters ago keeps the visibility of the market demand unclear, and players adapt it with their plannings modification for more cautious cashflow management.
In parallel, the inventory at each level of supply chain is one of the key indicators to overlook the market. At wafer and epiwafer levels, different trends of shipment linked to 6” and 8” are identified. As most major device manufacturers are working on the 8” qualification, the shipment is associated with both market demand and qualification needs. 
Besides the expected recovery regarding the 800V BEV ramp-up and the increasing penetration in various industrial applications, AI data centers are also the targeted market for players. In this Monitor, we provide the latest update of the end-market dynamics, capacity expansion planning and the highlight of key players’ actions, along with our 5-year forecast.   

In the Power GaN market, TSMC’s decision to exit the GaN foundry business has triggered a realignment of supply chains, forcing companies that relied on its platform to migrate production, internalize manufacturing, or seek alternative foundry partners. In response, several players are expanding their foundry capabilities: VIS and GlobalFoundries have licensed GaN technology from TSMC and other foundries are positioning themselves to capture emerging demand. At the same time, major IDMs such as Infineon and Rohm are moving toward more vertically integrated GaN manufacturing strategies to secure wafer supply.
In parallel, a growing number of reference designs and prototypes are emerging in automotive and datacom applications—such as high-efficiency power supplies for AI datacenters. Together, these factors are expected to accelerate the Power GaN market growth to roughly $3.5 billion in the next few years. 

 

 

About the authors
Power electronics market segments
Companies tracked in CS Monitors
3-Page summary
Compound semiconductor-based comparative analysis in power electronics

• Power devices as a function of power and frequency 
• Power device market revenues : SiC vs. GaN vs Silicon

Power SiC – Changes since the previous quarter and what to look out for in coming quarters

• What has happened since the last edition?
• Delay of capacity expansion in SiC device 
• SiC EV shipment in the past 5 quarters
• What to look out for

Power SiC market overview

• Power SiC device market dynamics 
• Quarterly power SiC device revenue
• Open power SiC epiwafer market dynamics
• Quarterly open power SiC epiwafer revenue
• Power SiC wafer market dynamics
• Quarterly power SiC wafer revenue
• Power SiC device revenue
• Power SiC epiwafer shipments
• Power SiC epiwafer revenue
• Power SiC wafer shipments
• Power SiC wafer revenue
• Power SiC wafer pricing
• Power SiC epiwafer pricing 

Power SiC market forecasts

• Power SiC device market by segment
• Power SiC device market shares by segment
• Open power SiC epiwafer market by segment
• Open power SiC epiwafer market shares
• Power SiC wafer market by segment
• Power SiC wafer market shares by segment

Power SiC technology

• Power SiC device market shares by device type ($M)
• Power SiC bare die device market by device type ($M)
• Power SiC device revenue forecast by operating voltage ($M)
• Power SiC wafer revenue by wafer size ($M)
• Power SiC wafer volume by wafer size (Units)
• Open power SiC epiwafer market by wafer size ($M)
• Open power SiC epiwafer market by wafer size (Units)

Power SiC supply chain and players

• Supply chain and business models
• Supplier capacity 
• Focus on the Chinese power SiC ecosystem

Power SiC players - Device

• STMicroelectronics  - Power SiC device revenue
• Wolfspeed - Power SiC device revenue
• ROHM  - Power SiC device revenue
• Infineon  - Power SiC device revenue
• onsemi  - Power SiC device revenue

Power SiC players - Epiwafer

• Wolfspeed  - Power SiC epiwafer revenue
• Resonac  - Power SiC epiwafer revenue

Power SiC players – Wafer

• Wolfspeed – Power SiC wafer revenue
• Coherent  - Power SiC wafer revenue

Power GaN: changes since the previous quarter
Power GaN market overview

• Power GaN device market dynamics
• Quarterly power GaN device revenue
• Open power GaN epiwafer market dynamics
• Quarterly power GaN epiwafer revenue
• Open Power GaN epiwafer revenue
• Open and captive power GaN epiwafer shipments
• Open power GaN epiwafer shipments
• Power GaN epiwafer pricing

Power GaN market Forecasts

• Power GaN device market by segment
• Power GaN device market shares
• Open power GaN epiwafer market by segment
• Open power GaN epiwafer market shares

Power GaN technology

• Power GaN device market by device type
• Power GaN bare die market by device type 
• Power GaN device market forecast by rated voltage ($M)
• Power GaN device market by technology platform ($M)
• Open power GaN epiwafer shipments by wafer type (in units)
• Open power GaN epiwafer shipments by wafer size (in units)
• Power GaN wafer shipments by wafer size (in units)

Power GaN supply chain and players

• Supply chain and business models
• Focus on the Chinese Power GaN ecosystem
• Supplier capacity 
• Power GaN business
• Innoscience - Power GaN device revenue
• Power Integration- Power GaN device revenue
• Navitas - Power GaN device revenue
• EPC - Power GaN device revenue
• Renesas - Power GaN device revenue
• Infineon  - Power GaN device revenue

Power GaN: what to look out for in coming quarters
Yole Group presentation

Coherent, EPC, GaN systems, Infineon, Innoscience, IQE, Navitas, onsemi, Power Integrations, ROHM, Resonac, Renesas, SICC, STMicroelectronics, Sumitomo Electric, Wolfspeed and more.