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2024
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05
In the optoelectronic energy storage sector, its application advantages are clear, and the penetration rate of silicon carbide devices is rising rapidly.
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Photovoltaic, wind‑power, and energy‑storage inverters have traditionally relied on silicon devices; after more than four decades of development, their conversion efficiency and power density have approached theoretical limits. Conventional silicon‑based inverters account for roughly 10% of system costs yet remain one of the primary sources of energy losses. Silicon carbide devices can be deployed in wind‑power rectifiers, inverters, and transformers, reducing energy losses and boosting efficiency while cutting weight and cost by 25% and 50%, respectively. The expanding energy‑storage value chain is further unlocking market potential for silicon carbide. As the share of intermittent, variable renewable resources—such as solar and wind—continues to grow, society’s demand for greater energy stability is rising. Energy storage has emerged as a critical solution to address resource volatility and balance supply with demand in power systems, offering substantial market prospects. Silicon‑carbide‑based energy‑storage inverters improve system efficiency by 3%, increase power density by 50%, and reduce the size and cost of passive components, enabling widespread adoption in the energy‑storage sector.
Photovoltaic, wind‑power, and energy‑storage inverters have traditionally relied on silicon devices; after more than four decades of development, their conversion efficiency and power density have approached theoretical limits. Conventional silicon‑based inverters account for roughly 10% of system costs yet remain one of the primary sources of energy losses. Silicon carbide devices can be deployed in wind‑power rectifiers, inverters, and transformers, reducing energy losses and boosting efficiency while cutting weight and cost by 25% and 50%, respectively. The expanding energy‑storage value chain is further unlocking market potential for silicon carbide. As the share of intermittent, variable renewable resources—such as solar and wind—continues to grow, society’s demand for energy stability is rising. Energy storage has emerged as a key solution to address resource volatility and balance supply with demand in power systems, offering substantial market prospects. Silicon‑carbide‑based energy‑storage inverters improve system efficiency by 3%, increase power density by 50%, and reduce the size and cost of passive components, enabling broad adoption across the energy‑storage sector.
According to TrendForce’s forecasts, global new energy storage capacity reached 29.6 GWh in 2021 and is expected to grow to 362 GWh by 2025. Meanwhile, IHS projects that global energy storage inverter capacity totaled 12.7 GWh in 2020, with the worldwide market for energy storage inverters projected at 63 GWh from 2018 to 2022. Demand projections: By 2025, the combined新增 installed capacity of wind power, solar PV, and energy storage is forecast to rise to 687 GWh, corresponding to a power‑device market size of approximately RMB 25.5 billion. With a SiC power‑device penetration rate of 50%, this implies an equivalent demand for 890,000 6‑inch wafers. Assuming a price of RMB 5,000 per 6‑inch silicon carbide wafer by 2025, the total silicon carbide wafer market would be valued at RMB 4.45 billion.
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