April 9, 2026 - Industry in-depth review data shows that the energy storage PCS (Power Conversion System) sector has witnessed a revolutionary technological breakthrough this year. Silicon carbide (SiC) technology has transitioned from demonstration applications to large-scale deployment, marking what the industry recognizes as the "first year of SiC PCS mass adoption." With the widespread adoption of large-capacity battery cells like 587Ah and the promotion of 2000V high-voltage architectures, the limitations of traditional silicon-based IGBT devices in terms of loss and stability have become evident. Leveraging advantages such as low switching loss, high voltage tolerance, and high efficiency (system efficiency exceeding 99%), SiC devices have emerged as the core choice for next-generation energy storage systems.

Leading companies such as Sungrow, Tesla, and BYD have already introduced products equipped with SiC PCS. The penetration rate of SiC PCS in the large-scale energy storage sector is expected to exceed 10% by 2026. Meanwhile, PCS functionality is undergoing upgrades, with grid-forming PCS featuring VSG (Virtual Synchronous Generator) capabilities gradually becoming standard. These enable seamless millisecond-level switching between islanded and grid-connected modes, meeting the 99.99% high-availability power supply demands of high-end applications like AI data centers. Although SiC PCS still faces challenges such as high costs and insufficient reliability verification, continued supply chain improvements and technological maturation are expected to accelerate the replacement of traditional silicon-based products, driving energy storage systems toward higher efficiency and intelligence.