On April 9, 2026, the industrys in-depth review data showed that since this year, the energy storage PCS (energy storage converter) industry has ushered in a revolutionary breakthrough in technology, and silicon carbide (SiC) technology has moved from demonstration application to large-scale landing, which has been recognized by the industry as "the first year of large-scale landing of silicon carbide PCS". With the popularization of large cells such as 587Ah and the promotion of 2000 V high-voltage architecture, the loss and stability bottlenecks of traditional silicon-based IGBT devices are highlighted. With the advantages of low switching loss, high withstand voltage and high efficiency (system efficiency exceeds 99%), silicon carbide devices have become the core choice of the next generation of energy storage systems. At present, leading companies such as Sunshine Power, Tesla and BYD have taken the lead in introducing products with SiC PCS, and the penetration rate of SiC PCS in the field of large storage is expected to exceed 10% in 2026. At the same time, the PCS function has been upgraded, and the network-based PCS with VSG (Virtual Synchronous Generator) function is gradually becoming standard, which can achieve seamless switching between millisecond and grid-connected, and meet 99.99% of the high-availability power supply needs of high-end scenarios such as AI data centers. Although silicon carbide PCS is still facing bottlenecks such as high cost and insufficient reliability verification, with the improvement of supply chain and maturity of technology, it is expected to accelerate the replacement of traditional silicon-based products and promote the upgrading of energy storage system to high efficiency and intelligence.