Core Insights - The application of high-voltage direct current (HVDC) distribution technology is expected to significantly reduce energy consumption and improve power density in data centers, positioning HVDC as the future direction for AIDC power supply [1][3] - The global SST market is projected to exceed 100 billion by 2030, with SST expected to become the mainstream solution for AIDC external power supplies by 2029-2030 [1][3] Group 1: Domestic Market Insights - Domestic data center external DC power applications have advanced earlier, with two main technology routes: 240/336V modular HVDC power and Panama power, the latter showing high integration and efficiency up to 97.5% [2] - The domestic HVDC market is expected to exceed 80 billion by 2030, with a compound annual growth rate (CAGR) of approximately 122% from 2025 to 2030 [2] Group 2: International Market Dynamics - The core driver for overseas AIDC high-voltage direct current is the requirement for 800V DC power supply for the next-generation NV Rubin GPU, with significant penetration expected by 2027 [3] - The overseas HVDC market is projected to exceed 140 billion by 2030, with a CAGR of about 170% from 2025 to 2030 [3] Group 3: Technological Advancements - SST technology eliminates the need for frequency transformers, leading to significant improvements in size and efficiency, with domestic progress outpacing global developments [3][4] - International Tier 1 companies are actively seeking partnerships with domestic firms to develop HVDC power and SST solutions, indicating strong growth potential in the North American market [4] Group 4: Investment Recommendations - Key recommendations for comprehensive external power suppliers (SST + HVDC) include companies like Sungrow Power Supply and Jinpan Technology, while specific HVDC power recommendations include Zhongheng Electric and Keda Technology [5] - SST-focused recommendations include companies like Sifang Co. and China West Electric, with attention to core component manufacturers [5]