Summary of Key Points from the Conference Call Industry Overview - The conference call focuses on the HVDC (High Voltage Direct Current) technology and its application in the power supply industry, particularly in data centers driven by AI development [1][10]. - The overall power supply market is projected to reach between 70 billion to 80 billion RMB by 2026, which is approximately half the size of the optical module market [2]. Core Insights and Arguments - **HVDC Technology Advantages**: - HVDC technology offers higher conversion efficiency, smaller space requirements, greater reliability, and more flexible voltage regulation compared to traditional UPS systems. It is particularly suitable for applications where single cabinet power exceeds 150 kW [1][8]. - The penetration rate of HVDC is expected to grow rapidly, with significant demand anticipated in overseas markets, particularly as new data centers are expected to adopt HVDC solutions by 2027 [1][10]. - **Market Demand and Growth**: - The demand for HVDC systems is urgent in overseas markets, with projections indicating that by the second half of 2026, single cabinet power will reach 200-300 kWh, necessitating the use of HVDC technology [1][14]. - The market space for HVDC is substantial, with expected installation capacities of around 20 GW in 2026 and 30 GW in 2027, translating to a market value of over 100 billion RMB in 2026 and potentially exceeding 500 billion RMB in 2027 [14]. - **Company Strategies and Performance**: - **Zhongheng Electric**: As a leading domestic HVDC company, it is actively expanding into overseas markets through partnerships and joint ventures, with expectations of doubling its performance [1][15]. - **Kehua Data**: The company is experiencing growth in its core business and has made significant strides in HVDC technology, with potential contracts that could significantly boost its revenue [17][18]. - **Kostad**: The company has validated its outsourcing capabilities in the energy storage sector and is now focusing on HVDC module manufacturing, aiming to capture a significant market share [19][22]. Other Important Insights - **Challenges for Chinese Companies**: - Chinese companies face challenges in penetrating the global HVDC market, primarily due to established competitors like Vertiv and Schneider. However, companies like Maimi and Oulutong are gradually transitioning from secondary to primary power supply roles, which may enhance their market potential [6]. - **Technological Transition**: - The transition from UPS to HVDC is becoming increasingly evident, with major companies like Alibaba and Tencent moving towards HVDC solutions [4][10]. - **Future Projections**: - The HVDC market is expected to see a significant increase in penetration rates, with estimates suggesting that by 2026, the overseas market penetration could reach 30%, and by 2027, new data centers will predominantly utilize HVDC solutions [12][14]. - **Investment Opportunities**: - The current adjustment period in the power supply market is viewed as an opportune time for investment, particularly in companies with strong order backlogs and growth potential [2]. This summary encapsulates the key points discussed in the conference call, highlighting the promising future of HVDC technology and the strategic movements of key players in the industry.

Summary of SST Solid-State Transformer Conference Call Industry Overview - The data center power supply architecture is evolving from traditional UPS to HVDC and SST to reduce AC-DC conversion losses and improve energy efficiency [1][2] - SST utilizes high-frequency electronic transformers to replace traditional power frequency transformers, significantly enhancing efficiency and reducing footprint [1] Key Points and Arguments - **Efficiency and Space Reduction**: SST can reduce the footprint by nearly three times compared to traditional UPS for a 2 MW power requirement, with construction cycles shortened from 12 months to approximately one quarter [1][4] - **Cost Structure**: The current cost per watt for SST is around 7-8 RMB, expected to stabilize at 5-6 RMB post-mass production. The main cost components include power devices (40%-50%), high-frequency transformers (25%), and low-voltage DC circuit breakers (10%) [1][6][9] - **Market Dynamics**: The overseas SST market is dominated by joint ventures like Hitachi Energy, ABB, Eaton, and Schneider, while domestic players include China XD Group and TBEA [1][11] - **Future Projections**: By 2030, Schneider anticipates shipping 1,000 SST units in China, with an overall market size expected to reach 10,000 units and a total capacity of approximately 30 GW [1][11] Cost Comparison - **SST vs. Traditional Solutions**: SST costs are approximately 2 to 4 times higher than traditional UPS due to supply chain complexities and labor costs in the U.S. [2][13] - **Domestic vs. Overseas Pricing**: Domestic UPS averages 0.5-0.6 RMB per watt, while joint venture brands are around 1 RMB per watt. HVDC offers a 20%-30% premium over traditional UPS [6][9] Technological Advancements - **Third-Generation SST**: This generation further enhances efficiency through the use of silicon carbide and gallium nitride power devices, reducing energy loss and fault rates [3][10] - **Technical Barriers**: Key barriers include rectification processes, electromagnetic compatibility, thermal management, and supply chain management for high-frequency transformers and semiconductor devices [17][18] Market Entry Strategies - **Domestic Firms in North America**: To penetrate the North American market, domestic firms should consider entering through low-voltage distribution products, as seen with Jinpan and Igor's progress in distribution transformers [19] - **Partnerships and Collaborations**: Companies like Schneider and Eaton are actively seeking partnerships to enhance their technology offerings, particularly in liquid cooling and HVDC [21][22] Demand and Supply Insights - **Major Demand Players**: Companies like Microsoft and Meta show significant interest in SST technology, while Google prefers traditional HVDC architectures [23] - **Supply Chain Dynamics**: The supply chain is characterized by a mix of domestic and joint venture companies, with a focus on integrating new technologies into existing frameworks [11][12] Conclusion - The SST industry is poised for growth, with expectations of reaching G-Watt scale by 2026-2027, driven by increasing interest from major tech companies and advancements in technology [23]

Summary of AIDC HVDC Expert Exchange Call Industry Overview - The discussion centers around the **HVDC (High Voltage Direct Current)** power supply systems and their advantages over traditional **UPS (Uninterruptible Power Supply)** systems in data centers, particularly as data centers evolve towards high-performance GPU and ASIC servers [1][2][4]. Key Points and Arguments 1. **Efficiency Comparison**: Traditional UPS systems incur energy losses due to AC-DC-AC conversion, while HVDC systems only require AC-DC conversion, leading to approximately a 1% efficiency improvement, especially in high-power applications [1][2][5]. 2. **Power Demand Increase**: By 2025, GPU and ASIC servers are expected to exceed 100 kW per cabinet, making traditional UPS and low-voltage HVDC inadequate. This necessitates an increase in power system voltage to meet output power demands [1][4]. 3. **Cost Implications**: The cost of adopting HVDC systems is projected to be 30%-50% higher than existing UPS systems for ±400V HVDC, and 20%-30% higher for 800V HVDC systems [3][16]. 4. **Operational Cost Savings**: A 1% increase in power supply efficiency is crucial for large data centers, as electricity costs are the primary operational expense over a 10-15 year lifecycle. Improved efficiency also reduces cooling energy consumption, enhancing overall data center performance metrics like PUE (Power Usage Effectiveness) [5][6]. 5. **PUE Definition**: PUE is a key metric for data center efficiency, with values closer to 1 indicating better efficiency. A typical good PUE value is around 1.2, meaning 20% additional energy is used for cooling and power supply systems [6]. Future Developments 1. **Upcoming HVDC Systems**: NVIDIA plans to release an 800V VDC system in May 2025, with other major companies like Meta, Google, and Microsoft defining ±400V HVDC systems expected to ship in Q1 2026 [1][7]. 2. **Transition to HVDC**: CSPs (Cloud Service Providers) are expected to gradually transition to ±400V HVDC systems for their server and HGX screen purchases post-2026 [7][10]. 3. **Mixed Power Supply Systems**: Data centers operated by Meta, Google, and Microsoft will utilize a hybrid approach, incorporating both ±400V HVDC and traditional power cabinets [10]. Technical Insights 1. **System Architecture Differences**: ±400V HVDC operates on a three-wire system compatible with existing 400V PSU, while 800V HVDC uses a two-wire system requiring updated PSU support [3][11]. 2. **Power Supply Unit (PSU) Requirements**: The PSU power requirements for ±400V systems will be 12 kW or 18 kW, depending on the server capacity, with older 5.5 kW units becoming obsolete [12]. 3. **Core Components of HVDC Systems**: Key electrical components include power devices (MOSFETs, diodes), magnetic devices (capacitors, inductors), and control devices, with the highest costs associated with power and distribution devices [20]. Market Dynamics 1. **Supplier Landscape**: Major suppliers for HVDC systems include Eaton, Schneider, and Vertiv, with potential for Delta to join. These companies are primarily involved in manufacturing UPS and PSU equipment [19]. 2. **Domestic Participation**: Chinese companies currently play a role in the supply chain but mainly as OEMs, with limited involvement in system-level development. Future opportunities for collaboration in module development may arise [23]. Challenges and Opportunities 1. **Transition Challenges for UPS Manufacturers**: Established UPS manufacturers like Vertiv and Schneider face challenges in transitioning to HVDC due to differences in application and design, despite having relevant technical expertise [26]. 2. **PSU Manufacturers' Position**: Domestic PSU manufacturers are well-positioned to transition to HVDC, but face challenges in market entry, particularly in North America, due to the need for familiarity with local user requirements [27]. Conclusion The shift towards HVDC systems in data centers is driven by the need for higher efficiency and power capacity to support advanced computing technologies. The transition presents both challenges and opportunities for existing power supply manufacturers and new entrants in the market.