Core Viewpoint - Long-duration energy storage is crucial for addressing the intermittency of renewable energy and ensuring energy security, especially in the context of China's "dual carbon" goals and the construction of a new power system [2][12][29] Group 1: Event Overview - The event titled "Exploring Huairou Science City: In-depth Exchange on Long-duration Energy Storage Technology Innovation and Industrial Application" was successfully held, gathering nearly 80 guests from research institutions and representative enterprises [2] - The event was co-hosted by the Huairou District Science and Technology Committee, the Zhongguancun Energy Storage Industry Technology Alliance, and the Beijing Huairou Science City Construction Development Co., Ltd. [2] Group 2: Key Insights from Leaders - Chen Haisheng, Director of the Institute of Engineering Thermophysics at the Chinese Academy of Sciences, emphasized the need for breakthroughs in core material performance and system integration costs in long-duration energy storage technologies [12] - Lan Xiongjing, Deputy Director of the Huairou Science City Management Committee, highlighted the achievements of Huairou Science City, which has produced 386 major scientific and technological results and is accelerating the cultivation of emerging industries such as new energy and new materials [14] - Wang Tianyi, Deputy Director of the Huairou District Science and Technology Committee, provided insights into the region's support for technological innovation and industrial integration [15] Group 3: Technical Reports - Zhou Xuezhi, a senior engineer at the Institute of Engineering Thermophysics, discussed the urgent need for long-duration energy storage solutions as renewable energy usage increases, analyzing various technologies like pumped storage, compressed air, and flow batteries [19] - Tong Lige, Secretary-General of the CNESA Thermal Energy Storage Professional Committee, reported on the rapid growth of thermal energy storage in China, with new installed capacity and power exceeding 5 GW and 26 GWh respectively over the past decade, and a projected 375% year-on-year increase in new installed capacity for 2024 [21] - Zhang Hui, Vice President of the China Datang Group Science and Technology Research Institute, shared the company's achievements in long-duration energy storage projects, with a total installed capacity of 3.597 GW and 8.666 GWh by September 2025 [23] Group 4: Collaborative Discussions - The discussion session focused on key issues such as core technology bottlenecks, policy support for the industry, application scenario expansion, and models for industry-academia-research collaboration [25] - Participants engaged in lively discussions on topics including the construction of compressed air storage projects, the application of flow battery technology, and the economic viability of thermal energy storage [25] Group 5: Future Directions - The successful hosting of this salon not only established an efficient platform for connecting research and industry but also fostered a consensus on the core directions for innovation and industrial development in long-duration energy storage [29] - The organizers aim to leverage the strategic scientific strengths of Huairou Science City to promote further technological breakthroughs, result transformation, and industrial cooperation, supporting the high-quality development of the long-duration energy storage industry [29]

Core Viewpoint - The article emphasizes the increasing importance of long-duration energy storage (LDES) technologies in stabilizing energy supply and addressing the challenges posed by high proportions of renewable energy integration into the grid, particularly in the context of China's dual carbon goals and new power system construction [2]. Group 1: Event Overview - The event focuses on innovation breakthroughs and industry-research collaboration in LDES technology to empower the construction of new power systems [3]. - Scheduled for October 24, 2025, at Beijing Huairou Science City, the event aims to gather around 80 participants [3]. Group 2: Organizational Structure - The event is organized by the Huairou District Science and Technology Committee, the Zhongguancun Energy Storage Industry Technology Alliance, and the Beijing Huairou Science City Development Co., Ltd. [4]. - The event is hosted by specialized committees within the Zhongguancun Energy Storage Industry Technology Alliance [4]. Group 3: Event Features - The event will facilitate technical exchanges by showcasing the latest research achievements in LDES from national laboratories, promoting deep connections between research institutions and enterprises [4]. - It aims to address key bottlenecks in LDES, including core material performance, system integration, cost control, and lifespan enhancement, through dialogues between academia and industry [4]. - The event will explore collaborative models that combine laboratory research outcomes with industrial needs, focusing on joint problem-solving, pilot testing, and market application [4]. - It will also match application needs with typical scenarios such as grid peak shaving and industrial park power supply, clarifying directions for technology development and industrial layout [4]. Group 4: Event Agenda - The agenda includes a visit to the Huairou Science City facilities, followed by keynote speeches and discussions on LDES technology research and applications [5]. - Notable speakers include leaders from the Chinese Academy of Sciences and representatives from major energy companies [5]. Group 5: Registration Information - Participation in the event is free, but attendees are responsible for their own transportation and accommodation [5]. - Interested parties must register by scanning a QR code before October 17, 2025 [6].

Core Viewpoint - The energy storage sector is likely entering an era of long-duration energy storage competition, driven by policies and market demands as renewable energy generation exceeds 20% of the energy mix, necessitating storage durations of 4 hours or more [1][2]. Policy and Market Developments - Multiple policies have been introduced to promote long-duration and new energy storage technologies, including requirements for renewable energy projects to incorporate 4-hour peak-shaving capabilities [2][3]. - The National Energy Administration's 2025 Energy Work Guidance emphasizes the innovation and strategic layout of long-duration energy storage technologies [2]. Current Market Dynamics - As of 2024, China's renewable energy generation is projected to reach 3.46 trillion kWh, accounting for approximately 35% of total generation, yet the average storage duration for new energy storage projects is only 2.3 hours [1]. - The demand for long-duration storage is expected to shift towards grid-side and user-side solutions due to ongoing issues with wind and solar energy curtailment [4]. Future Projections - By 2025, the long-duration energy storage market in China is anticipated to grow rapidly, with projections indicating that the share of storage systems lasting over 4 hours will increase to 21% by 2025 and 50% by 2030 [4]. - The cumulative installed capacity of long-duration energy storage in China is expected to reach approximately 230 million kW by 2030 [5]. Global Trends - The global consensus is shifting towards the necessity of long-duration energy storage, with examples from California demonstrating its effectiveness in managing peak demand [6][7]. - The average storage duration in the U.S. is currently 3.3 hours, while China's is 2.1 hours, indicating a need for improvement in storage capabilities [8]. Technology and Cost Analysis - Different energy storage technologies are suited for various applications, with pumped hydro storage currently dominating the market due to its maturity and cost-effectiveness [9][10]. - Initial investment costs for energy storage technologies vary significantly, with lithium-ion batteries being the most cost-effective at 500 RMB/kWh, followed by compressed air storage at 1,250 RMB/kWh, and vanadium flow batteries at 2,000 RMB/kWh [11][12]. Competitive Landscape - The competition between compressed air storage and vanadium flow batteries is intensifying, with compressed air storage currently having a lower levelized cost of electricity (LCOE) [14]. - The integration of different storage technologies, such as combining flow batteries with lithium iron phosphate batteries, is becoming more common to leverage the strengths of each technology [14]. Industry Challenges - Both compressed air storage and flow batteries face challenges in terms of efficiency and commercialization, with the need for further technological advancements to enhance system efficiency and reduce costs [16][17].