Group 1 - The article highlights the successful implementation of Jiangsu's first 8-hour commercial long-duration energy storage project by Weiheng Intelligent Technology Co., Ltd., which serves as a model for the development of commercial energy storage under the electricity market reform [3][7] - The project, located at Suzhou Jingzheng New Materials Technology Co., Ltd., features a 5MW/40MWh energy storage system designed to alleviate high electricity costs during peak production hours, specifically from 14:00 to 22:00 [3][5] - The system utilizes Weiheng Intelligent's proprietary WHES OS smart energy management platform for intelligent scheduling, optimizing charging and discharging strategies based on solar output, load characteristics, and electricity price signals [5][9] Group 2 - The strategic value of the project lies in its alignment with Jiangsu's latest electricity market reform direction, which shifts from fixed time-based pricing to market-driven pricing, allowing independent storage to participate in trading as both a generator and a consumer [7][8] - The transition to a market-based pricing mechanism poses challenges for traditional energy storage models, necessitating a shift towards long-duration storage systems (4 hours and above) that can adapt to structural changes in time-of-use pricing [8][9] - The 5MW/40MWh project has successfully integrated into the medium- and long-term trading system, demonstrating the viability of long-duration storage as a solution to the challenges posed by narrowing price differentials [8][9] Group 3 - The article discusses the advantages of 4-hour and longer energy storage systems, which can effectively address the structural adjustments in time-of-use pricing policies, providing flexibility to cover extended peak pricing periods and enhancing supply stability [8][9] - Various companies are launching 4-hour and longer energy storage solutions tailored for commercial applications, indicating a growing market trend towards these systems [10] - A table is provided detailing several 4-hour commercial energy storage systems from different companies, showcasing their capacities and features, which highlight the competitive landscape in the energy storage sector [11]

Core Insights - The article discusses the recent policy changes in China's renewable energy sector, particularly focusing on the commercial energy storage (工商储) market and how companies can adapt to these changes to find certainty in an uncertain environment [1][3]. Policy Changes - In early 2025, China introduced a series of renewable energy policies aimed at creating a new energy system and power structure, including the "136 Document" which emphasizes market-driven pricing for renewable energy [1]. - The "136 Document" prohibits the requirement of energy storage for new renewable projects, promoting a market-oriented approach to energy pricing [1][3]. Commercial Energy Storage Market - Commercial energy storage refers to systems deployed in non-residential settings, focusing on load management and energy efficiency [3]. - The 2021 guidelines aimed for commercial energy storage to transition from initial commercialization to large-scale application by 2025 [3]. - The 2024 notification improved the profitability model for commercial energy storage, necessitating faster adaptation to market dynamics [3]. Solutions and Innovations - The company introduced a dual-circulation solution during the SNEC exhibition, which includes six profit growth engines such as peak-valley arbitrage and demand-side response [3]. - The energy storage cabinets developed by the company utilize a self-developed microgrid controller for real-time interaction with the EnOS energy management platform, optimizing local electricity revenue [4]. User Empowerment - The company aims to create effective commercial energy storage products by leveraging industry insights and a systematic evaluation approach termed the "Yuanjing Formula" [5]. - The "Yuanjing Formula" focuses on maximizing investment returns by considering multiple factors such as energy value, conversion efficiency, and safety [5][6]. Long-term Strategy - The company emphasizes a user-centered long-term strategy, aiming to provide comprehensive solutions that address financing and operational challenges for energy storage investments [8]. - The "Yiqi Storage" model has been launched to facilitate partnerships and enhance service networks across various regions, promoting energy cost optimization and green transformation [8]. Market Evolution - The competition in the commercial energy storage sector is evolving from simple peak-valley arbitrage to complex virtual power plants, marking a shift from policy-driven to market-driven dynamics [9].