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FAQ

  • What are the application scenarios for large utility-scale energy storage system?

    It is primarily used on the grid side to achieve peak shaving and frequency regulation, alleviate grid congestion, enhance the grid's capacity to accommodate renewable energy, and serve as an emergency backup power source to improve the stability of regional grids.

  • What are the main cost components of building a large-scale ground-mounted energy storage system?

    The primary costs include:

    ① Equipment procurement costs (battery packs, PCS, BMS, etc.);

    ② Civil engineering and infrastructure costs;

    ③ System integration, installation, and commissioning fees;

    ④ Grid connection fees;

    ⑤ Long-term operation and maintenance costs.


  • How to ensure the safe and stable operation of large-scale energy storage power stations?

    A multi-layer protection system must be established:

    ① Select equipment with comprehensive protection functions;

    ② Configure advanced Battery Management System (BMS) and Energy Management System (EMS) for real-time monitoring;

    ③ Implement strict fire protection design standards and facilities;

    ④ Conduct regular inspections and maintenance.


  • How to handle large-scale energy storage system batteries after their service life ends?

    This involves battery echelon utilization and recycling. When battery capacity degrades below 70%, they can be evaluated for repurposing in less demanding scenarios. Ultimately, specialized institutions conduct environmentally friendly recycling to extract valuable materials.

  • How to address the impact of extreme weather (e.g., high temperatures, heavy rain) on outdoor energy storage power stations?

    ① In high temperatures, enhance heat dissipation and thermal management while closely monitoring battery temperature;

    ② During heavy rain, ensure the waterproof rating of enclosures and verify the reliability of lightning protection grounding;

    ③ Conduct comprehensive inspections and system tests after extreme weather events.

  • How do energy storage systems participate in grid frequency regulation services?

    By enabling rapid and precise charging/discharging control, the system responds to grid frequency fluctuation signals (AGC commands) and injects or absorbs power within seconds or minutes to stabilize grid frequency.

  • What is the charge-discharge efficiency of an energy storage system?

    The round-trip efficiency (from AC grid to battery and back to grid) typically ranges between 85% and 90%, depending on losses in components such as transformers and inverters (PCS), as well as the system's operating strategy.