Background:

This project was implemented for a large industrial park with multiple production workshops in Shenzhen, faced mounting pressure from rising electricity costs. With the widening gap between peak and off-peak electricity tariffs, the park’s monthly energy bills consistently exceeded RMB 200,000.00, a significant portion of which was attributed to high peak-hour rates.  Traditional energy-saving measures could no longer deliver meaningful cost reductions, creating an urgent need for a smarter and more effective solution.

Key Challenges

Soaring Electricity Expenses:

Peak-hour tariffs were 3 to 5 times higher than off-peak rates, substantially impacting operational expenditures.

Limited Energy Management Capabilities:

The park lacked a digital, data-driven system to monitor and optimize electricity consumption in real-time.

Proposed Solution:

Following a detailed technical assessment, our team engineered a tailored 100kW / 723kWh energy storage system to address the client's specific needs effectively.

Design Highlights

System Configuration

Energy Storage Capacity: The system delivers 100kW PCS power and 723kWh storage capacity, enabling the industrial park to fully cover its daily peak-load period.

Battery System: The battery pack integrates 45 modular 51.2V 314Ah LiFePO4 modules with Grade A cells, providing 12000+ cycles for safe and stable long-term operation.

Distributed cabinet architecture: The system has three battery cabinets and one equipment cabinet for PCS, EMS, and auxiliaries, all IP55-rated to ensure a compact, robust, and easy-to-install design for harsh environments.

Smart Control System

EMS (Energy Management System): The system' s 'brain' analyzes real-time tariffs and loads, automatically charging at 0.27 RMB/kWh and discharging during peak hours at 1.2–1.4 RMB/kWh.

PCS: Delivers efficient AC/DC conversion with fast, stable charge-discharge switching to support seamless system operation.

BMS: Provides 24/7 monitoring of cell voltage, temperature, and current, supported by multi-level protections against overcharge, over-discharge, overcurrent, short-circuit, and over-temperature.

Four Layers of Safety

Cell-level safety: Utilizes thermally stable LiFePO4 chemistry to ensure inherent safety.

BMS protection: Performs real-time diagnostics with rapid fault isolation.

Module-level fire protection: Equips each battery module with independent fire-protection measures.

Cabinet-level fire suppression: Integrates an automatic suppression system for immediate hazard control.

Efficient Thermal Management

Three 3kW industrial AC units maintain the battery temperature at 25–30°C, ensuring stable long-term performance and extending cycle life.

 

Economic Benefits

Peak-Valley Arbitrage:

By performing one full charge–discharge cycle per day, the system captures an average price spread of about 0.9 RMB/kWh. 

Annual saving:

723 kWh × 0.9 RMB/kWh × 330 days ≈ 215000 RMB 

Environmental Impact:

Enhances clean-energy utilization and supports the park’s long-term green development goals.

 

Conclusion

This CI energy storage system is a high-value investment that elevates energy intelligence, reduces operating costs, and strengthens peak-hour resilience.After deployment, it provides real-time monitoring through EverExceed’s cloud-based Energy Management System (EMS). With dependable performance, intelligent scheduling, and comprehensive safety protection, it delivers rapid ROI and sustained long-term value. As we have always emphasized, providing customers with safer, smarter, simpler energy storage products.