Project Introduction
- Project Name: Implementation of a 261 kWh Battery Energy Storage System (BESS) Integrated with a 400 kWp Solar Power System at an EV Charging Station
- Location: Phu Tho Province, Vietnam
- Implementation Time: October 2025
- Implementing Unit: GG Industries
2. Project Objectives
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Stabilize EV charging power during peak hours.
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Improve energy utilization efficiency from the rooftop solar power system.
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Reduce electricity costs by storing and consuming energy during off-peak hours.
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Contribute to grid load reduction and enhance system reliability in the area.
3. Key Technical Specifications
| Item | Details |
|---|---|
| System Capacity | 261 kWh |
| Battery Type | Li-ion (LFP) |
| PCS | 125 kW |
| Features | Bidirectional charge/discharge, smart management via EMS |
| Monitoring System | Remote monitoring through IoT platform |
| Safety Protection | Integrated BMS, fire & explosion protection, circuit & overvoltage protection |
4. Challenges & Solutions
Challenges:
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Large fluctuations in EV charging loads create stress on the local power grid.
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Maximizing the utilization of rooftop solar energy.
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Ensuring absolute safety when integrating batteries with DC fast-charging systems.
Solutions:
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Optimize distributed energy storage design integrated with existing solar systems.
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Integrate an Energy Management System (EMS) for intelligent power coordination.
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Install a remote monitoring and early warning system for battery and system health.
5. Achieved Results
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Reduced station operating costs by up to 25% through off-peak energy usage.
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Maintained 100% stable charging power during peak hours without interruption.
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Reduced grid load by approximately 250 kW during peak hours.
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Enhanced the green, clean, and modern image of Phu Tho City.
