Bach Long Vi Microgrid: Three Years of Reliable Operation with Sungrow BESS
Total Capacity:
1MW Microgrid Project
Core Equipment:
SG110CX inverters
Operational Since:
2022
Background
Since 2022, the Bach Long Vi Island microgrid project has integrated solar power, wind power, battery energy storage (BESS), and diesel generators to ensure energy security for this strategic offshore island. The hybrid system plays a vital role in delivering stable and sustainable electricity to the island.
Challenges
Installing the system on a remote military island presented significant logistical challenges, particularly in transporting equipment and materials. Ensuring a stable power supply around the clock was critical for the island’s operations. Therefore, the Solar + BESS solution had to deliver highly reliable performance while withstanding the harsh coastal environment and strong marine corrosion.
Solution
At the core of the project lies Sungrow’s BESS equipped with advanced Grid-forming technology (Virtual Synchronous Generator – VSG), enabling stable off-grid operation. • Grid-forming capability: The BESS acts as the primary power source, establishing voltage and frequency for the island’s independent power network. • Multi-source coordination: The system seamlessly integrates a 1 MW wind turbine, a solar PV system powered by Sungrow SG110CX inverters, and backup diesel generators. • Millisecond-level response: The technology stabilizes the grid instantly during weather fluctuations, ensuring uninterrupted electricity supply. • Built for harsh marine environments: The system is designed to withstand the corrosive conditions typical of coastal locations.
Impact
Since its commissioning in 2022, the Bach Long Vi microgrid has demonstrated outstanding performance, delivering abundant and stable clean electricity 24/7 to both military personnel and residents on the island. After more than three years of operation, Sungrow equipment continues to maintain optimal performance thanks to its C5 anti-corrosion protection standard, ensuring durability in harsh marine environments. The project not only saves thousands of liters of diesel annually but also reinforces Bach Long Vi’s role as a “green fortress” with independent and sustainable energy supply.
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