Fluence & ACE open a 35GWh automated battery storage factory in Vietnam. The plant will produce Gridstack Pro & Smartstack systems to meet surging global demand for grid-scale energy storage.
New Bac Giang Facility to Mass-Produce Gridstack Pro & Smartstack Systems for Global Market
Bac Giang Province, Vietnam – In a major step to address the world’s soaring demand for grid-scale energy storage Fluence a global leader in energy storage technology and ACE Engineering have inaugurated a new fully automated battery manufacturing facility in Vietnam’s Bac Giang Province.
The factory, one of the largest of its kind dedicated to energy storage systems (ESS), boasts a massive annual production capacity of 35 gigawatt-hours (GWh). This single facility could produce enough battery storage annually to deploy approximately 8.75 GW of 4-hour duration systems significantly bolstering global supply chains for renewable energy integration.
A Hub for Advanced, Automated Manufacturing
The facility is designed with state-of-the-art automation to enhance productivity ensure stringent quality control and maintain competitive pricing. It will produce Fluence’s latest-generation energy storage solutions:
- Gridstack Pro: The flagship front-of-the-meter system for utilities and independent power producers, featuring enhanced safety certifications (UL9540/A) and designed for capacity-constrained transmission areas.
- Smartstack: A compact, integrated solution for commercial and industrial (C&I) applications with advanced energy management capabilities.
Julian Nebreda, President & CEO of Fluence, emphasized the strategic importance of the plant: “By combining advanced automation with rigorous quality standards, we believe we are optimally situated to meet stringent customer requirements and deliver competitively at the speed and scale the market demands.”
Southeast Asia Emerges as a Battery Manufacturing Powerhouse
Fluence’s move into Vietnam is part of a broader trend of global energy storage giants expanding their manufacturing footprint into Southeast Asia. The region offers strategic advantages, including growing supply chain ecosystems, favorable investment conditions, and proximity to key raw materials.
This shift is highlighted by other major projects, such as:
- CATL’s $6 billion Indonesia Battery Integration Project, spanning the full battery value chain.
- REPT Battero’s plans for an 8GWh battery cell gigafactory in Indonesia.
These investments are partly driven by ambitious national clean energy goals. Indonesia, for instance, recently launched a program to deploy 100 GW of solar PV and 320 GWh of battery storage in the coming years.
Navigating a Competitive Global Market
The opening of the Vietnam facility comes at a pivotal time for Fluence. Despite reporting a 24.7% year-on-year increase in Q3 FY2025 revenue (US$602.5 million), the company acknowledged it would hit the lower end of its annual revenue guidance due to delays in ramping up U.S. production.
Furthermore, Fluence recently dropped out of the top five in Wood Mackenzie’s 2024 global BESS integrator rankings, a position it held in previous years, underscoring the intensely competitive nature of the market.
The new Vietnam plant is a strategic counterbalance, diversifying its manufacturing base beyond its U.S. facilities (in Utah, Texas, and Arizona) and positioning it to efficiently serve the burgeoning Asia-Pacific market.
The Bottom Line: Scaling Up to Meet the Energy Transition
The inauguration of this 35GWh facility is more than a corporate expansion; it is a critical enabler for the global energy transition. By massively scaling the production of standardized, safe, and reliable battery storage systems, Fluence and ACE are helping to build the infrastructure needed to support a renewable-powered grid, ensuring stability and unlocking greater volumes of solar and wind energy worldwide.
