Fluence Energy's Smartstack energy storage platform is now commercially available for grid scale applications. The AC power system is expected to start delivery in the fourth quarter of 2025.

Smartstack's patent pending design strategically breaks down battery storage systems into units that are easy to transport in terms of weight and size, thereby reducing transportation restrictions and installation complexity. On site, the system can maximize the density of the project site, providing up to 7.5 MWh of energy density when integrated with a 300 Ah power generation battery. This density is about 30% higher than the currently available communication systems. This platform can generate more megawatt hours of electricity within the existing project footprint, thereby reducing costs and making previously limited sites available for developing storage projects.

Smartstack has reimagined energy storage design through a flexible modular architecture that can be tailored to meet different market demands. Two hour and four hour energy storage times, as well as longer six hour and eight hour energy storage times, are now available for purchase. The proprietary appearance of this product includes two key components:

Intelligent slide rail - the basic platform that accommodates the core of the Smartstack system. The intelligent slide rail integrates advanced cooling equipment, power control system hardware, all cables, and comprehensive monitoring functions, and has convenient maintenance access.
Battery compartment - The Smartstack battery compartment is located at the top of the Smart Skid and contains the system's battery units. The battery compartment supports battery units from multiple suppliers, ensuring the most competitive prices and optimal performance. The battery compartment is also designed to be interchangeable with replacement units during maintenance or technical upgrades to maximize system availability.
Fluence President and CEO Julian Nebredo said, "Fluence's innovative record and execution speed drive us to lead the energy storage industry forward. With our industry-leading expertise in developing and deploying innovative solutions globally, Smartstack has reimagined the way systems are designed, built, and maintained. By addressing key challenges such as supply chain transportation restrictions, product density, maintainability, and modularity, we provide a platform that is more scalable and easier to operate than competitive solutions. This means that our clients can achieve excellent project economic benefits

Smartstack's innovative approach ensures up to 99% availability and leverages Fluence's long-term service agreement to maximize revenue. Its innovative approach places intelligence, not hardware, at the core of innovation. This platform enhances system intelligence through locally deployed AI, autonomously optimizes embedded control, and provides comprehensive visibility across storage combinations.