The platform offers solutions of two, four, six, and eight-hour duration, tailored to clients’ needs.
US-based energy storage and asset optimisation firm Fluence Energy has introduced its high-density, alternate current (AC)-based energy storage platform Smartstack for grid-scale applications worldwide. The platform offers solutions of two, four, six, and eight-hour duration, tailored to clients’ needs.
Smartstack combines superior performance, predictive servicing, top safety standards, and a modular design to meet critical industry demands, the company claimed in a statement.
Customer deliveries are set to begin in late 2025. Smartstack’s patent-pending design reduces shipping constraints and installation complexity by splitting battery storage into transportable units. Onsite, it maximises energy density to 7.5 MWh, around 30 per cent higher than existing systems. This innovation enables more MWh generation within existing project footprints, reducing costs and expanding viable project sites.
Smartstack reimagines energy storage design through a flexible modular architecture that can be tailored for varying market needs. The product’s proprietary form factor includes two key components: a Smart Skid platform and battery pods.
The Smart Skid is a base platform housing the system’s brain. It integrates advanced cooling equipment, power control system hardware, all cabling, and comprehensive monitoring capabilities with convenient maintenance access. The system’s battery pods containing battery cells sit atop the Smart Skid. Pods support cells from multiple vendors, assuring the most competitive pricing and top performance. They are also designed to be swapped with replacement units during maintenance or technology upgrades to maximise system availability.
“By addressing critical challenges like supply chain shipping constraints, product density, serviceability, and modularity, we are delivering a platform that is more scalable and easier to operate than competing solutions. This translates to superior project economics for our customers,” said Fluence President & CEO Julian Nebreda.
AI-enabled intelligence
Guaranteed to deliver up to 99 per cent availability with Fluence’s best-in-class long-term service agreement to help maximise revenue generation, Smartstack’s innovative approach makes intelligence, not hardware, the heart of innovation. The platform elevates system intelligence with locally deployed AI, autonomously optimising embedded controls while providing full visibility across storage portfolios.
The modular design of Smartstack enables a more agile and cost-effective supply chain localisation strategy, allowing components to be sourced or manufactured regionally to optimise availability, cost, and compliance while enhancing resilience against geopolitical and logistical disruptions.
“Smartstack maintains Fluence’s uncompromising commitment to safety and cybersecurity, incorporating multi-layer protection systems. These advanced safety features work together to prevent, detect, and contain thermal events, minimising potential damage and downtime,” said Mark Berger, Vice President of Product and Programme Management.
To date, Fluence has deployed and contracted more than 34.2 GWh of storage projects globally, including the world’s first grid-connected system.