Fluence unveils Smartstack: A game-changing, high-density energy storage platform
As global demand for efficient, scalable, and high-performance energy storage grows, Fluence Energy, Inc. is setting a new benchmark with Smartstack™, its latest AC-based energy storage platform.
Designed for grid-scale applications, Smartstack boasts a 30% higher energy density than existing market solutions, a future-ready modular design, and AI-powered intelligence—all of which drive greater efficiency, scalability, and cost savings. Fluence will begin customer deliveries in Q4 2025, ushering in a new era of intelligent energy storage.

Smartstack’s Breakthrough Modular Architecture
Smartstack’s patent-pending design solves key industry challenges by rethinking how energy storage is structured and deployed. Unlike traditional battery systems, Smartstack splits storage units into transportable, modular components, reducing shipping constraints and installation complexity while maximizing energy density on-site.
With a stackable design, the system achieves up to 7.5 MWh energy density per unit, enabling utilities and energy developers to deploy more MWh within existing project footprints—optimizing land use and lowering costs.
Smartstack is available in multiple storage durations:
✅ 2-hour & 4-hour configurations for short-term grid stabilization
✅ 6-hour & 8-hour configurations for extended energy resilience
How Smartstack Works: The Key Components
1️⃣ Smart Skid: The foundation of the system, integrating:
✔ Advanced cooling to regulate battery performance
✔ Power control system hardware for seamless energy management
✔ Comprehensive monitoring for real-time diagnostics
✔ Easy maintenance access for streamlined servicing
2️⃣ Battery Pods: Modular storage units that:
✔ Support cells from multiple vendors for better pricing & performance
✔ Are easily swappable for faster maintenance & upgrades
✔ Enable higher density storage, making more sites viable
This flexible architecture makes Smartstack future-proof, allowing seamless battery cell replacements and tech upgrades without overhauling entire systems.
Smarter Energy Storage: AI-Powered Optimization
Unlike conventional storage solutions, Smartstack is driven by intelligence, not just hardware. Equipped with locally deployed AI, the platform autonomously:
✔ Optimizes embedded controls for superior performance
✔ Provides real-time visibility across storage portfolios
✔ Enhances system availability—guaranteed up to 99% uptime
This AI-driven approach maximizes revenue potential while ensuring peak performance during critical demand periods.
Supply Chain & Scalability: A More Resilient Future
Smartstack’s modular design unlocks a more agile and cost-effective supply chain strategy. By allowing regional component sourcing and manufacturing, Fluence enhances:
✔ Availability & affordability by reducing supply chain bottlenecks
✔ Compliance with regional energy regulations
✔ Resilience against geopolitical disruptions
This localized production model makes grid-scale storage deployment faster, more efficient, and more cost-effective.
Fluence’s Unmatched Safety & Reliability Standards
Safety remains Fluence’s top priority, and Smartstack is no exception. Built with the same industry-leading safety features as its trusted Gridstack products, Smartstack incorporates:
✔ Large-scale fire testing certification at higher density
✔ Multi-layer protection systems for thermal event prevention
✔ Advanced monitoring & containment mechanisms
By setting the highest standards in energy storage safety, Smartstack minimizes risks, reducing potential downtime and damage.
Fluence’s Legacy: 37.7 GWh of Global Storage Deployed
With over 37.7 GWh of deployed and contracted storage projects worldwide, Fluence continues to lead energy storage innovation. The introduction of Smartstack further solidifies its commitment to efficiency, intelligence, and sustainability.
Want to future-proof your energy storage projects? Learn more about Smartstack on Fluence’s official website and stay ahead of the energy revolution.