New system builds on Smartstack’s modular architecture, delivering industry-leading site-level density
ARLINGTON, Va., June 23, 2026 (GLOBE NEWSWIRE) -- Fluence Energy, Inc. ("Fluence") (NASDAQ: FLNC), a global market leader delivering intelligent energy storage systems, services, and asset optimization software, today introduced Smartstack™ 10 MWh, the latest expansion of its Smartstack platform. The new 10 MWh system joins the existing 7.5 MWh, expanding the platform's capacity options to meet evolving, mission-critical project needs.
As the latest evolution of Fluence's scalable, standardized platform, this new system delivers expanded capacity and industry-leading site-level density while maintaining the electrical architecture, footprint, and deployment model customers rely on across the Smartstack platform. Through an evolved pod design, the system increases capacity without expanding its physical footprint, achieving a core site-level energy density of ~680 MWh/acre (168 kWh/m²), positioning the system among the most density-competitive grid-scale storage solutions available in the market.
Safety remains foundational to the Smartstack architecture. Smartstack 10 MWh has successfully completed Large-Scale Fire Testing (LSFT), and its compartmentalized design limits thermal exposure, reinforcing containment and risk mitigation across the platform.
"Smartstack was built as a platform, and the 10 MWh system shows why that matters," said Peter Williams, SVP and Chief Product and Supply Chain Officer, Fluence. "As battery technology, supply chains, and local content requirements continue to evolve, customers need storage systems that can adapt without redesigning projects from the ground up. With Smartstack, Fluence delivers a scalable architecture—more capacity in less space, with the performance, safety, and service model they expect."
The release marks another milestone for Smartstack as a future-ready, configurable platform. In a market where cell chemistries and local content regulations shift rapidly, standardizing balance-of-plant infrastructure allows customers to adopt newer, higher-capacity components without resetting development cycles or introducing execution risk—a critical advantage for independent power producers, utilities, and data center developers where maximizing capacity on limited land is a primary barrier to project viability. Smartstack 10 MWh helps customers maximize site ROI, improving land use and reducing balance-of-plant costs up to 40% versus standard DC blocks.
To support long-term economic performance, Smartstack and Fluence OS are engineered as a unified hardware-software platform, enabling advanced controls, system-level optimization, and portfolio visibility. Fluence's 99.3% availability across reviewed fleets of 50 MW and above, per an independent review, provides the contractual confidence mission-critical deployments require.
Smartstack is commercially available for grid-scale applications worldwide, offering 2-, 4-, 6-, and 8-hour storage durations.
About Fluence
Fluence Energy, Inc. (Nasdaq: FLNC) is a global market leader delivering intelligent energy storage and optimization software for renewables and storage. The Company's solutions and operational services are helping to create a more resilient grid, from powering the next generation of AI-driven data centers to unlocking the full potential of renewable portfolios. With gigawatts of projects successfully contracted, deployed, and under management across nearly 50 markets, the Company is transforming the way we power our world for a more sustainable future.