Fluence Unveils 10 MWh Smartstack System with 680 MWh/Acre Density and 40% Cost Savings
FLNC•Fluence introduced Smartstack 10 MWh, boosting its modular energy storage platform from 7.5 MWh and achieving a site-level energy density of roughly 680 MWh per acre. The system completes large-scale fire testing, features compartmentalized safety design and cuts balance-of-plant costs up to 40%.
1. Product Overview
Fluence launched the Smartstack 10 MWh system as the latest expansion of its modular energy storage platform, which previously offered a 7.5 MWh configuration. The new system maintains the same electrical architecture and deployment model, enabling customers to scale capacity without redesigning project layouts.
2. Enhanced Energy Density
Through an evolved pod design, Smartstack 10 MWh achieves a core site-level density of approximately 680 MWh per acre (168 kWh/m²), positioning it among the most space-efficient grid-scale storage solutions. This density increase allows developers to maximize capacity on limited land, addressing a primary barrier to project viability for utilities and data center operators.
3. Safety and Testing
Safety remains foundational, with the Smartstack 10 MWh system completing Large-Scale Fire Testing and employing a compartmentalized design to limit thermal exposure and reinforce containment. These features bolster risk mitigation and enhance confidence for mission-critical deployments.
4. Economic and Market Impact
Smartstack 10 MWh reduces balance-of-plant costs by up to 40% versus standard DC block designs and integrates with Fluence OS for advanced controls, system optimization and portfolio visibility. Commercially available worldwide with 2-, 4-, 6- and 8-hour durations, the platform supports Fluence’s 99.3% fleet availability and positions the company to capture growing demand for high-density storage.
