Power grid operators around the world face a once-in-an-industry challenge as the rapid growth of distributed resources and renewable generation increase intermittency and congestion and weaken system stability. Ultrastack™ unlocks the power of battery energy storage for transmission networks—delivering network utilization and system stabilization services that up until now could only be provided by traditional power resources.
What does Ultrastack bring to your transmission infrastructure?
The most advanced battery storage technology available.


Battery energy storage is a proven resource for grid operators

Fluence is your trusted partner in the energy transition
Fluence delivers a full solution to our customers, combining advanced storage technology with technical expertise, market knowledge, and high voltage implementation experience.
Safety embedded across system design.
Fluence designs complete energy storage products with safety integrated into every layer of system controls and hardware.