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.
Redundant controls, mission critical security, and NOC integration
99%+ system uptime for high asset availability
Inertia and grid forming applications provide rapid response services
Cost effective and fast installation compared to alternative technologies
Customer Case Study
A powerful asset for Lithuania’s European grid interconnection and renewables transition
Energy cells (an EPSO-G company) is deploying a 200 MW/200 MWh portfolio of Fluence energy storage systems to support the country’s transmission system as it moves towards synchronization with the continental European grid, as well as the integration of fast-growing renewable energy sources.
Changing generation resources and renewable intermittency causes transmission line congestion, which results in asset curtailment and re-dispatching.
Energy storage can be deployed quickly on the grid to increase transmission line capacity through energy shifting or n-1 contingency reserves.
A growing share of inverter-fed resources and changing load profiles create new system stability issues for grid operators.
Energy storage with advanced grid forming controls supports grid stability and power system operation with complex applications, such as inertia, black start, oscillation damping control, and more.
One of the world’s largest storage-as-transmission projects announced by Fluence and TransnetBW
The 250 MW Netzbooster (“Grid Booster”) project is being deployed to increase network utilisation across the German transmission system by using battery-based energy storage.
Ultrastack delivers advanced controls applications
Storage provides rapid dynamic active power injection within an extremely short timeframe based on Rate of Change of Frequency (RoCoF) measured at the point of interconnection.
Grid Forming Inertia
Storage emulates the dynamic characteristics of synchronous generators with instantaneous injection or absorption of active and reactive power.
Power Oscillation Damping Control
Storage provides damping of low frequency oscillations inherent in interconnected power systems through modulation of active and reactive power.
Storage use case verification
Functional design reviews
System sizing & optimization
Multiple layers of redundancy
Fluence OS is layered on top of all subcomponents to ensure system safety and functionality while patented control algorithms monitor and provide control over projects.
Comprehensive real-time monitoring
Fluence OS provides up-to-the-second visibility of unit performance, and continuously monitors, detects, isolates and alerts operators to potential anomalies.
Hardware-enabled safety measures
Subsystems protect themselves in event of a fault or failure in another subsystem, with all components having undergone rigorous qualifications and certifications.