Rolls-Royce Provides Battery Storage to Stabilize Renewable Power in Germany

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The mtu battery energy storage system has an output of 12 MW and a storage capacity of 24 MWh, supporting Encavis AG’s grid stabilization and energy-trading efforts.

Rolls-Royce will deliver its mtu battery storage EnergyPack system for German-based electricity producer Encavis AG to support trading electricity generated by wind and solar by balancing fluctuations in generation and increasing security of supply. Rolls-Royce will supply and install EnergyPack— with 12 MW of output and a storage capacity of 24 MWh—on a turnkey basis for initial operation in Q1 2025.

“With the large-scale battery storage system, we - together with Encavis AG and Stadtwerke Hettstedt - are making a contribution to the energy transition as well as to grid stabilization,” said Andreas Görtz, President Sustainable Power Solutions at Rolls-Royce Power Systems. “This is because the system ensures that electrical energy from renewable sources is also stored and helps to support the grid when needed. Our battery solutions, which are part of our strategic business areas, make a sustainable and reliable contribution to energy security worldwide.”

The ordered mtu EnergyPack storage system includes 72 battery cabinets and the EnergetIQ control platform to provide optimum performance and flexibility. In addition to Rolls-Royce supporting the system’s project development for Encavis AG, the company is also responsible for construction, complete installation, and the provision of grid connection components. The companies signed a 10-year value care agreement which ensures the respective value capacity and plant efficiency over the specified term.


“The battery storage system, which is now about to be installed, completes our idea of a reliable and innovative energy supply,” said Mario Arnold, Managing Director of Stadtwerke Hettstedt GmbH. “We are delighted that Encavis AG and Rolls-Royce want to make their contribution to a future-oriented energy infrastructure with us as their partner. In particular, this gives us the opportunity to raise the security of supply of an entire region to a new level.”

The storage system will be installed at Encavis Ag’s plant in Saxony-Anhalt, Germany, for a project developed in collaboration with Stadtwerke Hettstedt. It will be charged during times of low electricity prices and provide energy at times of higher prices through participation in the day-ahead and intra-day market.

Augstsprieguma tikls (AST), a Latvian transmission system operator, placed an order with Rolls-Royce for an mtu EnergyPack QG battery storage system to secure the Latvian grid. Latvia will also use the battery storage system, along with other Baltic states, to synchronize its energy supply system with the continental European power grid.

“We are proud to be able to make a significant contribution to this important and safety-critical project in Latvia,” said Dr. Jörg Stratmann, CEO of Rolls-Royce Power Systems. “Our battery solutions, which belong to our strategic business fields, make a sustainable and reliable contribution to energy security worldwide. The facility for Latvia will be our largest battery storage system to date.”

This system has an output of 80 MW and a storage capacity of 160 MWh. AST’s order also includes general contractor services as well as installation and commissioning. The battery system will be used in 2025 at two locations: a 20 MW/40 MWh battery storage at AST’s substation in Tume and a 60 MW/120 MWh battery storage at the AST substation in Rezekne.