Rolls-Royce, CATL Launch TENER Product Line in Europe

Published on: 

Rolls-Royce Power Systems will launch CATL’s TENER products as part of its mtu EnergyPack QG solution for large-scale battery energy storage systems (BESS).

CATL and Rolls-Royce Power Systems signed a strategic cooperation agreement to introduce CATL’s new TENER product line for grid-scale BESS projects in the European Union and the United Kingdom. The two companies have currently delivered several projects in the EU equipped with CATL’s EnerOne product line with additional customers under contract.

The TENER line features increased safety, extended service life, and optimized efficiency with Rolls-Royce integrating the products as part of its mtu EnergyPack QG solution for large-scale energy storage—primarily utilized by grid operators. The partnership also includes the potential development of additional smart products, leveraging Rolls-Royce’s intelligent automation solution, mtu EnergetIQ, and mtu Go!, as well as CATL’s intelligent diagnostic platform and battery management system.

Grid-scale energy storage systems allow the integration of renewable energy sources—subject to intermittent or variable output depending on the weather—into the grid while increasing stability and reliability. The integrated solution allows customers to use grid and trading services while accelerating the energy transition with sustainable energy infrastructure.


In 2023, Rolls-Royce and CATL entered a long-term supply agreement to collaborate on upwards of 10 GWh of energy storage capacity. The companies have been working to integrate TENER products into EPC-turnkey projects with all-inclusive service offerings. TENER products, depending on project specifications and actual usage, can achieve zero degradation in the initial five years of operation.

Last month, Rolls-Royce agreed to 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.

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 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.

In March 2024, Augstsprieguma tikls (AST), a Latvian transmission system operator, placed an order with Rolls-Royce for an mtu large-scale 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.

Rolls-Royce will supply an mtu EnergyPack QG large-scale battery storage system with 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.