The Mercedes-Benz Energy Storage System (MBESS) can be customised as an in-house solution or in a containerised format to meet various site requirements.
The Mercedes-Benz Energy Storage System (MBESS) combines safety, scalability, and flexibility for use in industry and commerce. It consists of standardized and tested components manufactured to the highest industry standards and realized with proven technologies. The highly scalable modular approach – from the battery to the power electronics and grid integration – allows the system to be flexibly adapted to a wide range of performance and capacity requirements. This means that the MBESS can be optimally tailored to the specific needs of the respective area of application.
Components of MBESS
The Mercedes-Benz Energy Storage Systems consist of three key components: the DC/AC system (battery), the cooling system, and the power electronics.
The MBESS utilizes high-quality battery modules from the automotive sector for the efficient storage of electrical energy. The fully integrated system comes in 13 feet containers and can be scaled flexibly. It integrates the battery unit (DC) and the power electronics (AC). It can be adjusted from 600 kW or 1,200 kW or AC power and comes with approximately 1.6 MWh of capacity to allow flexible solutions for various areas of application.
Footprint
- 13-foot high-cube ISO container + application-specific battery cooling.
- Optional: In-house installations based on customer request.
Capacity
- 1.56 MWh nominal in the 13-foot container
- Scalable from 1.56 MWh to 6.24 MWh (+100 MWh possible with multiple systems)
- C-rate (Charge / Discharge) up to 0.94
The power electronics convert direct current (DC) into alternating current (AC) and enable connection to the power grid. Proven industrial inverters and an advanced software validation system are used for this purpose.
General
- Latest generation of high-quality industrial inverters with IC7 technology (Danfoss)
- SiC technology for very high efficiency (RTE)
- Advanced software development
Footprint
- Fully integrated into the DC/AC system container
Topology
- Up to four separately controllable AC/DC strings with a maximum power of 600 / 1200 kW each
- Ready for a 1200V DC input voltage
- Includes DC and AC contactors, fuses, and connection terminals
- Includes a combined PLC control system and interfaces
- Includes a local data logger and optional
A liquid cooling system ensures an even temperature distribution in the DC system and thus contributes to extending the battery service life. The cooling can also be adapted to specific load profiles to further optimize efficiency.
Cooling
- Liquid cooling to extend battery life and reduce degradation
- Optional: Adaptation of cooling to customer-specific load profiles
- Two separate cooling circuits for batteries and PCS in one housing
- Energy-saving free-cooling system – standard feature
- Natural refrigerant: R290 (eco-friendly propane)
Benefits of the Mercedes-Benz Energy Storage System (MBESS)
The MBESS has been assessed for full compliance with the latest safety standards. Three key safety measures are implemented:
A specially developed, functionally safe battery management system permanently ensures the reliability of the batteries, protecting them from ageing and dangerous conditions.
An integrated fire detection system with an aerosol suppression system provides additional safety in the unlikely event of a battery defect.
Thermal insulation of individual modules within a compartmentalised design ensures that the system remains reliable and safe even in the event of disruptions.
Thanks to its modular design, the Mercedes-Benz Energy Storage System (MBESS) can be optimally adapted to various requirements, with storage capacities ranging from 1.56.MWh to 6.24 MWh and up to over 100 MWh with multiple systems.
Whether as a container solution, in-house system or individually optimized: The storage system can be designed flexibly and makes an important contribution to the energy transition by supporting grid stability services such as black start and grid forming
The Mercedes-Benz Energy Storage System (MBESS) enables particularly low total cost of ownership over its entire lifecycle. Planned maintenance intervals, live software updates, and uniform, low material ageing ensure high availability and economic efficiency. A predictive monitoring system extends the lifespan of the storage system while simultaneously reducing operating costs.
Commitment at all levels: The Mercedes-Benz Energy Storage System (MBESS) combines performance with sustainability. Low-emission technologies such as propane-based cooling and SF6-free insulation gas actively contribute to environmental protection. The use of repurposed batteries enables the reuse of valuable raw materials, enhancing resource efficiency.
MBESS is built on extensive expertise that has evolved since the pioneering days of stationary battery storage technology. With years of experience and continuous development, cutting-edge solutions are created to meet both today’s demands and tomorrow’s challenges. Close collaboration with scientific institutes drives the development of innovative technologies.
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