Modular Multi-Megawatt Multi-Technology Medium Voltage – Battery Storage System


The M5BAT project uses five different battery technologies to independently test and evaluate their individual performance as well as to evaluate the hybrid performance. The aim of the project is to investigate the economic and technical viability of the various technologies in relation to their potential on the real electricity market. Based on a scientific analysis process during operation, statements about life cycle costs and technology potential are derived. These results are then used as building blocks for an economically optimized conception and design for future battery storage systems in the MW range.



Lucas Koltermann

Battery Grid Integration and Storage System Analysis


+49 241 80-49338



How to ensure a reliable and stable electricity grid in the future? With the expansion of renewable energies such as wind, solar and geothermal energy, imbalances between production and consumption arise due to their volatile nature. This has a negative effect on frequency stability in the power grid. As part of the M5BAT project, the Institute for Power Electronics and Electrical Drives (ISEA) is investigating how battery storage systems can be used to stabilize the grid and operated economically using an intelligent control system. A stationary 5.6 MW / 5.5 MWh battery storage system with multiple battery technologies and a connection to the electricity grid was built to research that topic.



1st July, 2013 to 30th June, 2018



Bundesministerium für Wirtschaft und Energie Logo Energiespeicher - Research initiative of the federal government


E.ON Research Center Uniper SMA Exide Batteries Institute of Power Systems and Power Economics