High voltage battery storage system for dual use

Battery storage systems for data centers and telecommunication systems which are available nowadays are merely operated as emergency power systems. During stand-by modus these systems are without any commercial benefit. Furthermore lead-acid battery systems which are usually applied cause enormous additional maintenance costs. Due to the increasing share of volatile renewable energy sources, large energy storage systems are required to ensure the grid stability. This energy storage must be capable to provide short-term balancing power for the grid on demand. To meet the requirements stated above a distributed battery storage system based on lithium iron phosphate (LiFePO4) cells has been developed. This storage system has been designed being able to realize other possible uses in addition to the necessary emergency power supply. However, for all additional applications and use cases the emergency power supply is always prior-ranked. Additional uses are for example the provision of balancing power as a service to the power grid, the increase of internal consumption of self-generated renewable energy (electricity is generated by photovoltaic plants during the day can be consumed by night). Furthermore, the storage system can be used as a charging station for electric vehicles. This dual use creates a huge economic advantage compared to conventional emergency power supply systems.