The Siemens-Wunsiedel Battery Energy Storage System is an 8,400kW energy storage project located in Wunsiedel, Bavaria, Germany.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2016.


The Siemens-Wunsiedel Battery Energy Storage System is being developed by Siemens. The project is owned by SWW Wunsiedel (100%).

The key applications of the project are reduce peak electricity cost, frequency regulation and grid support services.

Contractors involved

SWW Wunsiedel is the owner. Siemens is the developer. Siemens is the technology provider for the project.

Siemens is the system integrator.

Additional information

The large storage system from Siemens consists of three containers with lithium-ion cells, one container with the inverters, a concrete station with the transformers and the control system. The power supplied by the storage system will provide the higher-level transmission grid with short-term support.

About Siemens

Siemens AG (Siemens) is a technology company. Its operations span electrification, automation and digitalization fields. The company designs, develop and manufactures products, and installs complex systems and projects. It also provides a wide range of customized solutions for individual requirements. Siemens focuses on power generation and distribution, and intelligent infrastructure for buildings and distributed energy systems. It provides smart mobility solutions for rail and road transport, medical technology, and digital healthcare services. Siemens has research and development facilities, production plants, warehouses, and sales offices across the world. It serves customers in various industries such as energy, healthcare, infrastructure, process and manufacturing, and others. Siemens is headquartered in Munich, Bavaria, Germany.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.