The Varel-Niedersachsen Hybrid Battery System Demonstration Project is an 11,500kW energy storage project located in Varel, Niedersachsen, Lower Saxony, Germany.

The electro-chemical battery energy storage project uses hybrid as its storage technology. The project was announced in 2017 and was commissioned in 2018.

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The Varel-Niedersachsen Hybrid Battery System Demonstration Project was developed by EEW Holding, EWE-Verband and New Energy and Industrial Technology Development Organization.

The key applications of the project are primary control reserve, secondary control reserve, balancing and reactive power supply.

Contractors involved

EEW Holding, EWE-Verband, New Energy and Industrial Technology Development Organization, NGK Insulators and Showa Denko Materials have delivered the battery energy storage project.

Additional information

Total budget: Approximately 2.88 billion yen.
The project aims to demonstrate the effectiveness of the large-scale hybrid power storage system designed by taking advantage of the features of lithium-ion batteries (capacity: 7.5 MW/2.5 MWh) with a high-power charge/discharge output and durable, large capacity NAS batteries (capacity of 4 MW/20 MWh), in combination with Hitachi Power Solutions’ power grid information and battery control system that controls both batteries and enables the following functions by communicating information for the electricity trading.

About EEW Holding

EEW Holding GmbH, through its subsidiary, operates a total of 19 waste incineration plants, which produce electricity, district heat, and process steam. The company is based in Helmstedt, Germany.

About New Energy and Industrial Technology Development Organization

New Energy and Industrial Technology Development Organization (NEDO) is a public management organization that promotes research and development and develops new energy and energy conservation technologies. The organization undertakes projects in the fields of photovoltaic, wind power, biomass and waste, geothermal power, thermal utilization and fuel cell. Its project activities include new energy and energy conservation, clean coal technology, environment and resource conservation, electronics, information and telecommunications, materials and nanotechnology, robot technology, new manufacturing technology, and cross and peripheral fields. Its technology development fields include energy conservation, rechargeable batteries and energy systems, environment and resource conservation, clean coal technology, global warming mitigation, among others. The organization operates through its offices located in the US, France, Thailand, China and India. NEDO is headquartered in Kawasaki, Japan.


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.