Approval Granted for 50 MW Battery Storage Facility at Wilhelmshaven Site

Uniper has received full approval for the construction and operation of a 50-megawatt battery storage facility at the former Wilhelmshaven power plant site. With this project, the company is supporting the transformation of the site and contributing to the energy transition in the region.

With the battery storage system, Uniper is helping to ensure a flexible and reliable electricity supply. Energy storage systems are crucial for the integration of renewable energies, as they balance fluctuations and improve grid stability. “The battery storage system was originally planned for the Heyden site in Petershagen/Lahde. However, the project could not be realized there due to grid connection challenges. Since a suitable grid connection was already available at the Wilhelmshaven site, Uniper decided to relocate the planned facility to Wilhelmshaven. The first components are already on site, and the complete relocation is expected to be finished by mid-2026,” reports overall project manager Harald Poppinga. “The approval is an important step for the future of the Wilhelmshaven site. With the battery storage system, we are creating a bridge between security of supply and the energy transition,” says Dr. Nadine Menning, Head of Energy Assets Northwest at Uniper. The Wilhelmshaven power plant was shut down in December 2021. Since then, Uniper has been driving forward the development of new projects at the site. Construction of a photovoltaic plant on the former ash disposal area recently began. A solar power plant with a planned annual output of 17,500 megawatt hours is being built on the site between the Alte Voslapper Deich and the southern Voslapper Groden. Commissioning is scheduled for July 2026.

About Uniper

Based in Düsseldorf, Uniper is a European energy company with a global reach and operations in more than 40 countries. With around 7,500 employees, the company plays a central role in ensuring a secure energy supply in Europe—particularly in its core markets of Germany, the United Kingdom, Sweden, and the Netherlands. With 14 gigawatts of flexible generation capacity, Uniper forms the backbone of reliable power generation. As a leading gas trader and one of Northwestern Europe’s most important LNG importers, Uniper strengthens security of supply with a broad sourcing portfolio. Through investments in renewable energies, hydrogen, and other forms of low-carbon energy, Uniper is also driving the transformation of the energy system. In its home market of Germany, Uniper supplies around 1,000 municipalities and industrial companies with energy and services. In addition, Uniper is Germany’s largest operator of gas storage facilities and hydropower plants.

ENERGY HUB Port of Wilhelmshaven

With more than 40 national and international members, the ENERGY HUB Wilhelmshaven represents outstanding energy expertise and focuses on renewable energies, hydrogen, and carbon management. The site is set to become a central hub for security of supply, supported by politics, industry, and science. Uniper is a member of the ENERGY HUB. As a result, Uniper’s battery storage facility in Wilhelmshaven is part of the transformation story that the alliance aims to write for the city on the North Sea coast. This press release may contain certain forward-looking statements based on current assumptions and forecasts of the management of Uniper SE and other information currently available to them. Various known and unknown risks and uncertainties, as well as other factors, may cause actual results, financial position, development, or performance of the company to differ materially from the assessments expressed here. Uniper SE does not intend and assumes no obligation to update or adapt such forward-looking statements to future events or developments.

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