WBS Power Sells Germany’s Largest Co-Located BESS + Solar PV Project To Prime Capital, Forms New Joint Venture To Build A Hyperscale Data Center

WBS Power GmbH announced the sale of Project Jupiter, a major infrastructure development in Germany, to Prime Capital AG. The acquisition is being made on behalf of Prime Capital’s Prime Green Energy Infrastructure Fund II S.A., SICAV-RAIF (PGEIF II). Project Jupiter consists of a 500 MW / 2,000 MWh battery energy storage system and up to 150 MWp of solar photovoltaic capacity located on a former airfield. It is currently the largest planned co-located solar and battery storage project in Germany. As part of the agreement, WBS Power and Prime Capital will also create a joint venture to develop a hyperscale data center with a planned capacity of 500 MW in the same location. PwC and Capcora served as exclusive sell-side M&A advisors to WBS Power for this transaction.

The project site is situated on a former military airfield in Brandenburg, which WBS Power acquired in 2022. The total expected investment is around €500 million. Construction is planned to begin in late 2026 or early 2027. Both the battery storage system and the solar plant will share a single grid connection that feeds into the 380 kV high-voltage line operated by the transmission operator 50Hertz. In order to secure the earliest possible grid connection date, the parties agreed to fast-track the procurement of key long-lead components such as transformers. The acquisition will be executed through Jupiter JVCo S.à r.l., a Luxembourg-based entity established by Prime Capital for this purpose.

The transaction is subject to the project reaching ready-to-build status, and no further details have been disclosed. In addition to the renewable energy facilities, the parties intend to make use of the strong grid connection by developing a hyperscale data center with a capacity of up to 500 MW. The plan reflects the rising demand for data centers in Germany, particularly those located close to energy infrastructure, as these facilities require large and reliable power supplies and benefit from direct access to renewable energy.

WBS Power was formed through a strategic spin-off from PST Solartechnik by its founder. Although based on roots in Poland, the company is actively progressing several battery storage, solar PV, onshore wind, and hyperscale data center projects in both Germany and Poland. Maciej Marcjanik, Chief Executive Officer of WBS Power Group, stated that Project Jupiter represents the company’s commitment to innovative and large-scale solutions. He said that combining Germany’s largest co-located battery storage and solar project with a hyperscale data center creates a platform that supports both the energy transition and the growing digital infrastructure needs. According to him, this project marks an important milestone in delivering next-generation infrastructure that brings together renewable energy and digital capacity.

Dr. Mathias Bimberg, Head of Infrastructure at Prime Capital, commented that the acquisition strengthens Germany’s critical infrastructure by integrating renewable power generation and digital capacity on an unprecedented scale. He said Project Jupiter plays a central role in the fund’s strategy to invest in assets that support Europe’s energy transition. Alexander Enrique Kuhn, Managing Partner at Capcora, noted that supporting WBS Power together with PwC in structuring the M&A process was essential for a project of this magnitude. He added that aligning two like-minded investors was a key factor in bringing the project forward and that initiatives such as Project Jupiter make a real contribution to Germany’s energy transition.

Andrzej Rusniak, Director at PwC Poland, stated that the transaction demonstrates how strategic partnerships can speed up the energy transition while also creating long-term value. He said that the cooperation with Capcora on this deal sets a strong example for future infrastructure projects in Europe. Legal advisors involved in the deal included DLA Piper for Prime Capital and CMS for WBS Power. Financial advisory was provided by PwC alongside Capcora, and Fichtner acted as technical advisor.