Prime Capital has strengthened its energy storage footprint in Germany with the acquisition of a 135 MW battery energy storage system (BESS) in the state of Saxony-Anhalt, according to information released by the company.

The asset, known as Project Monet, was acquired from Zelos Energy Developments on behalf of the Prime Green Energy Infrastructure Fund II (PGEIF II). The project consists of a utility-scale, four-hour BESS and is located in the control area of transmission system operator 50Hertz, in northeast Germany.

According to Prime Capital, Project Monet has secured all key permits and is expected to reach ready-to-build (RTB) status imminently. Construction is scheduled to begin in early 2026. The company noted that the project has been developed in compliance with environmental regulations and in coordination with the local community.

The acquisition adds to Prime Capital’s growing battery storage portfolio in Germany, a market that the company describes as one of the most attractive in Europe due to its liquidity and increasing need for flexible capacity. Large-scale storage is seen as a key enabler for grid stability and for integrating higher shares of renewable generation into the power system.

“This investment in Project Monet underscores our strong conviction in the critical role large-scale storage plays in the country’s energy transition,” said Jens Walzner, Managing Director at Prime Capital, in a statement released by the firm. He added that the project will contribute to improving grid resilience and flexibility.

From the seller’s side, Zelos Energy Developments highlighted the transaction as a milestone in its contribution to Germany’s energy transition. According to the company, the sale of Project Monet reflects the growing maturity of the German battery storage market and continued investor interest in large-scale BESS projects.

Prime Capital also confirmed that the transaction was supported by CleanCap, which acted as originator and investment advisor and will continue to assist post-closing with project management, procurement, tolling and debt financing. Legal and technical advisory services were provided by DLA Piper, Brock Müller Ziegenbein und Terpitz Rechtsanwaltskanzlei, and Afry, respectively.

Germany has emerged as one of Europe’s most active markets for grid-scale battery storage, driven by renewable expansion, grid congestion and rising demand for system flexibility.