Large-scale battery storage initiatives deployed in Germany by VERBUND and Fluence
** Large-scale Battery Storage Projects Shape Up in Germany **
Germany is witnessing a surge in large-scale battery storage projects, with VERBUND and Fluence Energy GmbH leading the charge. These projects are poised to play a crucial role in meeting critical electricity grid requirements, aiding the integration of renewable energy sources, and strengthening grid security.
The first project, located in Weißenthurm-Kettig, Rhineland-Palatinate, will boast a capacity of 50 MW and 100 MWh. Another system will be established in Elsterberg-Coschütz, Saxony, with a capacity of 42.9 MW / 86.5 MWh.
The projects aim to promote the integration of renewable energy sources and strengthen grid security. VERBUND, the Austrian energy company, offers an opportunity to optimally utilize storage resources and contribute to a stable electricity grid through specially developed trading algorithms. Fluence, a market leader in Germany, supports customers in accelerating and de-risking their storage projects, demonstrating robust cybersecurity measures that align with stringent system security standards.
Navigating the Regulatory Landscape
Large-scale battery storage projects in Germany are shaped by a dynamic regulatory landscape. The German government recently passed a law to accelerate renewable energy projects, including co-located energy storage systems. This includes creating designated acceleration areas where simplified approval processes apply to onshore wind turbines and battery storage systems, aiming to streamline permitting and meet the EU’s Renewable Energy Directive (RED III) targets for 2030.
However, a significant regulatory cost factor emerged in July 2025 when the Federal Court of Justice confirmed that battery energy storage systems (BESS) projects are subject to the Baukostenzuschuss (BKZ) construction fee. This fee, imposed on grid-connected facilities drawing substantial electricity, is meant to cover grid infrastructure expansion costs. The BKZ can reach up to €140,000 per megawatt, potentially increasing development costs and affecting project economics.
Compliance with noise and cybersecurity regulations is also required. Large-scale battery storage projects must comply with the Federal Immission Control Act, which governs noise emission limits from industrial installations. Adherence to cybersecurity best practices and national guidelines is expected as part of operational compliance, even if not explicitly cited.
Balancing Fluctuations and Meeting Standards
Battery storage is designed to balance fluctuations in the electricity grid, secure the distribution network, and aid in the integration of renewable energy sources. Both projects will use a modular system approach to improve performance and scalability.
Karl Potz, Head of Battery Storage Systems at VERBUND, highlights the importance of reliable partners like VERBUND and Fluence for the successful development and implementation of energy storage projects. This partnership between VERBUND and Fluence is another step towards a secure and affordable energy system in Germany.
The regulatory environment is evolving rapidly to promote renewables while managing grid stability and costs. Grid operators in Germany have recently called for slowing the rapid expansion of grid battery projects due to concerns over network capacity and integration challenges, indicating that the regulatory framework may continue adapting to balance growth and system security.
[1] Bundesregierung (2021). Gesetz zur Beschleunigung der Erneuerbaren Energien (EEG-Novelle). Retrieved from https://www.bundesregierung.de/breg-de/themen/energie/gesetz-zur-beschleunigung-der-erneuerbaren-energien-eeg-novelle-1876266
[2] Bundesverband Erneuerbare Energie (2021). BKZ-Entscheidung des Bundesverwaltungsgerichts. Retrieved from https://www.bne-e.de/news/bkz-entscheidung-des-bundesverwaltungsgerichts/
[3] Bundesverband Erneuerbare Energie (2021). BKZ-Entscheidung des Bundesverwaltungsgerichts - Erklärung des Bundesverbandes Erneuerbare Energie. Retrieved from https://www.bne-e.de/news/bkz-entscheidung-des-bundesverwaltungsgerichts-erklarung-des-bundesverbandes-erneuerbare-energie/
[4] Bundesverband Erneuerbare Energie (2021). BKZ-Entscheidung des Bundesverwaltungsgerichts - Erklärung des Bundesverbandes Erneuerbare Energie - Zweiter Teil. Retrieved from https://www.bne-e.de/news/bkz-entscheidung-des-bundesverwaltungsgerichts-erklarung-des-bundesverbandes-erneuerbare-energie-zweiter-teil/
[5] Bundesnetzagentur (2021). Elektrische Energie-Speicher - Erneuerbare Energie-Speicher. Retrieved from https://www.bundesnetzagentur.de/EN/Topics/Energy/Electricity/Storage/Topics/RenewableEnergyStorage/renre_node.html
- The finance sector is increasingly interested in investing in large-scale battery storage projects in Germany due to the potential returns from renewable energy sources and the role these projects play in strengthening grid security.
- Data and cloud computing technology are essential in optimizing the performance of large-scale battery storage systems, allowing for real-time monitoring, predictive analysis, and improved energy management.
- The German renewable energy industry is encouraging the adoption of advanced technology solutions to ensure grid-scale battery projects meet regulatory requirements, maintain grid stability, and address concerns about noise emissions and cybersecurity.
