Voltfang Sets a New Benchmark for Grid-Serving Large-Scale Storage with 20 MWh in Alsdorf
Aachen/Alsdorf, January 15, 2026 – Voltfang, a leading provider of European battery storage solutions for industry, commerce and grid-scale applications, has completed one of North Rhine-Westphalia’s largest grid-serving battery storage projects in Alsdorf. With a capacity of 20 megawatt-hours (MWh), the project represents a new generation of stable and scalable energy infrastructure.
The project was developed for Icecreek Energy, which operates the storage power plant. With a storage capacity of 20 MWh and an output of 9.5 MW, the project sets new standards for fast and reliable project delivery, the integration of renewable energy, and serves as a strong signal for local value creation. The large-scale battery system is directly connected to the medium-voltage grid of the local distribution system operator, Regionetz GmbH. In addition to supplying the equivalent of more than 2,000 households annually, the system provides key grid-stabilizing services. These include the provision of balancing power, flexibility to respond to electricity price volatility, and local congestion management within the distribution grid.
“Voltfang demonstrates how the energy transition can succeed at the local level and how municipalities can actively contribute. With large-scale battery storage manufactured in Europe, a key pillar for a decentralized and resilient energy supply is being established here. The project also shows how innovation, sustainability and municipal interests can be successfully aligned,” says Tim Krämer, Mayor of Alsdorf.
Municipalities benefit directly from large-scale battery storage systems: Under provisions of the German Annual Tax Act 2024, 90% of trade tax revenues generated by energy storage facilities are to remain with the host municipality. This creates a direct financial lever for municipal budgets and strengthens local acceptance. The additional tax revenues give municipalities greater financial flexibility, enabling targeted reinvestment in social infrastructure such as childcare, youth or care services, as well as other mandatory public services. At the same time, they can be used to initiate or co-finance investments in local public charging infrastructure. In this way, the value created by the storage power plant becomes directly visible, strengthening essential public services and supporting the local transport transition.
“Delivering projects of this scale requires thorough planning, scalable battery expertise and solid financing. Together with Icecreek Energy, Regionetz and the City of Alsdorf, we have shown that Voltfang is able to bring all relevant stakeholders to the table and make a measurable contribution to the energy transition,” says David Oudsandji, Co-Founder and CEO of Voltfang.
“Battery storage is a key enabler for a stable and future-proof energy system. With this project, we are making a targeted investment in infrastructure that enables the integration of renewable energy while remaining economically viable. Voltfang combines technological excellence with strong execution capabilities – exactly what the energy transition needs right now,” says Fabian Siegel, Managing Partner at Icecreek Energy.
The Alsdorf site is part of a broader strategy: Four additional Voltfang projects are scheduled to begin construction in 2026. A long-term partnership structure with institutional capital has been established for the development, financing, construction and operation of further grid-serving large-scale battery systems in Germany, providing for investments in the hundreds of millions of euros by 2029. This structure enables rapid replication and rollout of additional sites based on standardized technical solutions.
Voltfang is a cleantech company based in Aachen, Germany, offering high-performance, European-made energy storage systems for industrial, commercial and grid-scale applications. Combined with Voltfang’s advanced energy management system, commercial and industrial customers can maximize energy efficiency, optimize self-consumption, and significantly reduce both energy costs and CO₂ emissions.
Founded in 2020 at RWTH Aachen University, Voltfang quickly developed into a leading specialist for high-performance European battery storage systems. Renowned customers such as Aldi Nord, Alba Group, Schaltbau and Goldbeck rely on Voltfang’s storage solutions.
In 2024, Voltfang received the German Sustainability Award as well as the German Innovation Award in the category “Business to Business > Energy Solutions.” In 2022, the company was honored with the EES Award. In addition, founders Afshin Doostdar and David Oudsandji were named to the Forbes “30 Under 30” list.
More information: https://voltfang.de/
Icecreek Energy is a Europe-wide asset manager specializing in energy infrastructure projects. The company focuses on implementing projects that both advance the energy transition and strengthen the resilience of European energy grids. Icecreek Energy’s mission is to accelerate the expansion of sustainable and secure energy supply.
Icecreek Energy was founded in 2024 by Fabian Siegel and Dr. Matthias Mittermeier, who lead the company with their extensive experience and expertise, driving innovative solutions for the energy sector.
More information: www.icecreekenergy.com
