German CleanTech Startup Voltfang Secures €15 Million In Series B Round And Launches Europe Largest Second-life Battery Factory

The round was led by Dutch DeepTech investor FORWARD.One, with support from existing investors like Interzero, PT1, Helen Ventures, Daphni, and Aurum Impact (Goldbeck family office). New investors Fiege Ventures and Newberry Investments also joined the round.

David Oudsandji, CEO and Co-founder of Voltfang, commented: “This financing round directly responds to the enormous surge in orders we experienced in Q1. Expanding the energy infrastructure is urgently needed across Germany and Europe, especially as we work to build resilience against external energy dependencies. We must act now to create more grid flexibility using large-scale battery storage. Doubling our company valuation in just six months is a strong signal of the market’s confidence in Voltfang’s technological relevance and growth potential.”

Customers include major companies like Aldi Nord, Alba Group, Fiege Logistik, and Goldbeck.

Voltfang is expanding with a new production facility in Aachen, North Rhine-Westphalia (NRW), called the “Voltfang Future Fab.” This new site will allow the company to scale up to 1 GWh of energy storage capacity.

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By 2030, Voltfang aims to roll out enough battery storage to replace the Weisweiler coal power plant, strengthening Germany’s energy independence.

The company plans to add 250 MWh of sustainable storage across Europe by end of 2026.

Voltfang is also enhancing its Venma energy management system, powered by AI, to help businesses reduce electricity costs, boost self-consumption, and engage in energy trading.

Their move into the 6,000 m² TRIWO Technology Park, formerly used by electric carmaker Next.e.GO, supports rising demand for large-scale battery solutions.

Voltfang’s storage capacity grew from 5 MWh in 2023 to 20 MWh in 2024, and it aims to reduce Europe’s dependence on battery imports from China and other Asian markets.

By using second-life and surplus batteries from Europe, Voltfang wants to help build a resilient and independent battery industry in Germany and across Europe.

Germany’s energy storage needs are rising fast — with Fraunhofer Institute estimating a requirement of 100 GWh by 2030, and 180 GWh by 2045.

Being located near other cutting-edge companies like Cylib and Black Semiconductor in Aachen’s Battery Circle ecosystem also supports innovation and strengthens the region’s role as a tech hub for battery technology.

Paul Pruijmboom, Partner at FORWARD.One, added: “Voltfang perfectly embodies our investment strategy: strong hardware paired with intelligent software. With their powerful and truly European storage technology, the team is tackling one of the most pressing challenges of our time – enabling the energy transition. We firmly believe that local energy infrastructure will be a key pillar of Europe’s future economic growth.”

Voltfang’s systems use high-performance, requalified battery modules from the European automotive industry, helping to boost energy security and build a more resilient energy infrastructure.

About Voltfang

Voltfang, a cleantech company founded in 2020 at RWTH Aachen University by Afshin Doostdar and David Oudsandji, builds high-performance battery storage systems for industrial, commercial, and grid-scale use. Their systems are made using requalified EV batteries from the European auto industry.