V
Voltfang
Transportation · Aachen, Germany · Founded 2020
Second-life EV batteries for stationary energy storage MoreLess
Voltfang is a German cleantech company that develops and manufactures stationary battery storage systems by repurposing electric vehicle (EV) batteries. Founded in 2020 in Aachen as a spin-off from RWTH Aachen University by Afshin Doostdar, David Oudsandji, and Roman Alberti, the company addresses both energy transition and circular economy challenges. The founders' initial idea stemmed from a personal project to create a sufficient power supply for their camper van, which led them to experiment with used EV batteries.
Voltfang's core business involves requalifying used EV batteries that retain significant capacity (often over 80%) and integrating them into modular storage systems for commercial, industrial, and grid-scale applications. The company also utilizes 'New Life' batteries, which are new, unused modules from overproduction in the automotive industry. This approach extends the life of batteries, reduces the environmental footprint associated with new battery production, and creates a more sustainable energy storage solution.
The company's product offerings are designed for various use cases, including optimizing self-consumption of renewable energy, managing peak load demands to reduce energy costs, providing emergency power, and supporting EV charging infrastructure. Voltfang has developed its own AI-integrated energy management system, Venma, to intelligently control the storage systems, enabling participation in energy markets and maximizing economic benefits for customers. Their systems are scalable, ranging from 33 kWh to over 1 MWh, and are available in both indoor and outdoor turnkey solutions.
Since its inception, Voltfang has achieved significant growth, securing a total of $31.8M in funding over multiple rounds, including a €15 million Series B round in June 2025. The company serves notable clients like Aldi Nord, Alba Group, and Goldbeck. In 2025, Voltfang opened a new 6,000 m² production facility in Aachen, described as Europe's largest second-life battery factory, with plans to scale production capacity to 1 GWh annually.
Keywords: second-life batteries, energy storage systems, cleantech, circular economy, EV battery repurposing, battery energy storage system (BESS), renewable energy storage, industrial energy storage, commercial energy storage, grid-scale storage, peak shaving, energy management system, load management, sustainable energy, battery recycling, requalified batteries, stationary storage, German engineering, RWTH Aachen spin-off, energy independence
Company overview
Voltfang company information
The essential company record, classifications and operating signals in one place.
- Status
- Operational
- Founded
- 2020
- Headquarters
- Aachen, Germany
- Employees
- 104
- Open positions
- 15
- Dealroom signal
- 83.1
Valuation & funding
Voltfang funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| DEBT✓Debt | Jun 2026 | $14M | — | Raiffeisen Bank International | ↗ |
| DEBT✓Debt | Jul 2025 | $3.3M | — | Commerzbank | ↗ |
| SERIES B✓Equity / VC | Jun 2025 | $17M | $66M | Helen Ventures · Daphni · Fiege Logistics · PT1 Ventures | ↗ |
| GRANT✓Other financing | Oct 2024 | $880K | — | Undisclosed | ↗ |
| SERIES A✓Equity / VC | Oct 2024 | $8.8M | $35M | Daphni · Aurum Fund Management · PT1 Ventures · Maximilian Viessmann | ↗ |
| EARLY VC✓Equity / VC | Aug 2023 | Viessmann | ↗ | ||
| EARLY VC✓Equity / VC | May 2023 | PT1 Ventures · Aurum Fund Management · AENU · Helen Ventures | ↗ | ||
| Other✓Other financing | Nov 2022 | Undisclosed | — | ||
| SEED✓Equity / VC | Mar 2022 | Gabor Cselle · AENU · Andreas Booke · Ralf Christian | ↗ | ||
| SEED✓Equity / VC | Aug 2021 | FORWARD.one · Dastore · vent.io · Vesta Venture Holding | — |
Financials
Revenue, earnings and profit over time
Reported history and available estimates. Estimated years are marked “E”; sparse fields are left blank rather than inferred.
| Year | Revenue | Growth | Profit | Margin |
|---|---|---|---|---|
| 2026 | $33K | 0% | −$3.1M | -9359.8% |
| 2025 | $33K | 0% | −$3.1M | -9359.8% |
| 2024 | $33K | 0% | −$3.1M | -9359.8% |
| 2023 | $33K | 0% | ||
| 2022 | $33K | -49.4% | ||
| 2021 | $66K | — | ||
| 2020 | — | — |
Growth signals
Voltfang website traffic
Latest recorded traffic for Voltfang is 12K monthly website visits, up 37.9% over the last three months. Voltfang's team grew 6.1% over the past year.
Hiring
Open positions at Voltfang
Current openings linked to this company in Dealroom.
Comparisons
Voltfang compared with similar companies
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Talent graph
Voltfang's talent
Source: Dealroom Talent Intelligence.
Investors
31 investors on Voltfang's cap table
Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.
Global footprint
Where Voltfang has talent and traffic
team presence
In the news
Latest news about Voltfang
Recent press, funding announcements, and product moves mentioning Voltfang — open to read from the original sources.
Market sentiment
What the market is saying about Voltfang
An AI-synthesized read of the highest-engagement posts about Voltfang on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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