Voltfang

Voltfang is a cleantech company founded in 2020 as a spin-off from RWTH Aachen University in Germany, developing battery energy storage systems built from repurposed electric-vehicle batteries. It was set up to give retired EV battery packs a second life while helping commercial and industrial sites manage energy costs.

The company assembles second-life battery modules into containerised storage systems, ranging from 180 kWh commercial units to multi-megawatt installations, paired with its own Voltfang EMS software for peak shaving, solar self-consumption and intraday trading. Customers include manufacturers, retailers, logistics operators and public institutions such as ALDI Nord and McDonald’s locations in Germany.

1. Second-life battery storage: repurposes used EV battery packs into stationary storage systems.

2. Commercial units: containerised systems from 180 kWh capacity and 184 kW power.

3. Large-scale systems: installations from 5.3 MWh capacity for industrial and grid use.

4. Voltfang EMS: proprietary software manages peak shaving and self-consumption optimisation.

5. Intraday trading: EMS enables participation in short-term electricity markets.

6. Flexible financing: leasing and instalment plans offered through Deutsche Leasing.