Enerfin relies on modular battery storage systems

28.10.2025

Source: E & M powernews

Enerfin is planning modular battery storage systems with a capacity of 200 MWh at five locations in Germany. The basis is a product from sister company Lynus.

Enerfin AG, based in Tuggen (Switzerland) and Berlin, is planning several battery storage projects in Germany with a total capacity of around 200 MWh. The Swiss project company is financing, supplying, installing and operating the storage systems. Enerfin is also responsible for marketing them via long-term power purchase agreements (PPAs) or the open-book model.

As the company announced in a press release on October 28, the locations are in Baden-Württemberg, Thuringia, North Rhine-Westphalia, Hesse and Bavaria. Enerfin does not provide more detailed information. Only this much: the individual plants have storage capacities of between two and over 15 MWh. The large-scale storage system "Greencube XL" from sister company Lynus AG will be used in particular. This is a modular large-scale storage system for use in co-location projects in which existing solar parks are retrofitted with battery storage systems. As many of these parks were originally planned without storage, integration often poses a technical and logistical challenge. For example, there is a lack of suitable space or viable routes for containers and heavy goods vehicles.

With this in mind, Enerfin has developed the modular "Greencube XL" system together with Lynus. One cube has a storage capacity of 835 kWh and an output of 400 kW. Several units can be combined to form clusters of up to 5 MWh, and ten clusters can be interconnected. The containers meet the IP54 standard and are supplied complete - including foundation base, fencing, inverter as well as liquid heating, cooling and fire-fighting system.

"With the Greencube, we can quickly adapt to local conditions without increasing the planning effort," says Enerfin CEO Paul Hauser. The company only resorts to individually configured systems if the standardized solution is not suitable.

Combination of green and grey electricity storage systems

The modular design enables Enerfin to install both green and gray energy storage systems at the same site. In one project in Baden-Württemberg, for example, three Greencubes are used as green energy storage units and four others as gray energy storage units. Both systems are connected to the electricity trading system via specially developed software that controls energy flows and automatically trades flexibilities on spot markets.

Enerfin sees itself as a full-service provider of decentralized energy solutions for renewable energies and tenant electricity. The company combines technological development, project financing and the operation of plant technology. The basis for this is the hardware and software of its sister company Lynus, which is based on machine learning algorithms and optimizes energy flows.

With the new projects, Enerfin is significantly expanding its portfolio in the field of stationary storage. The company sees this as an important step towards providing more flexibility in regional energy systems in the future - especially in conjunction with existing photovoltaic systems.

Author: Davina Spohn