Battery storage makes PV park in Neresheim grid-compatible

28.04.2025

Source: E & M powernews

The Mobility House Energy is working with partners to implement a "co-location project" in Neresheim (Baden-Württemberg): a battery storage system is to supplement an existing PV system there.

In Neresheim, 20 kilometers north of Aalen, a combined energy project is currently being developed to make better use of the existing grid connection point. The project is backed by Brandstätter Solarpark GmbH, the storage system manufacturer Fenecon and the Munich-based company "The Mobility House Energy". The latter specializes in the marketing of stationary battery capacities and charging infrastructure solutions.

It is a so-called co-location project. This means that it combines different technologies such as photovoltaics and storage at a common grid connection point. This enables more efficient use of the grid and a needs-based feed-in of renewable energies.

The project is intended to show how existing photovoltaic systems can be expanded in a sustainable way by integrating a storage system. The use of the existing grid connection infrastructure is optimized without the need for an additional connection.

The battery storage system will have a capacity of 14,000 kWh and an output of 8 MW. The adjacent 10 MW solar park has already been feeding electricity into the grid for years. The amount of electricity produced is enough to supply 2,800 households with an average annual consumption of around 3,500 kWh with green electricity. In future, the surplus energy from the park can be stored temporarily and released again depending on the load on the grid. This helps to smooth load peaks and increases the economic efficiency of the system.

Fast project implementation and technical details

According to "The Mobillity House Energy", the project decision was made in January of this year. The battery storage system is scheduled to go into operation in July. The company refers to the transmission system operator Transnet BW. According to the operator, the on-site feed-in capacity is designed for around 8 MW and a draw of 4.5 MW. This allows for flexible operation of the storage facility.

The storage system consists of eleven so-called "Fenecon Industrial L" units, each with an output of 736 kW and a storage capacity of 1,288 kWh. The combination with photovoltaic generation enables grid-supportive operation, in which electricity can be both stored and drawn - depending on grid requirements and solar radiation.

Author: Davina Spohn