
Under constructionRheinland-Pfalz
Siesbach Süd wind farm
Three Enercon E-138 turbines south of Siesbach. The infrastructure is in place, and the foundations are now being built. Commissioning planned for 2027.

In planning · Thüringen
Directly next to its own Breitenbich substation, the GERES-Group is planning a battery storage system with an output of 18 megawatts and a storage capacity of 40 megawatt hours.
The storage system uses lithium-ion technology from Huawei in a modular container design. It will be connected at 30 kilovolts to the substation, which is owned by the group itself. The site is secured, the grid operator has approved the feed-in, and the municipality supports the project.
A battery storage system takes up electricity when more is generated than consumed and releases it again later. This helps to keep the grid stable and means that wind farms need to be curtailed less often because of grid congestion.
Project timeline
Site secured
Done
Feed-in approved by the grid operator
Done
Planning
In progress
Construction
Planned
Commissioning
Planned
As with the wind farms, part of the added value stays in the region: through municipal participation and through income from leases, taxes and local contracts.
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Under constructionRheinland-Pfalz
Three Enercon E-138 turbines south of Siesbach. The infrastructure is in place, and the foundations are now being built. Commissioning planned for 2027.

PermittedThüringen
Six modern turbines will replace seven first-generation ones. Permitted in March 2026, with construction planned to start in the fourth quarter of 2027.