Alpiq Acquires Bollingstedt Operational Battery Storage Project in Schleswig-Holstein from ECO STOR
Alpiq has acquired the Bollingstedt battery storage project from ECO STOR's project company ECO POWER ONE GmbH. Operational since June 2025 and operating under one of Germany's first Flexible Connection Agreements, the project is one of Germany's most advanced large-scale BESS facilities. ECO STOR retains technical and operational management post-transaction.
Transaction date: · Source: eco-stor.de
Key facts
- Transaction date
- Technology
- Battery Storage (BESS)
- Transaction price
- Not disclosed
- Buyer
- Alpiq
- Seller
- ECO STOR
- Country
- Germany
- Region
- Schleswig-Holstein
- Location
- Bollingstedt, Schleswig-Holstein, Germany
- Continent
- Europe
- Development status
- Operational
- PPA
- n.a.
Technology details
Large-scale standalone battery energy storage system, operational since June 2025. One of Germany's landmark large-scale storage projects. Operates under one of Germany's first Flexible Connection Agreements (FCA) for battery storage, developed jointly with grid operator SH Netz. ECO STOR retains technical and operational management of the asset post-transaction.
Additional information
Purchase price not disclosed. ECO STOR was advised by Société Générale (financial) and CMS (legal). The transaction builds on an existing cooperation between Alpiq and ECO STOR, including a tolling agreement for the Schuby battery storage project announced in late 2025. ECO STOR is backed by X-ELIO and Nature Infrastructure Capital (NIC). Exact capacity not disclosed in source.
Source
Original announcement: https://www.eco-stor.de/de/unternehmen/news/260825_Alpiq_uebernimmt_Batteriespeicher_Bollingstedt_von_ECO_STOR