A trio of large-scale 4-hour BESS projects in Germany have progressed towards construction, from Enertrag and Enlight, Vattenfall and Fluence, and Giga Storage.

Update 14 September 2026: Vattenfall representatives offered more details and responded to Energy-Storage.news enquiries.

BESS owner-operator Return has signed a long-term toll with power firm Vattenfall for its 200MW/800MWh Sirius BESS project in the Netherlands, concurrent with financial close. 

A trio of BESS updates in Germany from power firm Alpiq, CATL-backed system integrator CNTE and virtual tolling platform Terralayr, totalling around 260MW of operational capacity. 

A trio of large-scale BESS announcements by major power firms of 700-800MWh capacity each in Germany show the country’s energy storage market moving into the new era of scale.

Terralayr has made headlines recently with its BESS aggregation tolling platform, executing long-term tolls in Germany with big power firms RWE and Vattenfall, but how unique are these deals in reality?

Power generation and trading company Vattenfall has signed a seven-year, 55MW multi-project BESS tolling deal in Germany with owner-operator and virtual aggregator Terralayr.

Investor Return has started construction on a 100MW/200MWh BESS project in the Netherlands, with energy storage technology supplied by system integrator Alfen and power company Vattenfall enlisted as long-term offtaker.

Swedish state-owned energy company Vattenfall has commissioned a green hydrogen storage pilot facility within a 100GWh capacity cavern.

Swedish public utility Vattenfall is about to start filling a 45m-high, 200MW-rated thermal energy storage facility with water in Berlin, Germany.