vattenfall

September 11, 2026
Update 14 September 2026: Vattenfall representatives offered more details and responded to Energy-Storage.news enquiries.
September 1, 2026
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. 
August 26, 2026
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. 
December 11, 2025
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.
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June 12, 2025
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?
May 6, 2025
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.
April 25, 2025
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.
September 26, 2022
Swedish state-owned energy company Vattenfall has commissioned a green hydrogen storage pilot facility within a 100GWh capacity cavern.
July 4, 2022
Swedish public utility Vattenfall is about to start filling a 45m-high, 200MW-rated thermal energy storage facility with water in Berlin, Germany.
March 23, 2022
Swedish public utility Vattenfall has opened its Energypark Haringvliet in the Netherlands, which combines wind, solar and a 12MWh battery energy storage system (BESS).

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