Allianz acquires 50% stake in German projects: TotalEnergies, the French energy group, has sold 50% of its stake in 11 large-scale battery storage projects – representing a combined 789 MW/1,628 MWh – in Germany to global investment management firm Allianz Global Investors. Allianz has signed the agreement on behalf of Allianz insurance companies and Allianz European Infrastructure Fund II. Together, the partners will invest €500 million to build these projects, with 70% of it raised through debt. Developed by TotalEnergies Subsidiary Kyon Energy, these facilities are scheduled for commissioning by 2028. Stéphane Michel, President Gas, Renewables & Power at TotalEnergies, said this transaction is in line with the company’s business model, allowing it to optimize capital allocation in its integrated power activities. Last year, TotalEnergies sold 50% of its stake in 1.4 GW of its US solar assets to KKR and in 270 MW wind and solar portfolio in France to Eiffel Investment Group as part of this strategy (see TotalEnergies Sheds Solar & Wind Asset Stake In US & France).
Virtual battery portfolio marketing: Vattenfall, the Swedish energy group, has launched active marketing of a virtual battery storage portfolio with technology company terralayr in Germany. The virtual portfolio of 8 decentralized large-scale batteries located in Germany is now available as a single flexible storage pool via terralayr’s proprietary digital platform LAYR. Starting with 5 MW, the managed capacity will gradually expand to 55 MW, they add. While Vattenfall provides the optimization and guaranteed revenues, terralayr provides digital and physical infrastructure. The system enables real-time optimization of storage output for energy trading while improving grid reliability by reducing the impact of individual unit outages. The companies say the project aims to help scale battery flexibility and support the transition to a low-carbon power system.
Solis launches energy storage systems: Solis, the Chinese brand primarily known as a leading global solar inverter supplier, has launched its first dedicated residential energy storage portfolio under its new SolisStorage brand. The company says this marks the shift from being primarily an inverter manufacturer to a full energy storage solution provider. The portfolio includes IntelliHome wall- and floor-mounted batteries (5–16 kWh), FlexHome stackable systems (5–40 kWh), and FlexAIO all-in-one high-voltage systems (15–40 kWh). Built with lithium iron phosphate (LiFePO₄) chemistry, the batteries support over 6,000 cycles, more than 90% depth of discharge, and up to 10 years of operation. Integrated with hybrid inverters and the SolisCloud energy management platform, the systems allow homeowners to manage solar generation, storage, and consumption through a single residential energy ecosystem, says the company. It is now introducing the range to the European residential segment.
Storage project partly online in India: ACME Solar Holding Limited (ASHL) has commissioned 2 phases of its 285 MW/600 MWh battery energy storage system (BESS) project in Jaisalmer, Rajasthan. Phase I with 19 MW/38 MWh was commissioned by its subsidiary ACME Suryodaya Private Limited at Jaisalmer’s Sanwara and Mehar Nagar villages in Pokhran. Phase II with 38 MW/82 MWh capacity was commissioned on March 3, 2026, announced the company.
30 MW changes hands: S4 Energy, the Dutch grid-scale BESS company, is expanding its UK footprint with the acquisition of a 30 MW battery storage project. It will acquire the 30 MW project in Northwest England from Electric Land. The latter will retain the freehold of this asset in its Stonepeak-backed platform ELI. S4 also has operational assets in the Netherlands and under-construction facilities in Germany as part of its strategy to become a pan-European storage platform.
