Although vertically integrated ESS-cell suppliers retain more control over their supply chain, system integrators’ flexibility may help them in the medium-term, writes Solar Media Market Research analyst Charlotte Gisbourne.

Japan’s NGK Insulators has discontinued its sodium-sulfur (NAS) battery product line, with the exit of its partner, BASF, thought to have led to the final decision.

The low-carbon subsidiary of German energy company LEAG is constructing Europe’s largest single-site battery storage project, in partnership with Fluence.

UK BESS projects totalling nearly 4GWh awarded planning consent in October, there is now nearly 22GWh under construction.

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BESS platform Eco Stor has marked the start of construction on a 300MW/700MWh BESS project in Germany, just days after RWE did the same.

Trina Storage has signed a memorandum of understanding (MoU) with Pacific Green Energy Group to supply up to 5GWh of battery energy storage systems between 2026 and 2028.

The government of Spain has chosen the 143 energy storage projects that will receive capex support from an EU-backed scheme, totalling nearly 9GWh of capacity.

TotalEnergies is reportedly considering selling a stake of ‘about 50%’ in a portfolio of BESS projects in Germany it is deploying via Kyon Energy.

In a BESS market where success hinges on rapid, high-performance, and cost-effective deployment, the role of the system integrator has never been more critical.