Eni Storage Systems to develop stationary lithium batteries

Launches activities in Brindisi

London, September 24, 2025, (Oilandgaspress) ––Eni and Seri Industrial announce that Eni Storage Systems, a joint venture established by Eni (50% plus one share) and Fib (50% minus one share), a Seri Industrial subsidiary, has begun the operations in the development of industrial project for the production of stationary lithium batteries in the Brindisi industrial area.

Eni Storage Systems aims to establish a hub capable of producing over 8 GWh per year of lithium-iron-phosphate batteries, primarily intended for stationary energy storage, using a water-based process. The project is currently in the engineering phase and undergoing economic, financial and authorisation assessments, which are expected to be completed by the first quarter of 2026, before moving into the execution phase.

At the Brindisi site, industrial activities will also include the production of cathode active material – a lithium-iron-phosphate that stores and releases lithium ions in the cathode during charge and discharge cycles – as well as the assembly of batteries into BESS (Battery Energy Storage Systems), serving both the Brindisi and Teverola facilities. In future, the Brindisi site will also implement battery recycling, which, together with the production of cathode active material, will be available to other operators in the sector. Seri Industrial and Eni aim to gain more than 10% of the European stationary battery market, creating an integrated, state-of-the-art hub between Brindisi and Teverola to drive sustainability and the energy transition.


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