October 24, 2025: Battery storage capacity in Italy surged more than 55% year-on-year toward the end of summer, totalling over 17GWh, according to latest data.

Italian transmission system operator Terna said on September 19 the storage capacity, recorded as of August 31, was equivalent to 7MW of nominal power across roughly 837,000 storage systems.

Within this, utility-scale installations added nearly 3MWh of capacity and 709MW of nominal power between January and August of this year, driven by forward contracting mechanisms under the national capacity market framework.

Increasing reliance on battery storage comes as Italy expands integration of renewable power generating capacity — of which more than 4,000MW of capacity was installed between January and August, Terna said.

Batteries International reported last month that Eni Storage Systems had started developing a stationary lithium batteries operation in Italy.

The company, which is a joint venture majority owned by Italian energy group Eni (51%) and Seri Industrial, said it aimed to establish a hub in Brindisi capable of producing over 8GWh per year of lithium iron phosphate batteries, primarily intended for stationary energy storage, using a water-based process.

Meanwhile, renewables group Zelestra and Swiss energy firm BKW are to develop a 2GWh BESS in northern Italy, with construction starting in 2027.