Airengy has secured approval from Italy’s national transmission system operator, TERNA, for the grid connection of its large-scale lithium-ion battery energy storage system (BESS) in the Brindisi region of southern Italy. The approval, announced this week, clears the way for construction to begin once the connection agreement is signed, with a 20‑month build schedule envisioned.
According to TERNA’s authorisation, the project will be connected via the Pignicelle substation, located less than three kilometres from the development site. Designed to deliver up to 509.25 MW for several hours, the facility will have a storage capacity of up to 3 GWh – placing it among the largest battery projects currently under development in Italy.
Airengy said the Brindisi BESS will play a vital role in stabilising Italy’s electricity grid and facilitating greater integration of renewable power sources. The project marks a key step in the implementation of the company’s European growth strategy, which focuses on expanding its energy storage and long-duration storage technology activities.
With the connection point now confirmed, Airengy will advance to the next stages of project development, including detailed engineering, licensing and preparations for participation in Italian energy storage tenders. The company is also working with partners to finalise documentation for submission to the Ministry of the Environment and Energy Security (MASE).
The approval follows Airengy’s recent acquisition of six operating solar companies in Poland, totalling 34 MW of capacity. Valued at €23.7 million, the deal underlines the firm’s ambitions to combine solar generation with battery storage to create flexible, revenue-generating assets across Europe.
Executives said the Brindisi project will form a cornerstone in Airengy’s European portfolio, strengthening its position in Italy’s fast-developing energy storage market and supporting the broader transition to cleaner, more reliable power systems.
