- Sonnedix acquires a 260MW BESS portfolio in Tuscania comprising two standalone projects.
- The deal builds on Sonnedix's existing Italian asset portfolio, which recently passed 1GW of capacity.
- This acquisition further strengthens Sonnedix’s ability to provide competitively priced, flexible renewable power in Italy, reinforcing the country’s importance as a core market in its global battery storage and hybridisation strategy.
Sonnedix, a global renewable energy company with 11GW of total capacity, has announced the acquisition of a 260MW battery energy storage system (BESS) portfolio in Tuscania, Italy. This deal increases the company's total BESS portfolio to approximately 2.8GW and marks a further step in one of Europe's fastest-growing energy markets.
The portfolio, made up of two adjacent standalone BESS projects, one 160MW/4H and another 100MW/4H, acquired from Sphera Energy, showcases Italy as a core market for Sonnedix's global storage strategy, adding 260MW /4H total BESS capacity.
This acquisition builds on Sonnedix's existing Italian footprint and reflects its ongoing commitment to the country’s energy transition. In March 2026, the company acquired six solar PV plants backed by long-term power purchase agreements (PPAs) pushing Sonnedix's total capacity in Italy past 1GW. As Italy’s transition accelerates, batteries are playing an increasingly central role, helping balance supply and demand and building a more resilient grid.
Battery storage is a central pillar of Sonnedix's global portfolio strategy. As power systems absorb more variable renewable generation, storage assets like the Tuscania portfolio help address system flexibility, affordability, and energy security, priorities shaping investment decisions across the markets where Sonnedix operates.
Axel Thiemann, CEO of Sonnedix, said: 'We took our first step into battery storage in other Italian regions last year. Now we're building on that with real scale in Tuscania. Batteries let us do more with the power we're already generating, storing it and deploying it when it's needed most. Hybridisation and optimisation are the direction our whole portfolio is heading, and with our long-term footprint and deep expertise in the region, Italy is well placed to lead the way.'
Giuseppe Marona, Managing Director Italy at Sonnedix, said: 'We've gone from building a solar base to building a genuinely flexible energy business here in under two years. Storage changes what we can offer the grid, and it changes how our solar assets perform. I’m excited to see our BESS portfolio continue to grow; Tuscania is a strong addition, and it won't be the last.'
About Sonnedix
Sonnedix is a global renewable energy company delivering 100% clean electricity directly to its customers through a diversified portfolio of solar, wind, and storage assets. With nearly two decades of sustained growth, the company continues to drive the energy transition by acquiring, developing, building, and operating long-term projects, offering innovative solutions tailored to each customer’s needs.
Sonnedix currently has a total portfolio capacity of 11GW, including more than 1GW under construction, 4.8GW in operation, and a development pipeline of 5GW. The company operates in Chile, France, Germany, Italy, Japan, Poland, Portugal, Spain, and the United Kingdom, and continues to expand its global footprint across OECD countries through both acquisitions and greenfield development.
Source: Sonnedix
