Italian energy developer GreenGo has received full authorisation for its 120-megawatt San Sostene battery energy storage system (BESS) in Calabria, bringing its total approved storage capacity to 249MW, the company said on Monday.
The project will provide 480 megawatt-hours of storage capacity and will connect to the 150kV SE San Sostene grid node. It is designed to charge during periods of peak renewable generation and discharge during high-demand periods, GreenGo said.
“San Sostene is a clear example of how an M&A transaction, guided by a vision of industrial development, can generate concrete value in a short time,” said Alberto Piva, GreenGo’s Director of Business Development and M&A. “In just over a calendar year, we obtained the Single Authorisation, transforming the investment into a strategic asset perfectly positioned on the network.”
The company acquired the project in 2024 and said it achieved full regulatory approval within 18 months, including 13 months from the initial application. GreenGo noted that 200MW of its authorised storage capacity was approved in the past six months.
“With San Sostene, we are consolidating GreenGo’s presence in the storage sector,” said Fabio Amico, Chief Technology Officer and Partner. “This result demonstrates not only the speed and efficiency of our technical and authorisation teams, but also the industrial vision that guides us in the development of strategic energy infrastructure and storage.”
GreenGo added that all of its battery storage pipeline, totaling 998MW, is now eligible to participate in Italy’s upcoming MACSE capacity market auction, which targets energy storage development in the south and Sicily.
The San Sostene project is among the first in Italy to be approved through the country’s new digital ministerial permitting platform. GreenGo said it has expanded its overall storage portfolio to over 400MW in under two years, more than half of which are authorised. Its total pipeline now includes 1.73GW across 75 projects in 12 regions, with 693MW either authorised or ready-to-build and 40MW currently under construction.
