Zurich-based energy storage owner-operator BW ESS and Italian peer ACL Energy have agreed to expand their existing battery energy storage system (BESS) <a href="https://renewablesnow.com/news/bw-ess-penso-power-to-set-foot-in-italy-via-395-mw-battery-jv-848563/" target="_blank">partnership in Italy</a> by committing to co-develop 11 more projects with a combined capacity of 2.5 GW.