With soaring renewable penetration, persistent grid congestion, and growing volatility in electricity prices, South Europe are facing unprecedented challenges in grid stability and asset optimization. Battery Energy Storage Systems (BESS) have become a strategic imperative for grids operators, Independent Power Producers (IPPs), and asset owners alike. Yet, critical barriers remain: lengthy grid connection queues, evolving grid service requirements (Grid-Forming, fault ride-through), fragmented regulatory frameworks across borders, and the urgent need to monetize flexibility across multiple revenue streams. The summit will bring together Grids, IPPs, investors, technology providers, and policymakers to discuss the policies, grid codes, business models, and technologies and define the future of BESS in South Europe.