Underground Gas Storage (UGS) plays a pivotal role in addressing the challenges associated with meeting peak Gas demand and responding to periods of renewable energy intermittence. By enabling the storage of large Gas volumes, UGS helps energy markets navigate seasonal shifts, absorb short-term shocks, and ensure reliable, timely delivery to consumers. It balances supply and demand, stabilises transmission networks, enhances energy security, supports efficient market operations, and optimises production flows—making it a critical enabler of integrated and resilient energy systems.