ATESS is playing a key role in Cuba's renewable energy transformation by offering advanced energy storage solutions that address grid instability, enhance energy independence, and maximise the use of solar resources. The Cuba Energy Storage Project Bidding initiative aims to deploy 2. 1 GW of storage capacity by 2030, creating urgent demand for international expertise. These Battery Energy Storage Systems (BESS), also referred to as "concentrator units," are being placed at Cueto 220, Bayamo. Huawei's energy storage project is advancing significantly, with distinct milestones achieved in 2023, expanding its global influence in renewable energy solutions, increasing partnerships with local utilities, and enhancing technological innovations to improve. This article explores the current state of solar power plants in Cuba, their applications, and how companies like SunContainer Innovations contribute to this green.