Our 20 and 40 foot shipping containers are outfitted with roof mounted solar power on the outside, and on the inside, a rugged inverter with power ready battery bank. By 2025, 200 MW of battery systems will be installed to store solar energy, key to stabilizing the grid. What's really going wrong? Cuba currently operates 186 renewable. On Saturday, Cuba initiated the installation of solar energy storage batteries at four electrical substations, marking a significant step in addressing its energy challenges. The total capacity will be 1,200 MW. These Battery Energy Storage Systems (BESS), also referred to as "concentrator units," are being placed at Cueto 220. These Battery Energy Storage Systems (BESS), also referred to as "concentrator units," are being placed at Cueto 220, Bayamo.