BESS stands for "Battery Energy Storage System". Indeed, It has become an integral part of our modern world. It's a technology used to store electrical energy on a large scale. These systems typically consist of rechargeable batteries that store energy produced from renewable sources like solar or wind power, or from the grid during times of low demand or excess generation. BESSs can then release stored energy during times of high demand or when renewable sources are not producing electricity, helping to balance the grid and improve overall energy reliability and efficiency.