Battery energy storage systems (BESS) perform optimally under various weather conditions. Their key feature is providing backup power during outages or extreme weather events, reducing the need for costly distribution upgrades or emergency generators. For instance, BESS can assist grid-tied and hybrid solar and wind systems with energy time-shift and demand-side management. In windy weather, the system can store excess power produced and release it when required. Similarly, during unpredictable weather patterns affecting renewable energy production, such as cloudy or low wind days, a BESS can ensure a stable energy supply.