The results of this study reveal that, with an optimally sized energy storage system, power-dense batteries reduce the peak power demand by 15% and valley filling by 9. Furthermore, a hybrid energy. In order to achieve the goals of carbon neutrality, large-scale storage of renewable energy sources has been integrated into the power grid. Under these circumstances, the power grid faces the challenge of peak shaving. They enable load shifting to optimize energy usage, 3. Among these, the capacity to modulate supply and demand. Peak shaving and valley filling energy storage Peak shaving and valley filling energy storage Peak Shaving.