This report examines the crucial role of energy storage in decarbonizing electricity systems, focusing on enhancing the integration of renewable energy sources like wind power while reducing reliance on fossil fuels. It addresses the challenges of climate change and the need for innovative solutions in electricity production, highlighting how energy storage can provide operational flexibility, improve the utilization of renewable generation assets, and facilitate grid stability. The study reviews the current literature on decarbonization targets, the impact of renewable energy technologies, and the economic value of energy storage, considering factors such as cost, sustainability, and the reduction of greenhouse gas emissions. The analysis includes discussions on wind power's potential, the effects of relying exclusively on renewables, and the curtailment of renewable energy, ultimately emphasizing the significance of energy storage in achieving a carbon-free electricity sector. This document is available on Desklib, a platform offering study tools and resources for students.