Decentralized Energy Systems (DES) are localized energy infrastructures that generate, store, and distribute power close to where it's consumed. Unlike traditional centralized grids, DES leverage small-scale, renewable energy sources—such as solar panels, wind turbines, and battery storage—often within microgrids or community-level setups. These systems enhance energy resilience, reduce transmission losses, and offer greater control to local communities over their energy resources. Key features include integration with smart grids, support for peer-to-peer energy trading, and adaptability to various scales, from rural areas to urban centers.