A microgrid is an autonomous electrical system (generation, storage, loads) that operates connected to the main grid or islanded (disconnected). You design the generation mix (solar panels, wind turbines, conventional generation), add energy storage (batteries), implement controls (algorithms that balance generation and demand), and ensure protection systems (relays, breakers) prevent damage if the main grid fails. A typical workflow: assess load profile (customer's energy consumption patterns), evaluate renewable potential (solar/wind resource), size battery (for resilience and peak shaving), design controls (frequency/voltage stability algorithms), model stability, and deploy.