Power output refers to the amount of energy produced or delivered by a system over a specific period of time. It is commonly measured in watts (W), where one watt equals one joule per second. This concept is crucial in various fields, including engineering, physics, and renewable energy, as it helps assess the efficiency and performance of machines, engines, and electrical devices. In the context of electric generators, power output indicates how much electrical energy can be generated from mechanical energy. For example, a wind turbine converts wind energy into electrical power, and its power output can vary based on wind speed and turbine design. Understanding power output is essential for optimizing energy production and consumption.