A watt is a unit of power that measures how much energy is used or produced over time. It helps us understand how much electricity devices consume. For example, a standard light bulb might use 60 watts, meaning it consumes 60 joules of energy every second. This measurement is important for managing energy use in our homes and businesses. When we talk about electricity, we often hear about kilowatts (1,000 watts) and megawatts (1 million watts). These larger units are commonly used to describe the power output of things like power plants or the energy consumption of large buildings. Understanding watts helps us make informed choices about energy efficiency and costs.