Watts are a unit of measurement used to quantify power, which is the rate at which energy is used or produced. One watt is defined as one joule of energy transferred per second. This measurement is commonly used to describe the power output of electrical devices, such as light bulbs and appliances. In practical terms, when you see a light bulb rated at 60 watts, it means that the bulb consumes 60 joules of energy every second it is on. Understanding watts helps consumers make informed choices about energy efficiency and electricity usage in their homes and businesses, impacting both costs and environmental sustainability.