Kilowatt-hour (kWh)

A kilowatt-hour (kWh) measures electricity use over time. One kWh equals the energy consumed by a 1-kilowatt appliance running for one hour, making it a standard unit for tracking power consumption.

Energy Consumption
High kWh appliances, such as air conditioners and ovens, use more energy, while low kWh devices, like LED bulbs and laptops, consume less. Understanding kWh helps users manage electricity costs and energy use.

Efficiency & Savings
Energy-efficient appliances require fewer kWh to perform the same tasks, reducing both electricity bills and environmental impact. For example, modern refrigerators use significantly less energy than older models.

Tracking Energy Use
Kilowatt-hours help compare electricity consumption across homes, businesses, and industries. They are also a key metric for evaluating power generation, efficiency standards, and national energy policies.