Energy use refers to the consumption of energy resources to perform various activities, such as heating, cooling, transportation, and powering electronic devices. Common sources of energy include fossil fuels like coal, oil, and natural gas, as well as renewable resources like solar, wind, and hydropower. Efficient energy use is important for reducing costs and minimizing environmental impact. Understanding energy use helps individuals and businesses make informed decisions about their consumption patterns. By adopting energy-efficient practices and technologies, such as LED lighting and energy-efficient appliances, users can lower their energy bills and contribute to a more sustainable future.