Power sources are the means by which energy is generated to perform work or provide electricity. Common types include fossil fuels like coal, oil, and natural gas, which are burned to produce energy. Renewable sources, such as solar panels, wind turbines, and hydropower, harness natural processes to generate electricity without depleting resources. Each power source has its advantages and disadvantages. For instance, while fossil fuels are efficient and widely used, they contribute to pollution and climate change. In contrast, renewable sources are cleaner and sustainable but may require significant initial investment and infrastructure development.