Energy sources are the various means by which we obtain energy to power our homes, vehicles, and industries. They can be classified into two main categories: renewable and non-renewable. Renewable energy sources, such as solar, wind, and hydropower, are naturally replenished and have a lower environmental impact. Non-renewable sources, like coal, oil, and natural gas, are finite and can contribute to pollution and climate change. Each energy source has its advantages and disadvantages. For example, while solar energy is sustainable and reduces greenhouse gas emissions, it can be dependent on weather conditions. On the other hand, coal is abundant and provides a stable energy supply, but its combustion releases harmful pollutants. Understanding these sources helps us make informed choices about energy use and sustainability.