Energy carriers are substances or systems that store and transport energy from one place to another. Common examples include electricity, hydrogen, and fossil fuels like coal and natural gas. These carriers allow energy generated from various sources, such as solar or wind, to be used when and where it is needed. Energy carriers play a crucial role in our daily lives, powering homes, vehicles, and industries. They help convert energy into usable forms, making it easier to manage and distribute. Understanding energy carriers is essential for improving energy efficiency and transitioning to more sustainable energy systems.