Energy sources have different applications based on their characteristics and capabilities. For example, fossil fuels like coal, oil, and natural gas are used for electricity generation, heating, transportation, and in various industries. Renewable energy sources such as solar, wind, hydroelectric, and geothermal energy are used for generating electricity and powering vehicles. Nuclear energy is used for electricity generation through nuclear power plants. Biomass energy is used for heating, electricity generation, and industrial processes. Hydrogen energy is used in fuel cells for electricity production. The application of energy sources depends on factors like availability, cost, and environmental impact.