1. Fossil Fuels: Examples include coal, oil, and natural gas. 2. Renewable Energy Sources: - Solar Energy: Generated from sunlight using solar panels. - Wind Energy: Generated from wind using wind turbines. - Hydroelectric Energy: Generated from flowing or falling water using hydroelectric power plants. - Geothermal Energy: Generated from the heat within the Earth's crust. - Biomass Energy: Generated from organic materials such as wood, crops, and agricultural waste. - Tidal Energy: Generated from the movement of tides using tidal turbines. - Wave Energy: Generated from the motion of ocean waves using wave energy converters. 3. Nuclear Energy: Generated from the splitting of atoms in a process called nuclear fission. 4. Natural Gas: A cleaner-burning fossil fuel extracted from underground reservoirs. 5. Oil: A fossil fuel extracted from underground reservoirs and used for various purposes, including transportation and heating. 6. Coal: A fossil fuel formed from the remains of plants that lived and died millions of years ago. 7. Hydropower: Generated from the energy of moving water, typically in the form of rivers or waterfalls. 8. Biofuels: Derived from renewable organic materials, such as corn, sugarcane, or algae, and used as an alternative to fossil fuels in transportation. 9. Nuclear Fusion: A potential future energy source that involves combining atoms to release energy, similar to the process that powers the sun.