Energy mix means the different sources of energy we use for electricity. The main types of energy included in the mix are coal, natural gas, nuclear power, and renewable sources like wind, solar, and water. Coal and natural gas are found in the ground, and when burned turn into heat which powers turbines to generate electricity. Nuclear power is created in a nuclear power plant by splitting apart large atoms of uranium. Renewable sources use things like the sun, wind, and water to create clean electricity. The energy mix is important because the mix of energy sources we use has a big effect on the environment. By using more renewable energy sources, we can help reduce pollution and have cleaner air, water, and land.