Given the issues around fossil fuels, carbon emissions, and air pollution, more and more states are requiring their public utilities to generate a percentage of their power from renewable sources. Renewable energy, unlike fossil fuels, is any type of energy derived from resources that are regenerative and cannot be depleted. Because fossil fuels are remnants from ancient plant deposits from millions of years ago, we can’t make any more. Renewables, however, come from clean sources — such as the sun, wind, and plants. The sun and the wind aren’t going anywhere, and we can grow as many plants as we want. The result: less pollution and reduced global warming.