Renewable energy sources are important because non-renewable resources like coal, oil, and natural gas are being depleted and are expensive and damaging to the environment. Switching to renewable sources like wind, solar, and geothermal energy would provide a sustainable option for the future. Renewable energy can help reduce global warming by limiting carbon emissions and pollution, and can help address the impending depletion of fossil fuels as demand rises. While the initial investment in renewable energy infrastructure may be high, maintenance costs are low and the sources are abundant, making it a financially beneficial option over time.