Alternative energy sources are forms of energy that are not derived from fossil fuels. They include options like solar energy, wind energy, hydropower, and geothermal energy. These sources are considered more sustainable and environmentally friendly because they produce little to no greenhouse gas emissions, helping to combat climate change. Using alternative energy can reduce dependence on non-renewable resources and promote energy security. For example, solar panels convert sunlight into electricity, while wind turbines harness wind power. By investing in these technologies, communities can create cleaner energy solutions and support a healthier planet for future generations.