Renewable energy is energy that is generated from natural resources that are replenished constantly, such as sunlight, wind, water, geothermal heat, and biomass. Unlike non-renewable sources of energy like coal, oil, and natural gas, renewable energy sources are considered sustainable because they do not deplete or damage the environment, and their use does not contribute to climate change. Renewable energy technologies are used to harness these natural resources to generate electricity, heat buildings, power vehicles, and provide other forms of energy. The development and adoption of renewable energy sources are crucial to reducing greenhouse gas emissions, combating climate change, and creating a sustainable future.