Nanotechnology is playing a crucial role in the development of renewable energy. For instance, nanomaterials are used in the creation of more efficient solar panels, batteries, and fuel cells. Quantum dots and other nanostructures have the potential to significantly increase the efficiency of solar cells, making solar power more viable and cost-effective. Nanotechnology also aids in improving the performance and lifespan of batteries, which is essential for energy storage solutions in renewable energy systems.