Its sustainability and low environmental impact are major advantages, but there are challenges, such as intermittent sunlight, land use needs, and the scarcity of materials. Solar energy is. . Solar energy is the radiation from the Sun capable of producing heat, causing chemical reactions, or generating electricity. The total amount of solar energy received on Earth is vastly more than the world's current and anticipated energy requirements. This technology is not just a buzzword but a fundamental part of the transition to cleaner, more efficient energy systems.