Solar energy is a renewable source of energy derived from the sun’s radiation. It can be harnessed in two main ways: through photovoltaic (PV) cells, which directly convert sunlight into electricity, and solar thermal systems, which use mirrors or lenses to concentrate sunlight to produce heat that can generate electricity. Solar energy is clean, abundant, and eco-friendly, making it a sustainable alternative to fossil fuels. It reduces carbon emissions, provides rural electrification, and is increasingly adopted worldwide to promote green energy solutions.