Solar energy is a significant source of renewable energy that plays a crucial role in succeeding sustainable development energy requirement. It is a clean and eco-friendly technology that offers an attractive energy supply for generating electricity. Solar photovoltaic technologies and concentrated solar power are continuously evolving to meet our energy needs. The significant installed capacity of solar energy applications globally supports the energy sector and provides business opportunities for people. This chapter aims to emphasize the critical role of solar energy in sustainable development, along with its environmental issues, concerns, and applications of solar energy. It provides an in-depth analysis of solar energy sustainability, comprising its environmental and commercial impact. The paper confidently identifies India’s contributions to the field of solar energy applications toward sustainable development. It highlights how solar energy is meeting people’s energy needs, creating employment, and augmenting environmental protection. Overall, solar energy is a reliable and efficient source of energy that is crucial for achieving a sustainable future. Therefore, it is essential to prioritize its development and implementation in global energy solutions.