Abstract
Solar energy represents one of the most promising and rapidly advancing fields in the global transition toward sustainable energy systems. This research paper provides a comprehensive examination of solar energy technologies, encompassing photovoltaic (PV) systems, concentrated solar power (CSP), and emerging innovations such as perovskite solar cells and bifacial modules. The paper analyzes the historical development of solar technologies, current global deployment trends, economic viability including levelized cost of energy (LCOE), environmental impact, grid integration challenges, and prospects. With global solar capacity surpassing 1.5 terawatts in 2025 and costs continuing to decline at unprecedented rates, solar energy has firmly established itself as the cornerstone of the clean energy transition. Key findings suggest that solar energy, combined with effective storage solutions and smart grid infrastructure, has the technical and economic potential to supply most of the global electricity demand by 2050. Policy frameworks, technological breakthroughs in storage, and international cooperation are identified as critical enablers for accelerating solar deployment at the scale required to meet climate targets.