This article provides an overview of recent advancements in the design and performance of flat plate solar collectors (FPSCs) for solar thermal power plants. The article highlights various strategies that have been explored to improve the efficiency of FPSCs, including the use of Micro Heat pipe Arrays, nano-materials, phase change materials, and novel tube geometries. The study emphasizes the importance of keeping costs low while improving overall collector efficiency and highlights the research gap in distinct aspects of FPSCs for heat enhancement. The article concludes that these advancements have the potential to significantly increase the use of solar thermal power, which could play a critical role in reducing our dependence on fossil fuels and mitigating climate change. This study examines the power potential and carbon emission reduction capabilities of solar collectors in India, taking into account the local climatic conditions and geographical location. The study also identifies major challenges and opportunities in the current research domain. Based on the analysis, the study highlights the opportunities for commercializing low cost solar plants in India.