Department of Physics, GCWUF has organized one day International Seminar on ???Clean and Affordable Energy: Challenges and Solutions??? at April 29, 2024 in Jinnah Auditorium to exhibit Sustainable development goal SGD-7 (Affordable and Clean energy) under the directions of the Ministry of planning & Development and Quality Enhancement Cell GCWUF. The seminar on "Clean and Affordable Energy" convened to address the pressing need for transitioning towards sustainable energy sources while ensuring affordability and accessibility. The seminar aimed to explore the latest advancements, challenges, and future prospects related to Clean and Affordable Energy in solar cell technology. The seminar commenced with a keynote speech by international speaker Dr Babar Hussain (Xanadu Quantum Technologies, USA). He provided a comprehensive overview of recent advancements in the field of ZnO/Silicon solar cell. He presented that combining zinc oxide (ZnO) and silicon (Si) in solar cell design provides exciting opportunities to improve efficiency, reduce costs, and enhance device performance. Another focal point of the seminar was photovoltaic technologies, with a particular emphasis on solar cells and their efficiency enhancement strategies. 2nd International speaker Dr Sikandar Aftab (Sejong University, South Korea) gave comprehensive talk on the functional nanoelectronics and photovoltaic technologies. A significant portion of the talk was dedicated to exploring the integration of nanoelectronics and photovoltaic technologies for various applications. Our 1st national speaker Dr Hafeez Anwar (University of Agriculture, Faisalabad) delivered a keynote lecture on Dye-Sensitized Solar Cells. He presented that DSSCs provided valuable insights into a rapidly evolving field of solar energy research. By elucidating the working principles, fabrication techniques, advancements, and challenges associated with DSSCs, the talk contributed to a deeper understanding of this promising photovoltaic technology and its potential applications in diverse domains. 2nd national speaker Dr Sofia Akbar (GC University Faisalabad) presented on silicon based photovoltaic and PERC solar cells. With continued research and innovation, she showed that PERC solar cells hold the promise of further improving solar cell efficiency and driving the widespread adoption of solar energy as a clean and renewable power source. 3rd national speaker Dr Ijaz Ahmad Khan (GC University Faisalabad) delivered a lecture on electrode materials for Photoelectrochemical (PEC) Solar Devices whichprovided a thorough examination of the critical role of electrode materials in advancing the performance and efficiency of PEC solar cells. Our last speaker Mr Shamas Mushtaq highlighted the recent researches at semiconductor Physics and Renewable energy laboratory, Gc University Faisalabad. He delivered a comprehensive lecture on perovskite solar cell and showed its optimization performance by SCAPs-1D simulations. He presented recent advancements in perovskite solar cell technology, including improvements in power conversion efficiency (PCE), stability, and scalability. The seminar ended with sincere appreciation to speakers, and participants for their valuable contributions to the seminar, which served as a platform for meaningful discussions and knowledge exchange in the field of Clean and Affordable energy.