This study introduces a reinforcement learning (RL) framework using Proximal Policy Optimization (PPO) and Soft Actor-Critic (SAC) to optimize the cleaning schedules of photovoltaic panels in arid regions. Applied to a case study in Abu Dhabi, the PPO-based framework demonstrated up to 13% cost savings compared to simulation optimization methods by dynamically adjusting cleaning intervals based on environmental conditions. The research highlights the potential of RL in enhancing the efficiency and reducing the operational costs of solar power generation.
KAUST has launched a Center of Excellence (CoE) for Renewable Energy and Storage Technologies, chaired by Professor Husam Alshareef, to develop and deploy innovative renewable energy and storage technologies. The center will focus on homegrown technologies invented at KAUST and aims to attract investments, partnerships, and market interest for commercial adoption. Research will focus on prototyping and scaling technologies across six key themes including advanced photovoltaics and new battery chemistries. Why it matters: This initiative aligns with Saudi Vision 2030, supporting the Kingdom's climate goals and transition to sustainable energy while creating jobs and enhancing energy security.
KAUST and LONGi, a solar energy company, have signed an MoU to collaborate on solar energy innovation. The partnership aims to develop and deploy solar technologies, focusing on improving the efficiency of photovoltaic technologies. Joint projects will include testing PV module concepts, developing new materials, and optimizing performance, alongside talent development programs. Why it matters: This collaboration aligns with Saudi Vision 2030 and the Saudi Green Initiative, fostering sustainable energy solutions and local expertise in the region.
KAUST researchers have developed a perovskite/silicon tandem solar cell with a power conversion efficiency (PCE) of 33.2%, surpassing the previous record of 32.5% held by Helmholtz Zentrum Berlin (HZB). The tandem device was certified by the European Solar Test Installation (ESTI) and listed at the top of the NREL efficiency chart. The cell combines perovskite top cells for blue light absorption with silicon bottom cells for red light absorption. Why it matters: This breakthrough could accelerate the adoption of high-performance photovoltaic modules, which is critical for achieving global renewable energy goals.
KAUST researchers have achieved a breakthrough by passing the damp-heat test for perovskite solar cells (PSCs), a rigorous assessment of their ability to withstand prolonged exposure to high humidity and temperatures. The team engineered 2D-perovskite passivation layers that block moisture and enhance power conversion efficiencies. The successful test, which requires maintaining 95% of initial performance after 1,000 hours at 85% humidity and 85 degrees Celsius, marks a significant step toward commercialization. Why it matters: This advancement addresses a critical weakness of PSCs and brings the technology closer to competing with silicon solar cells in terms of stability and longevity, crucial for widespread adoption of renewable energy.
Researchers from KAUST and University of Toronto have created a two-sided perovskite/silicon tandem solar cell that exceeds the performance limits for tandem configurations. The bifacial design captures both direct sunlight and light reflected from the ground (albedo). Outdoor testing demonstrated efficiencies beyond commercial silicon solar panels. Why it matters: This innovation promises ultra-high power generation at affordable costs, potentially revolutionizing the photovoltaics market in the region and globally.
Jean M. J. Fréchet, retired KAUST senior vice president, has been awarded the King Faisal Prize in Chemistry for his pioneering work in dendrimers, photoresists, and organic photovoltaics. His work has contributed to advancements in biotherapeutics, organic electronics, materials, and microfluidics. Fréchet is the 10th most cited chemist globally, with over 900 publications and 200 patents. Why it matters: The recognition highlights KAUST's impact on global scientific advancement and underscores the importance of investing in basic research with broad applications.
A KAUST research team led by Prof. Osman Bakr developed a novel antisolvent vapor-assisted crystallization (AVC) method to grow high-quality, crack-free MAPbX3 perovskite single crystals at room temperature. The resulting crystals exceeded 100 mm3 in volume and exhibited exceptionally low trap-state density (approximately 10^9 – 10^10 cm-3). The crystal quality is comparable to high-quality single crystal silicon, but grown at much lower temperatures. Why it matters: This breakthrough allows for more accurate characterization of perovskite photovoltaic properties and can accelerate improvements in solar cell efficiency.