Technology and R&D

The novel method uses the YOLOv8 framework, integrating an attention mechanism and a transformer model. It was tested on a dataset of 4,500 electroluminescence images against several other models and its results were up to 17.2% more accurate.

Solevi, a German electroluminescence (EL) inspection company, has launched drone-based electrical inspection services for rooftop solar installation in Germany with plans to automate further and expand geographically.

Researchers in the United Kingdom have presented a new heat pump system that may avoid reducing heat supply during defrosting operations. The proposed concept can reportedly execute defrosting operations while ensuring continuous heating by condensing the refrigerant in the frosted evaporator.

Researchers in China have found that a special type of hygroscopic hydrogel made of the polyacrylamide polymer and lithium chloride may reduce PV module temperature by up to 7.5%. They have also developed a mathematical model to analyze the operational mechanisms and factors responsible for the cooling performance.

King Abdullah University of Science and Technology researchers have told pv magazine that hydrogen storage pipelines and gravel could become a reality in lakes or water reservoirs in Europe, the United States, Japan, or China within 10 years. “The technology required to implement the proposed system is available, simple and cheap,” they said.

A European research consortium has produced a prototype solid-state battery using a new manufacturing process that reportedly achieves high energy densities and can be implemented on modern lithium-ion battery production lines.

Venice-based 9-tech has developed a thermomechanical process to recycle end-of-life PV panels, with early results showing an 87% recovery yield of materials such as silicon, copper, and silver.

A group including scientists from Insititute for Solar Energy Research Hamelin (ISFH) and German PV equipment manufacturer Centrotherm has developed a POLO back junction solar cell by using an industrial plasma enhanced chemical vapor deposition (PECVD) system with a low-frequency plasma source. The device achieved a slightly higher efficiency than a reference device fabricated via more expensive atomic layer deposition (ALD).

A research paper from scientists at Swansea University describes their tool for analyzing thermodynamic limits of organic semiconductor-based photovoltaics (OPVs). One of the findings was that semi-transparent solar PV deployed in greenhouses may deliver comparable performance to conventional crystalline silicon PV.

Scientists have proposed a new system that uses surplus PV energy in the spring and the autumn to charge up underground thermal energy storage for later use in the summer and winter. They have simulated it on a school facility in Seoul, with a few optional configurations for thermal storage. Power savings were up to 39%.