Scientists in Austria have developed a long-term energy storage system that uses regenerative braking to adjust the descent speed of sand in mine shafts and generate electricity.

The World Future Energy Summit showed that Middle Eastern solar markets are still driven by utility-scale PV, although the C&I sector shows signs of growth. Saudi Arabia, Egypt and the United Arab Emirates are the most promising markets for big solar projects, with huge pipelines under development, while Lebanon and Yemen show promise due to chronic energy shortages.

Radovan Kopecek, the co-founder and director of Germany’s ISC Konstanz, says interdigitated back contact (IBC) tech could account for half of the global market for solar modules by 2030. He says IBC will start to dominate once TopCON and HJT get stuck at certain efficiency limits, and he believes TOPCon will be the first victim.

New research highlights the crucial role of R&D in improving solar cell efficiency. The researchers discovered that it is theoretically possible to measure the promise of new solar cell technologies at any stage of development.

Sineng Electric has switched on a 400 MW/800 MWh storage facility in China’s Shandong province. The project features the company’s 3.15 MW turnkey battery stations.

US researchers have proposed the use of solar inverters in utility-scale solar assets to replace expensive voltage compensators, in order to provide voltage support at night. They said reactive power from PV inverters could be significantly cheaper and suggested the introduction of incentives to convince PV plant owners.

Shenzhen LiTime Technology’s new lithium iron phosphate battery system has a nominal voltage of 12.8 V and a capacity of 100 Ah. It comes with a five-year warranty and can purportedly operate for more than 4,000 cycles.

Chinese-Canadian PV manufacturing heavyweight Canadian Solar said it will begin mass production of 690 W TOPCon products in the first quarter of 2023. The modules will feature a cell efficiency of 25.0% and a bifaciality factor of more than 85%.

Researchers in South African have developed a new cleaning system for solar panels that uses a colour-sensing light-to-frequency converter to detect dirt. It can reportedly remove about 95% of the dust from a PV panel in less than a minute, at a lower cost than other systems.

Scientists in Egypt have created a self-cleaning, hydrophobic coating for solar panels that reportedly increases their efficiency by more than 30%. They used a coating solution based on polydimethylsiloxane (PDMS) and silicon dioxide (SiO2) nanocomposites, mixed with ethanol and isopropanol.