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Hybridising gravity energy storage with batteries, supercapacitors

Developed by Chinese researchers, the novel hybrid storage technology may achieve an efficiency of over 80% and be applied in distribution and transmission grids. The proposed combination is reportedly able to offer the advantages of gravity energy storage and power-based storage systems in a single solution.

First attempt to repair glass-damaged solar panels

A Dutch research group has used a series of techniques from the automotive industry to develop a novel methodology to repair glass in double-glass solar panels. Their experimental work represents the step towards transforming glass-damaged solar panels from waste into valuable products.

Foldable, textured silicon wafers for flexible heterojunction solar cells

An international research team in China has used Czochralski n-type c-Si wafers from China-based Sichuan Yongxiang to build textured wafers with a thickness ranging from 65 μm to 55 μm. They have used the wafers in heterojunction solar cells ton hit efficiencies close to those of devices cells based on conventional wafers.

Sungrow unveils power optimiser for rooftop PV systems

Sungrow’s new power optimiser has a rated input power of 600 W, a maximum efficiency rating of 99.4%, and a weighted efficiency of 98.8%. It can accommodate up to 30 modules per string.

Researchers assess degradation in PV systems older than 15 years

Scientists have used the US National Renewable Energy Laboratory’s (NREL) HOMER software to calculate the degradation of solar panels deployed in two rooftop PV systems operating in Germany since 2003. Their calculations focused on the energy productivity of the systems.

New model to assess levelised cost of hydrogen in PV-powered electrolysis

Scientists in Singapore have developed a methodology to calculate the levelised cost of hydrogen in green hydrogen facilities powered by photovoltaics, emphasising the need for a levelised cost of storage (LCOH) below USD 10/kg ($15/kg) to enable green hydrogen to compete with grey, blue, and orange hydrogen in the current technology landscape.

Perovskite solar cell design promises 31.09% efficiency

Chinese researchers have developed a solar cell using CsSnI3 perovskite, known for its unique phase transitions and near-IR emissions. By simulating the device with various electron transport layers (ETLs) and hole transport layers (HTLs), they determined that the optimal cell could be created using a titanium oxide (TiO2) ETL and a nickel(II) oxide (NiOx) HTL.

Qcells builds pilot line for perovskite-silicon tandem PV cells in South Korea

Qcells says it is building a pilot line for perovskite-silicon tandem solar cells that will start operations later this year in South Korea. It is working closely with its team in Germany, where it has already established another pilot line for tandem cells.

Sharp unveils 570 W TOPCon solar panel with 22.07% efficiency

Sharp’s new IEC61215- and IEC61730-certified solar panel offers a power conversion efficiency of 22.07% and a bifaciality of more than 80%. The operating temperature coefficient is -0.30% per C and its power tolerance is 5%.

Vietnam’s solar development moves to rooftops, net metering

The Vietnamese government has announced a USD 135 billion ($200 billion) energy strategy, with half of the country’s residential rooftops to be equipped with PV systems under a net-metering scheme. The nation also aims to become a power exporter by the end of the decade.

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