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.

University of New South Wales researchers have identified four failure modes caused by damp heat in heterojunction solar panels with a glass-back sheet configuration. The failures could result in power losses ranging from 5% to 50%.

An international research group led by Longi Central R&D Institute has published a paper describing Longi’s heterojunction solar cell based on a full-size silicon wafer that made a sensation in November, as it beat the long-lasting efficiency record held by Japanese manufacturer Kaneka for years. The researchers attributed the cell efficiency improvement to the implementation of a p-type amorphous silicon hydrogenated layer together with a modified transparent conductive oxides contact, which they said greatly reduced the cell contact resistivity.

Local government in the Dutch province of North Brabant will deploy a 500-metre-long solar array on a bike track and test its performance over a five-year period. The PV system will be integrated into the asphalt top layer and will consist of 600 solar panels of an unspecified type.

An international research team has presented all possible system designs and applications for photovoltaic-thermal (PVT) technology. Their review includes conventional PV-T collectors, air-based systems, liquid-based installations, water-based collectors, refrigerant-based systems, heat-pipe-based technologies, dual air-water systems, building-integrated PVT arrays, and concentrated PVT collectors.

Mauritian researchers have developed a solar tracker prototype that increases current by around 37%. The device uses a simplified and mechanical tracking system.

Dutch scientists have reported higher degradation risk for n-type TOPCon cells with EVA encapsulant due to potential moisture degradation. Front-side metallisation makes n-type cells more vulnerable than p-type cells, according to damp heat tests.

Researchers in Hong Kong have designed an agrivoltaic system that uses blockchain tech and smart contracts to reduce uncertainties between PV system operators and grape farmers. The proposed system uses rainwater to clean solar panels and provide irrigation.

Dutch startup Airturb has developed a 500 W hybrid wind-solar power system featuring a vertical axis wind turbine and a solar base hosting four 30 W solar panels. The system can be used for rooftop or off-grid applications.

The China Academy of Metrology and Science has certified Jolywood’s 26.7% efficiency rating for an n-type tunnel oxide passivated contact (TOPCon) solar cell, which the company claims is a world record. In November 2022, it announced a 26.1% efficiency rating for a similar cell.