Technology and R&D

Electric vehicles will account for 65-75% of new three-wheeler (3W) sales by 2030. Intra-city transport buses will see 25-40% EV penetration and two-wheelers 25-35%. In four-wheeler passenger vehicles, the market will be driven by shared mobility, while just 10-15% of new car sales for personal mobility will be electric.

A new report published by the European Technology and Innovation Platform outlines the need for continuing research into the reliability of PV systems and components, and for the collection and sharing of performance data. The report recommends a holistic approach to reliability, going beyond current testing standards to identify new degradation mechanisms, and making use of sensors and drone imaging to monitor systems in the field to prevent and report on system failures.

New outdoor tests conducted at Saudi research center King Abdullah University of Science and Technology (KAUST) have shown that an increase in temperature affects the performance of a tandem perovskite/silicon solar cell not only because of voltage losses but also because of current mismatch between the two sub-cells.

Scientists in Europe took a very close look at the thin amorphous silicon layers used in heterojunction and tandem solar cells, building a full picture of the material’s structure at the nanoscale. Their findings could help scientists solve the long-standing mystery of light induced degradation.

Norwegian researchers have quantified the cooling effect of water in direct contact with floating PV arrays. They tested a computational fluid dynamics model to estimate U-values and used it on a 6 kW floating system deployed by Ocean Sun.

In a new paper published in the journal of Renewable and Sustainable Energy, renowned PV scientist Pierre Verlinden examines the solar industry’s trajectory towards the 70 TW of installed capacity that will be needed by 2050, as the best choice for meeting climate targets set out in the 2015 Paris agreement. Silver consumption and recycling, according to Verlinden, will be the biggest challenges in the years to come, as well as ensuring balanced growth and avoiding a major installation rush in the years close to 2050.

Researchers in Spain have analyzed the most important technologies for the development of intermediate-band solar cells (IBSC), a solar PV technology that was conceived to exceed the Shockley–Queisser limit. They identified four established technologies that are currently being adopted to manufacture IB materials and IBSC prototypes. Their future goal is to find the appropriate material to fabricate cheap and very efficient IBSCs.

Bluesky Energy has unveiled a storage system based on lithium titanate oxide cells. The new product is claimed to have a service life of 20,000 cycles and to cope well with extreme climatic conditions.

South African scientists have used a PV system to keep tomatoes in cold storage. They linked an air-cooling system and evaporative cooling tech to a 3.5 kW array and 12 batteries and tested it for 28 days in September.

Indian researchers have created a hybrid salp swarm algorithm to optimize MPPT tracking in PV systems under partial shading conditions. It is based on the swarming behavior of salps in the ocean.